/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_SUM.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec1_product16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:39:56,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:39:56,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:39:56,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:39:56,585 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:39:56,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:39:56,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:39:56,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:39:56,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:39:56,592 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:39:56,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:39:56,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:39:56,597 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:39:56,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:39:56,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:39:56,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:39:56,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:39:56,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:39:56,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:39:56,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:39:56,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:39:56,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:39:56,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:39:56,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:39:56,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:39:56,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:39:56,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:39:56,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:39:56,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:39:56,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:39:56,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:39:56,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:39:56,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:39:56,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:39:56,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:39:56,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:39:56,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:39:56,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:39:56,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:39:56,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:39:56,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:39:56,636 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 05:39:56,668 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:39:56,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:39:56,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:39:56,669 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:39:56,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:39:56,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:39:56,671 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:39:56,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:39:56,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:39:56,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:39:56,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:39:56,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:39:56,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:39:56,672 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:39:56,672 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:39:56,672 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:39:56,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:39:56,673 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:39:56,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:39:56,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:39:56,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:39:56,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:39:56,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:39:56,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:39:56,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:39:56,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:39:56,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:39:56,674 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:39:56,674 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:39:56,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:39:56,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:39:56,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:39:56,675 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:39:56,675 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:39:56,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:39:56,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:39:56,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:39:56,979 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:39:56,980 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:39:56,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec1_product16.cil.c [2022-01-11 05:39:57,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be46634d6/bd503d6da9ed4e209770042c95d9bdb8/FLAGd550724f5 [2022-01-11 05:39:57,580 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:39:57,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product16.cil.c [2022-01-11 05:39:57,600 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be46634d6/bd503d6da9ed4e209770042c95d9bdb8/FLAGd550724f5 [2022-01-11 05:39:58,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be46634d6/bd503d6da9ed4e209770042c95d9bdb8 [2022-01-11 05:39:58,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:39:58,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:39:58,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:39:58,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:39:58,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:39:58,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:39:58" (1/1) ... [2022-01-11 05:39:58,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27958b84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:39:58, skipping insertion in model container [2022-01-11 05:39:58,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:39:58" (1/1) ... [2022-01-11 05:39:58,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:39:58,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:39:58,494 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/email_spec1_product16.cil.c[36116,36129] [2022-01-11 05:39:58,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:39:58,616 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 05:39:58,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:39:58,687 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/email_spec1_product16.cil.c[36116,36129] [2022-01-11 05:39:58,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:39:58,718 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:39:58,764 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/email_spec1_product16.cil.c[36116,36129] [2022-01-11 05:39:58,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:39:58,821 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:39:58,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:39:58 WrapperNode [2022-01-11 05:39:58,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:39:58,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:39:58,823 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:39:58,823 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:39:58,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:39:58" (1/1) ... [2022-01-11 05:39:58,878 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:39:58" (1/1) ... [2022-01-11 05:39:58,976 INFO L137 Inliner]: procedures = 127, calls = 196, calls flagged for inlining = 110, calls inlined = 145, statements flattened = 2157 [2022-01-11 05:39:58,977 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:39:58,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:39:58,978 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:39:58,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:39:58,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:39:58" (1/1) ... [2022-01-11 05:39:58,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:39:58" (1/1) ... [2022-01-11 05:39:58,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:39:58" (1/1) ... [2022-01-11 05:39:58,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:39:58" (1/1) ... [2022-01-11 05:39:59,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:39:58" (1/1) ... [2022-01-11 05:39:59,032 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:39:58" (1/1) ... [2022-01-11 05:39:59,037 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:39:58" (1/1) ... [2022-01-11 05:39:59,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:39:59,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:39:59,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:39:59,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:39:59,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:39:58" (1/1) ... [2022-01-11 05:39:59,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:39:59,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:39:59,125 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) [2022-01-11 05:39:59,151 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 [2022-01-11 05:39:59,165 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-11 05:39:59,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:39:59,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:39:59,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:39:59,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:39:59,376 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:39:59,377 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:40:00,583 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:40:00,600 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:40:00,600 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 05:40:00,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:40:00 BoogieIcfgContainer [2022-01-11 05:40:00,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:40:00,604 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:40:00,604 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:40:00,606 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:40:00,608 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:40:00" (1/1) ... [2022-01-11 05:40:00,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:40:00 BasicIcfg [2022-01-11 05:40:00,976 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:40:00,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:40:00,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:40:00,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:40:00,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:39:58" (1/4) ... [2022-01-11 05:40:00,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a29bc49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:40:00, skipping insertion in model container [2022-01-11 05:40:00,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:39:58" (2/4) ... [2022-01-11 05:40:00,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a29bc49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:40:00, skipping insertion in model container [2022-01-11 05:40:00,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:40:00" (3/4) ... [2022-01-11 05:40:00,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a29bc49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:40:00, skipping insertion in model container [2022-01-11 05:40:00,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:40:00" (4/4) ... [2022-01-11 05:40:00,982 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product16.cil.cTransformedIcfg [2022-01-11 05:40:00,986 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:40:00,986 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 05:40:01,039 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:40:01,045 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 [2022-01-11 05:40:01,045 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 05:40:01,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 490 states, 487 states have (on average 1.6858316221765914) internal successors, (821), 489 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:01,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-11 05:40:01,094 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:01,095 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] [2022-01-11 05:40:01,095 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:01,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:01,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1887767398, now seen corresponding path program 1 times [2022-01-11 05:40:01,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:01,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602461095] [2022-01-11 05:40:01,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:01,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:01,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:01,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602461095] [2022-01-11 05:40:01,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602461095] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:01,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:01,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:40:01,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353198561] [2022-01-11 05:40:01,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:01,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 05:40:01,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:01,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 05:40:01,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:40:01,572 INFO L87 Difference]: Start difference. First operand has 490 states, 487 states have (on average 1.6858316221765914) internal successors, (821), 489 states have internal predecessors, (821), 0 states have call successors, (0), 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 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:01,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:01,633 INFO L93 Difference]: Finished difference Result 719 states and 1182 transitions. [2022-01-11 05:40:01,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 05:40:01,635 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-11 05:40:01,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:01,653 INFO L225 Difference]: With dead ends: 719 [2022-01-11 05:40:01,653 INFO L226 Difference]: Without dead ends: 412 [2022-01-11 05:40:01,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:40:01,662 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:01,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:40:01,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-01-11 05:40:01,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2022-01-11 05:40:01,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 410 states have (on average 1.7) internal successors, (697), 411 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:01,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 697 transitions. [2022-01-11 05:40:01,735 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 697 transitions. Word has length 48 [2022-01-11 05:40:01,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:01,736 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 697 transitions. [2022-01-11 05:40:01,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:01,738 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 697 transitions. [2022-01-11 05:40:01,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-11 05:40:01,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:01,741 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] [2022-01-11 05:40:01,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:40:01,741 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:01,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:01,743 INFO L85 PathProgramCache]: Analyzing trace with hash 758039776, now seen corresponding path program 1 times [2022-01-11 05:40:01,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:01,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975543318] [2022-01-11 05:40:01,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:01,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:01,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:01,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:01,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975543318] [2022-01-11 05:40:01,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975543318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:01,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:01,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:40:01,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631284405] [2022-01-11 05:40:01,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:01,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:40:01,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:01,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:40:01,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:40:01,920 INFO L87 Difference]: Start difference. First operand 412 states and 697 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:01,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:01,953 INFO L93 Difference]: Finished difference Result 519 states and 863 transitions. [2022-01-11 05:40:01,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:40:01,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-01-11 05:40:01,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:01,956 INFO L225 Difference]: With dead ends: 519 [2022-01-11 05:40:01,956 INFO L226 Difference]: Without dead ends: 406 [2022-01-11 05:40:01,957 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 [2022-01-11 05:40:01,958 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 477 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:01,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 851 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:40:01,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-01-11 05:40:02,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2022-01-11 05:40:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.6987654320987655) internal successors, (688), 405 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:02,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 688 transitions. [2022-01-11 05:40:02,010 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 688 transitions. Word has length 49 [2022-01-11 05:40:02,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:02,011 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 688 transitions. [2022-01-11 05:40:02,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:02,011 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 688 transitions. [2022-01-11 05:40:02,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 05:40:02,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:02,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:02,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:40:02,013 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:02,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:02,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1949678099, now seen corresponding path program 1 times [2022-01-11 05:40:02,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:02,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055866778] [2022-01-11 05:40:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:02,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:02,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:02,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:02,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055866778] [2022-01-11 05:40:02,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055866778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:02,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:02,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:40:02,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584913027] [2022-01-11 05:40:02,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:02,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:40:02,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:02,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:40:02,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:40:02,175 INFO L87 Difference]: Start difference. First operand 406 states and 688 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:02,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:02,240 INFO L93 Difference]: Finished difference Result 793 states and 1348 transitions. [2022-01-11 05:40:02,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:40:02,241 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-11 05:40:02,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:02,243 INFO L225 Difference]: With dead ends: 793 [2022-01-11 05:40:02,244 INFO L226 Difference]: Without dead ends: 406 [2022-01-11 05:40:02,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:40:02,249 INFO L933 BasicCegarLoop]: 669 mSDtfsCounter, 663 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:02,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [663 Valid, 682 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:40:02,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-01-11 05:40:02,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2022-01-11 05:40:02,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.693827160493827) internal successors, (686), 405 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:02,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 686 transitions. [2022-01-11 05:40:02,273 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 686 transitions. Word has length 85 [2022-01-11 05:40:02,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:02,275 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 686 transitions. [2022-01-11 05:40:02,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:02,275 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 686 transitions. [2022-01-11 05:40:02,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-11 05:40:02,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:02,280 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] [2022-01-11 05:40:02,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 05:40:02,280 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:02,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:02,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2068149229, now seen corresponding path program 1 times [2022-01-11 05:40:02,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:02,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053380250] [2022-01-11 05:40:02,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:02,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:02,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:02,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053380250] [2022-01-11 05:40:02,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053380250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:02,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:02,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:40:02,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859481593] [2022-01-11 05:40:02,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:02,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:40:02,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:02,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:40:02,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:40:02,438 INFO L87 Difference]: Start difference. First operand 406 states and 686 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:02,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:02,676 INFO L93 Difference]: Finished difference Result 1898 states and 3226 transitions. [2022-01-11 05:40:02,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:40:02,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-01-11 05:40:02,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:02,685 INFO L225 Difference]: With dead ends: 1898 [2022-01-11 05:40:02,685 INFO L226 Difference]: Without dead ends: 1516 [2022-01-11 05:40:02,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:40:02,691 INFO L933 BasicCegarLoop]: 1295 mSDtfsCounter, 3213 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3213 SdHoareTripleChecker+Valid, 3225 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:02,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3213 Valid, 3225 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:40:02,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2022-01-11 05:40:02,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 406. [2022-01-11 05:40:02,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.691358024691358) internal successors, (685), 405 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:02,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 685 transitions. [2022-01-11 05:40:02,723 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 685 transitions. Word has length 87 [2022-01-11 05:40:02,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:02,723 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 685 transitions. [2022-01-11 05:40:02,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:02,723 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 685 transitions. [2022-01-11 05:40:02,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-11 05:40:02,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:02,725 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] [2022-01-11 05:40:02,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 05:40:02,726 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:02,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:02,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1480667097, now seen corresponding path program 1 times [2022-01-11 05:40:02,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:02,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060178818] [2022-01-11 05:40:02,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:02,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:02,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:02,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:02,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060178818] [2022-01-11 05:40:02,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060178818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:02,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:02,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:40:02,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421527822] [2022-01-11 05:40:02,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:02,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:40:02,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:02,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:40:02,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:40:02,868 INFO L87 Difference]: Start difference. First operand 406 states and 685 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:02,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:02,926 INFO L93 Difference]: Finished difference Result 797 states and 1348 transitions. [2022-01-11 05:40:02,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:40:02,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-11 05:40:02,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:02,929 INFO L225 Difference]: With dead ends: 797 [2022-01-11 05:40:02,929 INFO L226 Difference]: Without dead ends: 420 [2022-01-11 05:40:02,930 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 [2022-01-11 05:40:02,931 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 664 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:02,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 721 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:40:02,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-01-11 05:40:02,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 406. [2022-01-11 05:40:02,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.6888888888888889) internal successors, (684), 405 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:02,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 684 transitions. [2022-01-11 05:40:02,963 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 684 transitions. Word has length 88 [2022-01-11 05:40:02,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:02,967 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 684 transitions. [2022-01-11 05:40:02,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:02,968 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 684 transitions. [2022-01-11 05:40:02,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-11 05:40:02,973 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:02,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:02,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 05:40:02,973 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:02,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:02,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1917038194, now seen corresponding path program 1 times [2022-01-11 05:40:02,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:02,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369000423] [2022-01-11 05:40:02,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:02,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:03,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:03,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369000423] [2022-01-11 05:40:03,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369000423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:03,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:03,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:40:03,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947962762] [2022-01-11 05:40:03,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:03,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:40:03,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:03,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:40:03,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:40:03,106 INFO L87 Difference]: Start difference. First operand 406 states and 684 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 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) [2022-01-11 05:40:03,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:03,300 INFO L93 Difference]: Finished difference Result 1152 states and 1952 transitions. [2022-01-11 05:40:03,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:40:03,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 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 [2022-01-11 05:40:03,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:03,305 INFO L225 Difference]: With dead ends: 1152 [2022-01-11 05:40:03,305 INFO L226 Difference]: Without dead ends: 780 [2022-01-11 05:40:03,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:40:03,307 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 3136 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3136 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:03,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3136 Valid, 1400 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:40:03,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-01-11 05:40:03,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 406. [2022-01-11 05:40:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.6839506172839507) internal successors, (682), 405 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:03,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 682 transitions. [2022-01-11 05:40:03,349 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 682 transitions. Word has length 89 [2022-01-11 05:40:03,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:03,351 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 682 transitions. [2022-01-11 05:40:03,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 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) [2022-01-11 05:40:03,352 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 682 transitions. [2022-01-11 05:40:03,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-11 05:40:03,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:03,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:03,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 05:40:03,353 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:03,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:03,354 INFO L85 PathProgramCache]: Analyzing trace with hash -311095829, now seen corresponding path program 1 times [2022-01-11 05:40:03,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:03,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587461081] [2022-01-11 05:40:03,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:03,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:03,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:03,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:03,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587461081] [2022-01-11 05:40:03,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587461081] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:03,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:03,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:40:03,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103525362] [2022-01-11 05:40:03,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:03,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:40:03,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:03,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:40:03,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:40:03,524 INFO L87 Difference]: Start difference. First operand 406 states and 682 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:03,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:03,804 INFO L93 Difference]: Finished difference Result 1783 states and 2988 transitions. [2022-01-11 05:40:03,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:40:03,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-01-11 05:40:03,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:03,813 INFO L225 Difference]: With dead ends: 1783 [2022-01-11 05:40:03,813 INFO L226 Difference]: Without dead ends: 1702 [2022-01-11 05:40:03,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 05:40:03,815 INFO L933 BasicCegarLoop]: 790 mSDtfsCounter, 3200 mSDsluCounter, 3345 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3200 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:03,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3200 Valid, 4135 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:40:03,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2022-01-11 05:40:03,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 698. [2022-01-11 05:40:03,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 1.7044476327116211) internal successors, (1188), 697 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:03,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1188 transitions. [2022-01-11 05:40:03,917 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1188 transitions. Word has length 91 [2022-01-11 05:40:03,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:03,918 INFO L470 AbstractCegarLoop]: Abstraction has 698 states and 1188 transitions. [2022-01-11 05:40:03,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:03,918 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1188 transitions. [2022-01-11 05:40:03,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-11 05:40:03,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:03,920 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] [2022-01-11 05:40:03,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 05:40:03,921 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:03,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:03,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1210202387, now seen corresponding path program 1 times [2022-01-11 05:40:03,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:03,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404084105] [2022-01-11 05:40:03,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:03,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:04,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:04,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404084105] [2022-01-11 05:40:04,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404084105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:04,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:04,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:40:04,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189664778] [2022-01-11 05:40:04,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:04,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:40:04,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:04,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:40:04,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:40:04,073 INFO L87 Difference]: Start difference. First operand 698 states and 1188 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 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) [2022-01-11 05:40:04,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:04,412 INFO L93 Difference]: Finished difference Result 2851 states and 4874 transitions. [2022-01-11 05:40:04,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:40:04,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 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 [2022-01-11 05:40:04,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:04,425 INFO L225 Difference]: With dead ends: 2851 [2022-01-11 05:40:04,425 INFO L226 Difference]: Without dead ends: 2770 [2022-01-11 05:40:04,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 05:40:04,430 INFO L933 BasicCegarLoop]: 822 mSDtfsCounter, 3071 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3071 SdHoareTripleChecker+Valid, 3607 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:04,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3071 Valid, 3607 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:40:04,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2022-01-11 05:40:04,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 1259. [2022-01-11 05:40:04,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1258 states have (on average 1.724960254372019) internal successors, (2170), 1258 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:04,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 2170 transitions. [2022-01-11 05:40:04,552 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 2170 transitions. Word has length 92 [2022-01-11 05:40:04,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:04,553 INFO L470 AbstractCegarLoop]: Abstraction has 1259 states and 2170 transitions. [2022-01-11 05:40:04,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 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) [2022-01-11 05:40:04,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 2170 transitions. [2022-01-11 05:40:04,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-11 05:40:04,556 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:04,556 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] [2022-01-11 05:40:04,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 05:40:04,556 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:04,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:04,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1323923987, now seen corresponding path program 1 times [2022-01-11 05:40:04,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:04,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693060850] [2022-01-11 05:40:04,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:04,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:04,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:04,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693060850] [2022-01-11 05:40:04,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693060850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:04,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:04,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:40:04,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917199114] [2022-01-11 05:40:04,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:04,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:40:04,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:04,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:40:04,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:40:04,683 INFO L87 Difference]: Start difference. First operand 1259 states and 2170 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 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) [2022-01-11 05:40:04,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:04,948 INFO L93 Difference]: Finished difference Result 3589 states and 6250 transitions. [2022-01-11 05:40:04,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:40:04,949 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 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 [2022-01-11 05:40:04,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:04,959 INFO L225 Difference]: With dead ends: 3589 [2022-01-11 05:40:04,959 INFO L226 Difference]: Without dead ends: 2380 [2022-01-11 05:40:04,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:40:04,965 INFO L933 BasicCegarLoop]: 1267 mSDtfsCounter, 1983 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:04,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1983 Valid, 1902 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:40:04,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2022-01-11 05:40:05,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 1259. [2022-01-11 05:40:05,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1258 states have (on average 1.7233704292527823) internal successors, (2168), 1258 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:05,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 2168 transitions. [2022-01-11 05:40:05,071 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 2168 transitions. Word has length 92 [2022-01-11 05:40:05,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:05,072 INFO L470 AbstractCegarLoop]: Abstraction has 1259 states and 2168 transitions. [2022-01-11 05:40:05,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 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) [2022-01-11 05:40:05,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 2168 transitions. [2022-01-11 05:40:05,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-11 05:40:05,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:05,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:05,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 05:40:05,075 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:05,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:05,076 INFO L85 PathProgramCache]: Analyzing trace with hash 130096836, now seen corresponding path program 1 times [2022-01-11 05:40:05,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:05,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672053164] [2022-01-11 05:40:05,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:05,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:05,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:05,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:05,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672053164] [2022-01-11 05:40:05,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672053164] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:05,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:05,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:40:05,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90861868] [2022-01-11 05:40:05,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:05,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:40:05,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:05,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:40:05,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:40:05,168 INFO L87 Difference]: Start difference. First operand 1259 states and 2168 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:05,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:05,482 INFO L93 Difference]: Finished difference Result 3587 states and 6242 transitions. [2022-01-11 05:40:05,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:40:05,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-01-11 05:40:05,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:05,498 INFO L225 Difference]: With dead ends: 3587 [2022-01-11 05:40:05,498 INFO L226 Difference]: Without dead ends: 2388 [2022-01-11 05:40:05,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:40:05,501 INFO L933 BasicCegarLoop]: 1272 mSDtfsCounter, 1968 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:05,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1968 Valid, 1934 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:40:05,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2022-01-11 05:40:05,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 1259. [2022-01-11 05:40:05,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1258 states have (on average 1.7217806041335453) internal successors, (2166), 1258 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:05,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 2166 transitions. [2022-01-11 05:40:05,619 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 2166 transitions. Word has length 93 [2022-01-11 05:40:05,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:05,619 INFO L470 AbstractCegarLoop]: Abstraction has 1259 states and 2166 transitions. [2022-01-11 05:40:05,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:05,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 2166 transitions. [2022-01-11 05:40:05,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-11 05:40:05,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:05,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:05,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 05:40:05,623 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:05,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:05,623 INFO L85 PathProgramCache]: Analyzing trace with hash 997149061, now seen corresponding path program 1 times [2022-01-11 05:40:05,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:05,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108199774] [2022-01-11 05:40:05,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:05,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:05,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:05,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:05,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108199774] [2022-01-11 05:40:05,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108199774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:05,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:05,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:40:05,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198938839] [2022-01-11 05:40:05,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:05,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:40:05,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:05,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:40:05,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:40:05,798 INFO L87 Difference]: Start difference. First operand 1259 states and 2166 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:06,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:06,599 INFO L93 Difference]: Finished difference Result 3507 states and 5897 transitions. [2022-01-11 05:40:06,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 05:40:06,600 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-01-11 05:40:06,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:06,613 INFO L225 Difference]: With dead ends: 3507 [2022-01-11 05:40:06,613 INFO L226 Difference]: Without dead ends: 3302 [2022-01-11 05:40:06,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-11 05:40:06,615 INFO L933 BasicCegarLoop]: 852 mSDtfsCounter, 3658 mSDsluCounter, 5608 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3658 SdHoareTripleChecker+Valid, 6460 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:06,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3658 Valid, 6460 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:40:06,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3302 states. [2022-01-11 05:40:06,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3302 to 2409. [2022-01-11 05:40:06,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 2408 states have (on average 1.7379568106312293) internal successors, (4185), 2408 states have internal predecessors, (4185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:06,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 4185 transitions. [2022-01-11 05:40:06,851 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 4185 transitions. Word has length 93 [2022-01-11 05:40:06,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:06,851 INFO L470 AbstractCegarLoop]: Abstraction has 2409 states and 4185 transitions. [2022-01-11 05:40:06,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:06,852 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 4185 transitions. [2022-01-11 05:40:06,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-11 05:40:06,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:06,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:06,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 05:40:06,858 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:06,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:06,858 INFO L85 PathProgramCache]: Analyzing trace with hash 702430218, now seen corresponding path program 1 times [2022-01-11 05:40:06,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:06,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568981812] [2022-01-11 05:40:06,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:06,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:06,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:06,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:06,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568981812] [2022-01-11 05:40:06,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568981812] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:06,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:06,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:40:06,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123264926] [2022-01-11 05:40:06,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:06,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:40:06,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:06,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:40:06,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:40:06,946 INFO L87 Difference]: Start difference. First operand 2409 states and 4185 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:07,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:07,176 INFO L93 Difference]: Finished difference Result 2755 states and 4729 transitions. [2022-01-11 05:40:07,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:40:07,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-01-11 05:40:07,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:07,188 INFO L225 Difference]: With dead ends: 2755 [2022-01-11 05:40:07,188 INFO L226 Difference]: Without dead ends: 2494 [2022-01-11 05:40:07,190 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 [2022-01-11 05:40:07,191 INFO L933 BasicCegarLoop]: 673 mSDtfsCounter, 556 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:07,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 1676 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:40:07,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2022-01-11 05:40:07,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 2409. [2022-01-11 05:40:07,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 2408 states have (on average 1.736295681063123) internal successors, (4181), 2408 states have internal predecessors, (4181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:07,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 4181 transitions. [2022-01-11 05:40:07,446 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 4181 transitions. Word has length 94 [2022-01-11 05:40:07,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:07,447 INFO L470 AbstractCegarLoop]: Abstraction has 2409 states and 4181 transitions. [2022-01-11 05:40:07,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:07,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 4181 transitions. [2022-01-11 05:40:07,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-11 05:40:07,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:07,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:07,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 05:40:07,455 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:07,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:07,455 INFO L85 PathProgramCache]: Analyzing trace with hash 722767593, now seen corresponding path program 1 times [2022-01-11 05:40:07,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:07,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400735085] [2022-01-11 05:40:07,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:07,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:07,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:07,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:07,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400735085] [2022-01-11 05:40:07,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400735085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:07,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:07,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:40:07,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827589007] [2022-01-11 05:40:07,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:07,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:40:07,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:07,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:40:07,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:40:07,586 INFO L87 Difference]: Start difference. First operand 2409 states and 4181 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:08,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:08,104 INFO L93 Difference]: Finished difference Result 3811 states and 6369 transitions. [2022-01-11 05:40:08,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:40:08,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-01-11 05:40:08,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:08,130 INFO L225 Difference]: With dead ends: 3811 [2022-01-11 05:40:08,131 INFO L226 Difference]: Without dead ends: 3638 [2022-01-11 05:40:08,132 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 [2022-01-11 05:40:08,132 INFO L933 BasicCegarLoop]: 1022 mSDtfsCounter, 1578 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 3538 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:08,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1578 Valid, 3538 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:40:08,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3638 states. [2022-01-11 05:40:08,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3638 to 2561. [2022-01-11 05:40:08,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2561 states, 2560 states have (on average 1.730078125) internal successors, (4429), 2560 states have internal predecessors, (4429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:08,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2561 states to 2561 states and 4429 transitions. [2022-01-11 05:40:08,398 INFO L78 Accepts]: Start accepts. Automaton has 2561 states and 4429 transitions. Word has length 94 [2022-01-11 05:40:08,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:08,399 INFO L470 AbstractCegarLoop]: Abstraction has 2561 states and 4429 transitions. [2022-01-11 05:40:08,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:08,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2561 states and 4429 transitions. [2022-01-11 05:40:08,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-11 05:40:08,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:08,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:08,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 05:40:08,404 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:08,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:08,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1298835105, now seen corresponding path program 1 times [2022-01-11 05:40:08,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:08,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713334231] [2022-01-11 05:40:08,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:08,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:08,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:08,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:08,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713334231] [2022-01-11 05:40:08,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713334231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:08,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:08,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:40:08,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816741731] [2022-01-11 05:40:08,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:08,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 05:40:08,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:08,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 05:40:08,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:40:08,539 INFO L87 Difference]: Start difference. First operand 2561 states and 4429 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:09,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:09,101 INFO L93 Difference]: Finished difference Result 3736 states and 6241 transitions. [2022-01-11 05:40:09,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 05:40:09,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-01-11 05:40:09,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:09,113 INFO L225 Difference]: With dead ends: 3736 [2022-01-11 05:40:09,113 INFO L226 Difference]: Without dead ends: 3617 [2022-01-11 05:40:09,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-01-11 05:40:09,115 INFO L933 BasicCegarLoop]: 1214 mSDtfsCounter, 1792 mSDsluCounter, 4716 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 5930 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:09,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1792 Valid, 5930 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:40:09,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3617 states. [2022-01-11 05:40:09,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3617 to 2611. [2022-01-11 05:40:09,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2610 states have (on average 1.7260536398467432) internal successors, (4505), 2610 states have internal predecessors, (4505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 4505 transitions. [2022-01-11 05:40:09,389 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 4505 transitions. Word has length 94 [2022-01-11 05:40:09,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:09,389 INFO L470 AbstractCegarLoop]: Abstraction has 2611 states and 4505 transitions. [2022-01-11 05:40:09,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 4505 transitions. [2022-01-11 05:40:09,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-11 05:40:09,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:09,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:09,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 05:40:09,395 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:09,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:09,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1945310738, now seen corresponding path program 1 times [2022-01-11 05:40:09,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:09,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119586417] [2022-01-11 05:40:09,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:09,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:09,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:09,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:09,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:09,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119586417] [2022-01-11 05:40:09,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119586417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:09,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:09,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:40:09,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179850963] [2022-01-11 05:40:09,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:09,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:40:09,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:09,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:40:09,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:40:09,525 INFO L87 Difference]: Start difference. First operand 2611 states and 4505 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:10,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:10,175 INFO L93 Difference]: Finished difference Result 5461 states and 9163 transitions. [2022-01-11 05:40:10,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 05:40:10,176 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-01-11 05:40:10,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:10,187 INFO L225 Difference]: With dead ends: 5461 [2022-01-11 05:40:10,188 INFO L226 Difference]: Without dead ends: 5024 [2022-01-11 05:40:10,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:40:10,190 INFO L933 BasicCegarLoop]: 797 mSDtfsCounter, 1556 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:10,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1556 Valid, 2380 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:40:10,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5024 states. [2022-01-11 05:40:10,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5024 to 4055. [2022-01-11 05:40:10,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4055 states, 4054 states have (on average 1.7215096201282685) internal successors, (6979), 4054 states have internal predecessors, (6979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:10,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4055 states to 4055 states and 6979 transitions. [2022-01-11 05:40:10,528 INFO L78 Accepts]: Start accepts. Automaton has 4055 states and 6979 transitions. Word has length 95 [2022-01-11 05:40:10,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:10,528 INFO L470 AbstractCegarLoop]: Abstraction has 4055 states and 6979 transitions. [2022-01-11 05:40:10,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:10,528 INFO L276 IsEmpty]: Start isEmpty. Operand 4055 states and 6979 transitions. [2022-01-11 05:40:10,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-11 05:40:10,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:10,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:10,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 05:40:10,538 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:10,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:10,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1105523152, now seen corresponding path program 1 times [2022-01-11 05:40:10,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:10,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838807354] [2022-01-11 05:40:10,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:10,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:10,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:10,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:10,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:10,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838807354] [2022-01-11 05:40:10,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838807354] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:10,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:10,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-11 05:40:10,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944617686] [2022-01-11 05:40:10,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:10,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 05:40:10,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:10,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 05:40:10,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-11 05:40:10,714 INFO L87 Difference]: Start difference. First operand 4055 states and 6979 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:12,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:12,017 INFO L93 Difference]: Finished difference Result 6246 states and 10229 transitions. [2022-01-11 05:40:12,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-11 05:40:12,018 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-01-11 05:40:12,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:12,031 INFO L225 Difference]: With dead ends: 6246 [2022-01-11 05:40:12,031 INFO L226 Difference]: Without dead ends: 6041 [2022-01-11 05:40:12,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=260, Invalid=610, Unknown=0, NotChecked=0, Total=870 [2022-01-11 05:40:12,034 INFO L933 BasicCegarLoop]: 728 mSDtfsCounter, 4395 mSDsluCounter, 5336 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4395 SdHoareTripleChecker+Valid, 6064 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:12,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4395 Valid, 6064 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:40:12,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6041 states. [2022-01-11 05:40:12,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6041 to 4163. [2022-01-11 05:40:12,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4163 states, 4162 states have (on average 1.717203267659779) internal successors, (7147), 4162 states have internal predecessors, (7147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:12,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4163 states to 4163 states and 7147 transitions. [2022-01-11 05:40:12,376 INFO L78 Accepts]: Start accepts. Automaton has 4163 states and 7147 transitions. Word has length 95 [2022-01-11 05:40:12,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:12,377 INFO L470 AbstractCegarLoop]: Abstraction has 4163 states and 7147 transitions. [2022-01-11 05:40:12,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:12,377 INFO L276 IsEmpty]: Start isEmpty. Operand 4163 states and 7147 transitions. [2022-01-11 05:40:12,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-11 05:40:12,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:12,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:12,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 05:40:12,388 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:12,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:12,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1425138421, now seen corresponding path program 1 times [2022-01-11 05:40:12,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:12,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589296768] [2022-01-11 05:40:12,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:12,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:12,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:12,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589296768] [2022-01-11 05:40:12,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589296768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:12,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:12,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:40:12,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786836364] [2022-01-11 05:40:12,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:12,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:40:12,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:12,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:40:12,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:40:12,487 INFO L87 Difference]: Start difference. First operand 4163 states and 7147 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:13,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:13,268 INFO L93 Difference]: Finished difference Result 6307 states and 10335 transitions. [2022-01-11 05:40:13,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:40:13,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-01-11 05:40:13,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:13,281 INFO L225 Difference]: With dead ends: 6307 [2022-01-11 05:40:13,282 INFO L226 Difference]: Without dead ends: 5990 [2022-01-11 05:40:13,284 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 [2022-01-11 05:40:13,284 INFO L933 BasicCegarLoop]: 990 mSDtfsCounter, 1232 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:13,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1232 Valid, 2841 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:40:13,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2022-01-11 05:40:13,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 3893. [2022-01-11 05:40:13,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3893 states, 3892 states have (on average 1.7204522096608428) internal successors, (6696), 3892 states have internal predecessors, (6696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:13,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3893 states to 3893 states and 6696 transitions. [2022-01-11 05:40:13,645 INFO L78 Accepts]: Start accepts. Automaton has 3893 states and 6696 transitions. Word has length 95 [2022-01-11 05:40:13,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:13,646 INFO L470 AbstractCegarLoop]: Abstraction has 3893 states and 6696 transitions. [2022-01-11 05:40:13,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:13,646 INFO L276 IsEmpty]: Start isEmpty. Operand 3893 states and 6696 transitions. [2022-01-11 05:40:13,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-11 05:40:13,653 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:13,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:13,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 05:40:13,654 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:13,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:13,654 INFO L85 PathProgramCache]: Analyzing trace with hash -273562897, now seen corresponding path program 1 times [2022-01-11 05:40:13,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:13,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570306297] [2022-01-11 05:40:13,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:13,655 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:13,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:13,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:13,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:13,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570306297] [2022-01-11 05:40:13,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570306297] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:13,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:13,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:40:13,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311262287] [2022-01-11 05:40:13,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:13,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 05:40:13,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:13,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 05:40:13,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:40:13,778 INFO L87 Difference]: Start difference. First operand 3893 states and 6696 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:14,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:14,316 INFO L93 Difference]: Finished difference Result 4929 states and 8301 transitions. [2022-01-11 05:40:14,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 05:40:14,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2022-01-11 05:40:14,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:14,324 INFO L225 Difference]: With dead ends: 4929 [2022-01-11 05:40:14,325 INFO L226 Difference]: Without dead ends: 3928 [2022-01-11 05:40:14,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-01-11 05:40:14,328 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 1461 mSDsluCounter, 2952 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 3612 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:14,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1461 Valid, 3612 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:40:14,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2022-01-11 05:40:14,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 3783. [2022-01-11 05:40:14,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3783 states, 3782 states have (on average 1.721311475409836) internal successors, (6510), 3782 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:14,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3783 states to 3783 states and 6510 transitions. [2022-01-11 05:40:14,679 INFO L78 Accepts]: Start accepts. Automaton has 3783 states and 6510 transitions. Word has length 95 [2022-01-11 05:40:14,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:14,679 INFO L470 AbstractCegarLoop]: Abstraction has 3783 states and 6510 transitions. [2022-01-11 05:40:14,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:14,679 INFO L276 IsEmpty]: Start isEmpty. Operand 3783 states and 6510 transitions. [2022-01-11 05:40:14,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-11 05:40:14,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:14,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:14,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 05:40:14,685 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:14,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:14,685 INFO L85 PathProgramCache]: Analyzing trace with hash -933067265, now seen corresponding path program 1 times [2022-01-11 05:40:14,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:14,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816823224] [2022-01-11 05:40:14,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:14,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:14,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:14,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:14,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816823224] [2022-01-11 05:40:14,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816823224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:14,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:14,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:40:14,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588098262] [2022-01-11 05:40:14,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:14,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:40:14,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:14,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:40:14,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:40:14,791 INFO L87 Difference]: Start difference. First operand 3783 states and 6510 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:15,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:15,136 INFO L93 Difference]: Finished difference Result 3872 states and 6629 transitions. [2022-01-11 05:40:15,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:40:15,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-01-11 05:40:15,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:15,143 INFO L225 Difference]: With dead ends: 3872 [2022-01-11 05:40:15,143 INFO L226 Difference]: Without dead ends: 3783 [2022-01-11 05:40:15,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:40:15,145 INFO L933 BasicCegarLoop]: 673 mSDtfsCounter, 539 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:15,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 2085 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:40:15,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2022-01-11 05:40:15,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3783. [2022-01-11 05:40:15,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3783 states, 3782 states have (on average 1.7202538339502909) internal successors, (6506), 3782 states have internal predecessors, (6506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:15,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3783 states to 3783 states and 6506 transitions. [2022-01-11 05:40:15,461 INFO L78 Accepts]: Start accepts. Automaton has 3783 states and 6506 transitions. Word has length 96 [2022-01-11 05:40:15,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:15,462 INFO L470 AbstractCegarLoop]: Abstraction has 3783 states and 6506 transitions. [2022-01-11 05:40:15,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:15,462 INFO L276 IsEmpty]: Start isEmpty. Operand 3783 states and 6506 transitions. [2022-01-11 05:40:15,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-11 05:40:15,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:15,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:15,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 05:40:15,469 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:15,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:15,470 INFO L85 PathProgramCache]: Analyzing trace with hash 532173002, now seen corresponding path program 1 times [2022-01-11 05:40:15,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:15,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414583046] [2022-01-11 05:40:15,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:15,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:15,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:15,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:15,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414583046] [2022-01-11 05:40:15,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414583046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:15,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:15,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:40:15,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051083224] [2022-01-11 05:40:15,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:15,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:40:15,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:15,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:40:15,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:40:15,657 INFO L87 Difference]: Start difference. First operand 3783 states and 6506 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:16,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:16,347 INFO L93 Difference]: Finished difference Result 7689 states and 13203 transitions. [2022-01-11 05:40:16,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:40:16,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-11 05:40:16,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:16,360 INFO L225 Difference]: With dead ends: 7689 [2022-01-11 05:40:16,360 INFO L226 Difference]: Without dead ends: 7084 [2022-01-11 05:40:16,362 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 [2022-01-11 05:40:16,364 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 610 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 2637 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:16,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [610 Valid, 2637 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:40:16,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7084 states. [2022-01-11 05:40:16,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7084 to 6876. [2022-01-11 05:40:16,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6876 states, 6875 states have (on average 1.739781818181818) internal successors, (11961), 6875 states have internal predecessors, (11961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6876 states to 6876 states and 11961 transitions. [2022-01-11 05:40:16,845 INFO L78 Accepts]: Start accepts. Automaton has 6876 states and 11961 transitions. Word has length 115 [2022-01-11 05:40:16,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:16,845 INFO L470 AbstractCegarLoop]: Abstraction has 6876 states and 11961 transitions. [2022-01-11 05:40:16,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:16,845 INFO L276 IsEmpty]: Start isEmpty. Operand 6876 states and 11961 transitions. [2022-01-11 05:40:16,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-11 05:40:16,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:16,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:16,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 05:40:16,860 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:16,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:16,861 INFO L85 PathProgramCache]: Analyzing trace with hash -2021234913, now seen corresponding path program 1 times [2022-01-11 05:40:16,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:16,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601209719] [2022-01-11 05:40:16,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:16,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:17,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:17,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601209719] [2022-01-11 05:40:17,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601209719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:17,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:17,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-11 05:40:17,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440370333] [2022-01-11 05:40:17,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:17,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 05:40:17,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:17,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 05:40:17,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-11 05:40:17,021 INFO L87 Difference]: Start difference. First operand 6876 states and 11961 transitions. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:17,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:17,894 INFO L93 Difference]: Finished difference Result 7366 states and 12656 transitions. [2022-01-11 05:40:17,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-11 05:40:17,894 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-01-11 05:40:17,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:17,905 INFO L225 Difference]: With dead ends: 7366 [2022-01-11 05:40:17,905 INFO L226 Difference]: Without dead ends: 6531 [2022-01-11 05:40:17,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2022-01-11 05:40:17,909 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 2260 mSDsluCounter, 3576 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2260 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:17,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2260 Valid, 4412 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:40:17,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6531 states. [2022-01-11 05:40:18,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6531 to 6246. [2022-01-11 05:40:18,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6246 states, 6245 states have (on average 1.7518014411529224) internal successors, (10940), 6245 states have internal predecessors, (10940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:18,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6246 states to 6246 states and 10940 transitions. [2022-01-11 05:40:18,521 INFO L78 Accepts]: Start accepts. Automaton has 6246 states and 10940 transitions. Word has length 116 [2022-01-11 05:40:18,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:18,521 INFO L470 AbstractCegarLoop]: Abstraction has 6246 states and 10940 transitions. [2022-01-11 05:40:18,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:18,521 INFO L276 IsEmpty]: Start isEmpty. Operand 6246 states and 10940 transitions. [2022-01-11 05:40:18,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-11 05:40:18,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:18,532 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:18,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 05:40:18,533 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:18,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:18,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1567274747, now seen corresponding path program 1 times [2022-01-11 05:40:18,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:18,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446258898] [2022-01-11 05:40:18,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:18,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:18,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:18,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446258898] [2022-01-11 05:40:18,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446258898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:18,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:18,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:40:18,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37810327] [2022-01-11 05:40:18,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:18,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:40:18,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:18,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:40:18,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:40:18,606 INFO L87 Difference]: Start difference. First operand 6246 states and 10940 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:19,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:19,348 INFO L93 Difference]: Finished difference Result 17318 states and 30308 transitions. [2022-01-11 05:40:19,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:40:19,350 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2022-01-11 05:40:19,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:19,364 INFO L225 Difference]: With dead ends: 17318 [2022-01-11 05:40:19,365 INFO L226 Difference]: Without dead ends: 11158 [2022-01-11 05:40:19,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:40:19,374 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 616 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:19,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 1234 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:40:19,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11158 states. [2022-01-11 05:40:20,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11158 to 10326. [2022-01-11 05:40:20,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10326 states, 10325 states have (on average 1.7603874092009686) internal successors, (18176), 10325 states have internal predecessors, (18176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:20,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10326 states to 10326 states and 18176 transitions. [2022-01-11 05:40:20,242 INFO L78 Accepts]: Start accepts. Automaton has 10326 states and 18176 transitions. Word has length 129 [2022-01-11 05:40:20,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:20,242 INFO L470 AbstractCegarLoop]: Abstraction has 10326 states and 18176 transitions. [2022-01-11 05:40:20,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:20,242 INFO L276 IsEmpty]: Start isEmpty. Operand 10326 states and 18176 transitions. [2022-01-11 05:40:20,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-11 05:40:20,257 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:20,257 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:20,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 05:40:20,258 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:20,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:20,258 INFO L85 PathProgramCache]: Analyzing trace with hash -43256444, now seen corresponding path program 1 times [2022-01-11 05:40:20,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:20,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367945177] [2022-01-11 05:40:20,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:20,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:20,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:20,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:20,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:20,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367945177] [2022-01-11 05:40:20,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367945177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:20,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:20,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:40:20,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817875226] [2022-01-11 05:40:20,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:20,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:40:20,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:20,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:40:20,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:40:20,323 INFO L87 Difference]: Start difference. First operand 10326 states and 18176 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:21,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:21,724 INFO L93 Difference]: Finished difference Result 30758 states and 54224 transitions. [2022-01-11 05:40:21,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:40:21,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2022-01-11 05:40:21,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:21,754 INFO L225 Difference]: With dead ends: 30758 [2022-01-11 05:40:21,754 INFO L226 Difference]: Without dead ends: 20518 [2022-01-11 05:40:21,763 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 [2022-01-11 05:40:21,765 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 614 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:21,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 1328 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:40:21,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20518 states. [2022-01-11 05:40:22,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20518 to 19686. [2022-01-11 05:40:22,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19686 states, 19685 states have (on average 1.769469138938278) internal successors, (34832), 19685 states have internal predecessors, (34832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:23,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19686 states to 19686 states and 34832 transitions. [2022-01-11 05:40:23,006 INFO L78 Accepts]: Start accepts. Automaton has 19686 states and 34832 transitions. Word has length 130 [2022-01-11 05:40:23,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:23,007 INFO L470 AbstractCegarLoop]: Abstraction has 19686 states and 34832 transitions. [2022-01-11 05:40:23,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:23,007 INFO L276 IsEmpty]: Start isEmpty. Operand 19686 states and 34832 transitions. [2022-01-11 05:40:23,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-11 05:40:23,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:23,036 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:23,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 05:40:23,037 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:23,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:23,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1025561676, now seen corresponding path program 1 times [2022-01-11 05:40:23,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:23,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036294203] [2022-01-11 05:40:23,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:23,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:23,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:23,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036294203] [2022-01-11 05:40:23,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036294203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:23,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:23,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:40:23,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756650117] [2022-01-11 05:40:23,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:23,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:40:23,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:23,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:40:23,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:40:23,108 INFO L87 Difference]: Start difference. First operand 19686 states and 34832 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:25,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:25,430 INFO L93 Difference]: Finished difference Result 58310 states and 103328 transitions. [2022-01-11 05:40:25,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:40:25,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-11 05:40:25,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:25,495 INFO L225 Difference]: With dead ends: 58310 [2022-01-11 05:40:25,496 INFO L226 Difference]: Without dead ends: 38710 [2022-01-11 05:40:25,518 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 [2022-01-11 05:40:25,519 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 612 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:25,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 1320 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:40:25,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38710 states. [2022-01-11 05:40:27,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38710 to 37878. [2022-01-11 05:40:27,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37878 states, 37877 states have (on average 1.775008580404995) internal successors, (67232), 37877 states have internal predecessors, (67232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:27,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37878 states to 37878 states and 67232 transitions. [2022-01-11 05:40:27,849 INFO L78 Accepts]: Start accepts. Automaton has 37878 states and 67232 transitions. Word has length 131 [2022-01-11 05:40:27,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:27,850 INFO L470 AbstractCegarLoop]: Abstraction has 37878 states and 67232 transitions. [2022-01-11 05:40:27,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:27,850 INFO L276 IsEmpty]: Start isEmpty. Operand 37878 states and 67232 transitions. [2022-01-11 05:40:27,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 05:40:27,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:27,917 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:27,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 05:40:27,917 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:27,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:27,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1537557794, now seen corresponding path program 1 times [2022-01-11 05:40:27,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:27,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030266286] [2022-01-11 05:40:27,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:27,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:27,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:27,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:27,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030266286] [2022-01-11 05:40:27,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030266286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:27,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:27,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:40:27,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642019559] [2022-01-11 05:40:27,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:27,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:40:27,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:27,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:40:27,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:40:27,985 INFO L87 Difference]: Start difference. First operand 37878 states and 67232 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:32,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:32,329 INFO L93 Difference]: Finished difference Result 107318 states and 190352 transitions. [2022-01-11 05:40:32,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:40:32,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-11 05:40:32,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:32,585 INFO L225 Difference]: With dead ends: 107318 [2022-01-11 05:40:32,585 INFO L226 Difference]: Without dead ends: 69526 [2022-01-11 05:40:32,629 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 [2022-01-11 05:40:32,630 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 610 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:32,630 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [610 Valid, 1272 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:40:32,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69526 states. [2022-01-11 05:40:37,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69526 to 68694. [2022-01-11 05:40:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68694 states, 68693 states have (on average 1.7725241290961233) internal successors, (121760), 68693 states have internal predecessors, (121760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68694 states to 68694 states and 121760 transitions. [2022-01-11 05:40:37,217 INFO L78 Accepts]: Start accepts. Automaton has 68694 states and 121760 transitions. Word has length 132 [2022-01-11 05:40:37,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:37,217 INFO L470 AbstractCegarLoop]: Abstraction has 68694 states and 121760 transitions. [2022-01-11 05:40:37,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:37,217 INFO L276 IsEmpty]: Start isEmpty. Operand 68694 states and 121760 transitions. [2022-01-11 05:40:37,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-11 05:40:37,317 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:37,317 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:37,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 05:40:37,317 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:37,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:37,318 INFO L85 PathProgramCache]: Analyzing trace with hash -958862858, now seen corresponding path program 1 times [2022-01-11 05:40:37,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:37,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582499754] [2022-01-11 05:40:37,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:37,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:40:37,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:37,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582499754] [2022-01-11 05:40:37,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582499754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:37,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:37,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:40:37,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261243990] [2022-01-11 05:40:37,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:37,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:40:37,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:37,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:40:37,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:40:37,388 INFO L87 Difference]: Start difference. First operand 68694 states and 121760 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:45,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:40:45,437 INFO L93 Difference]: Finished difference Result 193622 states and 342800 transitions. [2022-01-11 05:40:45,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:40:45,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2022-01-11 05:40:45,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:40:45,778 INFO L225 Difference]: With dead ends: 193622 [2022-01-11 05:40:45,778 INFO L226 Difference]: Without dead ends: 125014 [2022-01-11 05:40:46,010 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 [2022-01-11 05:40:46,011 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 608 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:40:46,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 1272 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:40:46,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125014 states. [2022-01-11 05:40:53,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125014 to 124182. [2022-01-11 05:40:53,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124182 states, 124181 states have (on average 1.7674845588294505) internal successors, (219488), 124181 states have internal predecessors, (219488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124182 states to 124182 states and 219488 transitions. [2022-01-11 05:40:54,474 INFO L78 Accepts]: Start accepts. Automaton has 124182 states and 219488 transitions. Word has length 133 [2022-01-11 05:40:54,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:40:54,474 INFO L470 AbstractCegarLoop]: Abstraction has 124182 states and 219488 transitions. [2022-01-11 05:40:54,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:40:54,475 INFO L276 IsEmpty]: Start isEmpty. Operand 124182 states and 219488 transitions. [2022-01-11 05:40:54,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-11 05:40:54,700 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:40:54,701 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:40:54,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 05:40:54,701 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:40:54,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:40:54,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1867721071, now seen corresponding path program 1 times [2022-01-11 05:40:54,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:40:54,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897084796] [2022-01-11 05:40:54,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:40:54,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:40:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:40:54,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 05:40:54,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:40:54,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897084796] [2022-01-11 05:40:54,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897084796] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:40:54,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:40:54,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:40:54,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038483871] [2022-01-11 05:40:54,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:40:54,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:40:54,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:40:54,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:40:54,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:40:54,873 INFO L87 Difference]: Start difference. First operand 124182 states and 219488 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)