/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:53:54,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:53:54,662 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:53:54,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:53:54,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:53:54,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:53:54,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:53:54,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:53:54,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:53:54,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:53:54,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:53:54,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:53:54,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:53:54,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:53:54,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:53:54,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:53:54,739 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:53:54,742 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:53:54,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:53:54,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:53:54,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:53:54,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:53:54,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:53:54,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:53:54,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:53:54,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:53:54,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:53:54,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:53:54,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:53:54,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:53:54,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:53:54,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:53:54,756 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:53:54,757 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:53:54,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:53:54,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:53:54,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:53:54,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:53:54,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:53:54,758 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:53:54,759 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:53:54,759 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:53:54,778 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:53:54,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:53:54,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:53:54,779 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:53:54,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:53:54,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:53:54,780 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:53:54,780 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:53:54,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:53:54,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:53:54,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:53:54,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:53:54,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:53:54,781 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:53:54,781 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:53:54,781 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:53:54,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:53:54,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:53:54,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:53:54,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:53:54,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:53:54,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:53:54,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:53:54,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:53:54,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:53:54,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:53:54,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:53:54,783 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:53:54,783 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:53:54,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:53:54,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:53:54,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:53:54,784 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:53:54,784 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:53:54,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:53:54,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:53:54,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:53:54,992 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:53:54,993 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:53:54,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product28.cil.c [2022-01-10 23:53:55,044 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88af50424/9b2163af5cc84fd791e16c4aef8d0722/FLAG1624543c4 [2022-01-10 23:53:55,501 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:53:55,501 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product28.cil.c [2022-01-10 23:53:55,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88af50424/9b2163af5cc84fd791e16c4aef8d0722/FLAG1624543c4 [2022-01-10 23:53:56,028 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88af50424/9b2163af5cc84fd791e16c4aef8d0722 [2022-01-10 23:53:56,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:53:56,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:53:56,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:53:56,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:53:56,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:53:56,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:53:56" (1/1) ... [2022-01-10 23:53:56,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71675425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:56, skipping insertion in model container [2022-01-10 23:53:56,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:53:56" (1/1) ... [2022-01-10 23:53:56,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:53:56,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:53:56,439 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_spec27_product28.cil.c[32786,32799] [2022-01-10 23:53:56,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:53:56,508 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:53:56,523 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:53:56,583 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_spec27_product28.cil.c[32786,32799] [2022-01-10 23:53:56,597 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:53:56,605 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:53:56,661 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_spec27_product28.cil.c[32786,32799] [2022-01-10 23:53:56,676 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:53:56,705 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:53:56,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:56 WrapperNode [2022-01-10 23:53:56,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:53:56,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:53:56,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:53:56,707 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:53:56,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:56" (1/1) ... [2022-01-10 23:53:56,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:56" (1/1) ... [2022-01-10 23:53:56,822 INFO L137 Inliner]: procedures = 130, calls = 209, calls flagged for inlining = 122, calls inlined = 147, statements flattened = 2315 [2022-01-10 23:53:56,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:53:56,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:53:56,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:53:56,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:53:56,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:56" (1/1) ... [2022-01-10 23:53:56,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:56" (1/1) ... [2022-01-10 23:53:56,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:56" (1/1) ... [2022-01-10 23:53:56,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:56" (1/1) ... [2022-01-10 23:53:56,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:56" (1/1) ... [2022-01-10 23:53:56,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:56" (1/1) ... [2022-01-10 23:53:56,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:56" (1/1) ... [2022-01-10 23:53:56,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:53:56,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:53:56,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:53:56,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:53:56,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:56" (1/1) ... [2022-01-10 23:53:56,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:53:56,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:53:56,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 23:53:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:53:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:53:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:53:56,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:53:56,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 23:53:56,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:53:57,181 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:53:57,182 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:53:58,125 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:53:58,134 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:53:58,135 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:53:58,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:53:58 BoogieIcfgContainer [2022-01-10 23:53:58,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:53:58,143 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:53:58,143 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:53:58,145 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:53:58,147 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:53:58" (1/1) ... [2022-01-10 23:53:58,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:53:58 BasicIcfg [2022-01-10 23:53:58,490 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:53:58,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:53:58,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:53:58,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:53:58,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:53:56" (1/4) ... [2022-01-10 23:53:58,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7176cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:53:58, skipping insertion in model container [2022-01-10 23:53:58,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:56" (2/4) ... [2022-01-10 23:53:58,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7176cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:53:58, skipping insertion in model container [2022-01-10 23:53:58,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:53:58" (3/4) ... [2022-01-10 23:53:58,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7176cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:53:58, skipping insertion in model container [2022-01-10 23:53:58,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:53:58" (4/4) ... [2022-01-10 23:53:58,495 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product28.cil.cTransformedIcfg [2022-01-10 23:53:58,499 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:53:58,499 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 23:53:58,542 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:53:58,546 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 23:53:58,546 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 23:53:58,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 539 states, 536 states have (on average 1.7070895522388059) internal successors, (915), 538 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:58,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:53:58,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:58,586 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] [2022-01-10 23:53:58,587 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:58,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:58,593 INFO L85 PathProgramCache]: Analyzing trace with hash 924278190, now seen corresponding path program 1 times [2022-01-10 23:53:58,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:58,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722645906] [2022-01-10 23:53:58,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:58,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:58,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:58,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:58,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722645906] [2022-01-10 23:53:58,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722645906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:58,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:58,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:53:58,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313649173] [2022-01-10 23:53:58,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:58,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:53:58,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:58,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:53:58,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:53:58,936 INFO L87 Difference]: Start difference. First operand has 539 states, 536 states have (on average 1.7070895522388059) internal successors, (915), 538 states have internal predecessors, (915), 0 states have call successors, (0), 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 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:58,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:58,986 INFO L93 Difference]: Finished difference Result 822 states and 1378 transitions. [2022-01-10 23:53:58,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:53:58,992 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 23:53:58,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:59,008 INFO L225 Difference]: With dead ends: 822 [2022-01-10 23:53:59,009 INFO L226 Difference]: Without dead ends: 522 [2022-01-10 23:53:59,014 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 [2022-01-10 23:53:59,019 INFO L933 BasicCegarLoop]: 909 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, 909 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 [2022-01-10 23:53:59,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:53:59,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-01-10 23:53:59,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2022-01-10 23:53:59,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 520 states have (on average 1.7134615384615384) internal successors, (891), 521 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:59,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 891 transitions. [2022-01-10 23:53:59,090 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 891 transitions. Word has length 69 [2022-01-10 23:53:59,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:59,091 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 891 transitions. [2022-01-10 23:53:59,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:59,092 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 891 transitions. [2022-01-10 23:53:59,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:53:59,094 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:59,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:59,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:53:59,095 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:59,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:59,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1312716094, now seen corresponding path program 1 times [2022-01-10 23:53:59,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:59,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060570844] [2022-01-10 23:53:59,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:59,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:59,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:59,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060570844] [2022-01-10 23:53:59,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060570844] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:59,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:59,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:53:59,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231699421] [2022-01-10 23:53:59,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:59,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:53:59,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:59,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:53:59,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:53:59,305 INFO L87 Difference]: Start difference. First operand 522 states and 891 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:59,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:59,372 INFO L93 Difference]: Finished difference Result 1025 states and 1754 transitions. [2022-01-10 23:53:59,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:53:59,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 23:53:59,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:59,374 INFO L225 Difference]: With dead ends: 1025 [2022-01-10 23:53:59,374 INFO L226 Difference]: Without dead ends: 522 [2022-01-10 23:53:59,381 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 [2022-01-10 23:53:59,382 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 866 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:59,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 886 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:53:59,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-01-10 23:53:59,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 522. [2022-01-10 23:53:59,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 520 states have (on average 1.7096153846153845) internal successors, (889), 521 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:59,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 889 transitions. [2022-01-10 23:53:59,399 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 889 transitions. Word has length 70 [2022-01-10 23:53:59,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:59,400 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 889 transitions. [2022-01-10 23:53:59,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:59,402 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 889 transitions. [2022-01-10 23:53:59,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:53:59,407 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:59,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:59,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:53:59,407 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:59,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:59,407 INFO L85 PathProgramCache]: Analyzing trace with hash 385780482, now seen corresponding path program 1 times [2022-01-10 23:53:59,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:59,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67317765] [2022-01-10 23:53:59,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:59,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:59,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:59,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:59,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67317765] [2022-01-10 23:53:59,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67317765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:59,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:59,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:53:59,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573552380] [2022-01-10 23:53:59,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:59,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:53:59,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:59,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:53:59,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:59,582 INFO L87 Difference]: Start difference. First operand 522 states and 889 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:59,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:59,756 INFO L93 Difference]: Finished difference Result 2478 states and 4241 transitions. [2022-01-10 23:53:59,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:53:59,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 23:53:59,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:59,765 INFO L225 Difference]: With dead ends: 2478 [2022-01-10 23:53:59,765 INFO L226 Difference]: Without dead ends: 1980 [2022-01-10 23:53:59,769 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 [2022-01-10 23:53:59,772 INFO L933 BasicCegarLoop]: 1701 mSDtfsCounter, 4228 mSDsluCounter, 2539 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4228 SdHoareTripleChecker+Valid, 4240 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 [2022-01-10 23:53:59,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4228 Valid, 4240 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:53:59,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2022-01-10 23:53:59,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 522. [2022-01-10 23:53:59,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 520 states have (on average 1.7076923076923076) internal successors, (888), 521 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:59,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 888 transitions. [2022-01-10 23:53:59,802 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 888 transitions. Word has length 72 [2022-01-10 23:53:59,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:59,803 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 888 transitions. [2022-01-10 23:53:59,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:59,803 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 888 transitions. [2022-01-10 23:53:59,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 23:53:59,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:59,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:59,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:53:59,805 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:59,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:59,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1182290824, now seen corresponding path program 1 times [2022-01-10 23:53:59,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:59,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41656765] [2022-01-10 23:53:59,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:59,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:59,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:59,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:59,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:59,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41656765] [2022-01-10 23:53:59,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41656765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:59,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:59,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:53:59,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292509163] [2022-01-10 23:53:59,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:59,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:53:59,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:59,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:53:59,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:53:59,933 INFO L87 Difference]: Start difference. First operand 522 states and 888 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:59,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:59,984 INFO L93 Difference]: Finished difference Result 1029 states and 1754 transitions. [2022-01-10 23:53:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:53:59,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 23:53:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:59,986 INFO L225 Difference]: With dead ends: 1029 [2022-01-10 23:53:59,986 INFO L226 Difference]: Without dead ends: 536 [2022-01-10 23:53:59,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:53:59,993 INFO L933 BasicCegarLoop]: 902 mSDtfsCounter, 867 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 924 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 [2022-01-10 23:53:59,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 924 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:53:59,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-01-10 23:54:00,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 522. [2022-01-10 23:54:00,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 520 states have (on average 1.7057692307692307) internal successors, (887), 521 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:00,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 887 transitions. [2022-01-10 23:54:00,028 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 887 transitions. Word has length 73 [2022-01-10 23:54:00,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:00,028 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 887 transitions. [2022-01-10 23:54:00,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:00,029 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 887 transitions. [2022-01-10 23:54:00,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 23:54:00,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:00,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:00,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:54:00,030 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:00,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:00,030 INFO L85 PathProgramCache]: Analyzing trace with hash -183362111, now seen corresponding path program 1 times [2022-01-10 23:54:00,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:00,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187686436] [2022-01-10 23:54:00,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:00,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:00,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:00,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:00,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187686436] [2022-01-10 23:54:00,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187686436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:00,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:00,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:54:00,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91813114] [2022-01-10 23:54:00,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:00,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:00,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:00,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:00,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:00,122 INFO L87 Difference]: Start difference. First operand 522 states and 887 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:00,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:00,245 INFO L93 Difference]: Finished difference Result 1500 states and 2561 transitions. [2022-01-10 23:54:00,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:54:00,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 23:54:00,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:00,249 INFO L225 Difference]: With dead ends: 1500 [2022-01-10 23:54:00,249 INFO L226 Difference]: Without dead ends: 1012 [2022-01-10 23:54:00,250 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 [2022-01-10 23:54:00,250 INFO L933 BasicCegarLoop]: 896 mSDtfsCounter, 4151 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4151 SdHoareTripleChecker+Valid, 1806 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 [2022-01-10 23:54:00,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4151 Valid, 1806 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:00,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2022-01-10 23:54:00,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 522. [2022-01-10 23:54:00,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 520 states have (on average 1.7019230769230769) internal successors, (885), 521 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:00,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 885 transitions. [2022-01-10 23:54:00,278 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 885 transitions. Word has length 74 [2022-01-10 23:54:00,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:00,278 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 885 transitions. [2022-01-10 23:54:00,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:00,278 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 885 transitions. [2022-01-10 23:54:00,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 23:54:00,279 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:00,279 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] [2022-01-10 23:54:00,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:54:00,280 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:00,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:00,280 INFO L85 PathProgramCache]: Analyzing trace with hash -258793148, now seen corresponding path program 1 times [2022-01-10 23:54:00,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:00,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801868160] [2022-01-10 23:54:00,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:00,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:00,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:00,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:00,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801868160] [2022-01-10 23:54:00,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801868160] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:00,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:00,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:54:00,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921650999] [2022-01-10 23:54:00,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:00,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:54:00,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:00,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:54:00,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:54:00,404 INFO L87 Difference]: Start difference. First operand 522 states and 885 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:00,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:00,801 INFO L93 Difference]: Finished difference Result 3395 states and 5711 transitions. [2022-01-10 23:54:00,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:54:00,801 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 23:54:00,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:00,812 INFO L225 Difference]: With dead ends: 3395 [2022-01-10 23:54:00,812 INFO L226 Difference]: Without dead ends: 3146 [2022-01-10 23:54:00,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:54:00,814 INFO L933 BasicCegarLoop]: 1443 mSDtfsCounter, 5935 mSDsluCounter, 5397 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5935 SdHoareTripleChecker+Valid, 6840 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:00,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5935 Valid, 6840 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:00,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2022-01-10 23:54:00,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 910. [2022-01-10 23:54:00,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 908 states have (on average 1.7037444933920705) internal successors, (1547), 909 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1547 transitions. [2022-01-10 23:54:00,879 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1547 transitions. Word has length 76 [2022-01-10 23:54:00,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:00,880 INFO L470 AbstractCegarLoop]: Abstraction has 910 states and 1547 transitions. [2022-01-10 23:54:00,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:00,880 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1547 transitions. [2022-01-10 23:54:00,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 23:54:00,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:00,884 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] [2022-01-10 23:54:00,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:54:00,884 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:00,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:00,885 INFO L85 PathProgramCache]: Analyzing trace with hash 2028092024, now seen corresponding path program 1 times [2022-01-10 23:54:00,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:00,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322553915] [2022-01-10 23:54:00,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:00,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:00,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:01,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:01,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322553915] [2022-01-10 23:54:01,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322553915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:01,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:01,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:54:01,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522393570] [2022-01-10 23:54:01,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:01,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:54:01,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:01,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:54:01,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:54:01,012 INFO L87 Difference]: Start difference. First operand 910 states and 1547 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:01,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:01,431 INFO L93 Difference]: Finished difference Result 5594 states and 9435 transitions. [2022-01-10 23:54:01,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:54:01,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 23:54:01,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:01,449 INFO L225 Difference]: With dead ends: 5594 [2022-01-10 23:54:01,449 INFO L226 Difference]: Without dead ends: 5218 [2022-01-10 23:54:01,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:54:01,460 INFO L933 BasicCegarLoop]: 1822 mSDtfsCounter, 4943 mSDsluCounter, 4907 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4943 SdHoareTripleChecker+Valid, 6729 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:01,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4943 Valid, 6729 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:01,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5218 states. [2022-01-10 23:54:01,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5218 to 1663. [2022-01-10 23:54:01,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1661 states have (on average 1.7104154124021673) internal successors, (2841), 1662 states have internal predecessors, (2841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:01,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2841 transitions. [2022-01-10 23:54:01,564 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2841 transitions. Word has length 77 [2022-01-10 23:54:01,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:01,564 INFO L470 AbstractCegarLoop]: Abstraction has 1663 states and 2841 transitions. [2022-01-10 23:54:01,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:01,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2841 transitions. [2022-01-10 23:54:01,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 23:54:01,567 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:01,567 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] [2022-01-10 23:54:01,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:54:01,567 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:01,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:01,567 INFO L85 PathProgramCache]: Analyzing trace with hash 102531086, now seen corresponding path program 1 times [2022-01-10 23:54:01,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:01,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531135724] [2022-01-10 23:54:01,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:01,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:01,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:01,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:01,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531135724] [2022-01-10 23:54:01,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531135724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:01,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:01,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:54:01,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862006953] [2022-01-10 23:54:01,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:01,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:01,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:01,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:01,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:01,629 INFO L87 Difference]: Start difference. First operand 1663 states and 2841 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:01,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:01,881 INFO L93 Difference]: Finished difference Result 4801 states and 8263 transitions. [2022-01-10 23:54:01,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:54:01,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 23:54:01,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:01,891 INFO L225 Difference]: With dead ends: 4801 [2022-01-10 23:54:01,892 INFO L226 Difference]: Without dead ends: 3188 [2022-01-10 23:54:01,896 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 [2022-01-10 23:54:01,896 INFO L933 BasicCegarLoop]: 1673 mSDtfsCounter, 2592 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2592 SdHoareTripleChecker+Valid, 2511 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:01,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2592 Valid, 2511 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:54:01,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3188 states. [2022-01-10 23:54:02,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3188 to 1663. [2022-01-10 23:54:02,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1661 states have (on average 1.7092113184828417) internal successors, (2839), 1662 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:02,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2839 transitions. [2022-01-10 23:54:02,034 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2839 transitions. Word has length 77 [2022-01-10 23:54:02,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:02,034 INFO L470 AbstractCegarLoop]: Abstraction has 1663 states and 2839 transitions. [2022-01-10 23:54:02,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:02,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2839 transitions. [2022-01-10 23:54:02,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 23:54:02,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:02,037 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] [2022-01-10 23:54:02,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:54:02,037 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:02,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:02,038 INFO L85 PathProgramCache]: Analyzing trace with hash 888373204, now seen corresponding path program 1 times [2022-01-10 23:54:02,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:02,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115890745] [2022-01-10 23:54:02,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:02,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:02,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:02,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115890745] [2022-01-10 23:54:02,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115890745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:02,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:02,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:54:02,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134523696] [2022-01-10 23:54:02,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:02,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:54:02,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:02,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:54:02,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:54:02,123 INFO L87 Difference]: Start difference. First operand 1663 states and 2839 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:02,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:02,808 INFO L93 Difference]: Finished difference Result 9937 states and 16823 transitions. [2022-01-10 23:54:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:54:02,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-10 23:54:02,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:02,847 INFO L225 Difference]: With dead ends: 9937 [2022-01-10 23:54:02,847 INFO L226 Difference]: Without dead ends: 9310 [2022-01-10 23:54:02,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:54:02,855 INFO L933 BasicCegarLoop]: 1828 mSDtfsCounter, 4881 mSDsluCounter, 4945 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4881 SdHoareTripleChecker+Valid, 6773 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:02,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4881 Valid, 6773 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:02,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9310 states. [2022-01-10 23:54:03,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9310 to 3130. [2022-01-10 23:54:03,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3130 states, 3128 states have (on average 1.7202685421994885) internal successors, (5381), 3129 states have internal predecessors, (5381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:03,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3130 states to 3130 states and 5381 transitions. [2022-01-10 23:54:03,076 INFO L78 Accepts]: Start accepts. Automaton has 3130 states and 5381 transitions. Word has length 78 [2022-01-10 23:54:03,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:03,077 INFO L470 AbstractCegarLoop]: Abstraction has 3130 states and 5381 transitions. [2022-01-10 23:54:03,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:03,077 INFO L276 IsEmpty]: Start isEmpty. Operand 3130 states and 5381 transitions. [2022-01-10 23:54:03,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 23:54:03,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:03,082 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] [2022-01-10 23:54:03,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:54:03,082 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:03,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:03,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1218138965, now seen corresponding path program 1 times [2022-01-10 23:54:03,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:03,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542357717] [2022-01-10 23:54:03,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:03,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:03,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:03,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542357717] [2022-01-10 23:54:03,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542357717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:03,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:03,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:54:03,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402416247] [2022-01-10 23:54:03,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:03,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:54:03,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:03,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:54:03,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:54:03,205 INFO L87 Difference]: Start difference. First operand 3130 states and 5381 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:04,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:04,229 INFO L93 Difference]: Finished difference Result 10664 states and 17887 transitions. [2022-01-10 23:54:04,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 23:54:04,229 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-10 23:54:04,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:04,247 INFO L225 Difference]: With dead ends: 10664 [2022-01-10 23:54:04,247 INFO L226 Difference]: Without dead ends: 9638 [2022-01-10 23:54:04,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-10 23:54:04,251 INFO L933 BasicCegarLoop]: 1137 mSDtfsCounter, 5287 mSDsluCounter, 7021 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5287 SdHoareTripleChecker+Valid, 8158 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:04,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5287 Valid, 8158 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:54:04,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9638 states. [2022-01-10 23:54:04,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9638 to 6069. [2022-01-10 23:54:04,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6069 states, 6067 states have (on average 1.726883138289105) internal successors, (10477), 6068 states have internal predecessors, (10477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:04,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6069 states to 6069 states and 10477 transitions. [2022-01-10 23:54:04,665 INFO L78 Accepts]: Start accepts. Automaton has 6069 states and 10477 transitions. Word has length 78 [2022-01-10 23:54:04,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:04,666 INFO L470 AbstractCegarLoop]: Abstraction has 6069 states and 10477 transitions. [2022-01-10 23:54:04,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:04,666 INFO L276 IsEmpty]: Start isEmpty. Operand 6069 states and 10477 transitions. [2022-01-10 23:54:04,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 23:54:04,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:04,676 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] [2022-01-10 23:54:04,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:54:04,676 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:04,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:04,677 INFO L85 PathProgramCache]: Analyzing trace with hash -2060438121, now seen corresponding path program 1 times [2022-01-10 23:54:04,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:04,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796793084] [2022-01-10 23:54:04,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:04,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:04,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:04,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:04,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796793084] [2022-01-10 23:54:04,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796793084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:04,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:04,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:54:04,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438509528] [2022-01-10 23:54:04,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:04,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:04,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:04,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:04,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:04,778 INFO L87 Difference]: Start difference. First operand 6069 states and 10477 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:06,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:06,145 INFO L93 Difference]: Finished difference Result 15459 states and 25859 transitions. [2022-01-10 23:54:06,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:54:06,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 23:54:06,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:06,172 INFO L225 Difference]: With dead ends: 15459 [2022-01-10 23:54:06,172 INFO L226 Difference]: Without dead ends: 13516 [2022-01-10 23:54:06,177 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 [2022-01-10 23:54:06,177 INFO L933 BasicCegarLoop]: 1111 mSDtfsCounter, 2099 mSDsluCounter, 2063 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2099 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:06,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2099 Valid, 3174 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:54:06,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13516 states. [2022-01-10 23:54:06,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13516 to 10252. [2022-01-10 23:54:06,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10252 states, 10250 states have (on average 1.7140487804878048) internal successors, (17569), 10251 states have internal predecessors, (17569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:06,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10252 states to 10252 states and 17569 transitions. [2022-01-10 23:54:06,866 INFO L78 Accepts]: Start accepts. Automaton has 10252 states and 17569 transitions. Word has length 79 [2022-01-10 23:54:06,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:06,866 INFO L470 AbstractCegarLoop]: Abstraction has 10252 states and 17569 transitions. [2022-01-10 23:54:06,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:06,867 INFO L276 IsEmpty]: Start isEmpty. Operand 10252 states and 17569 transitions. [2022-01-10 23:54:06,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 23:54:06,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:06,882 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] [2022-01-10 23:54:06,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:54:06,883 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:06,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:06,883 INFO L85 PathProgramCache]: Analyzing trace with hash -2049121994, now seen corresponding path program 1 times [2022-01-10 23:54:06,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:06,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898271816] [2022-01-10 23:54:06,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:06,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:06,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:06,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898271816] [2022-01-10 23:54:06,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898271816] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:06,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:06,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:54:06,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322036914] [2022-01-10 23:54:06,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:06,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:54:06,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:06,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:54:06,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:54:06,967 INFO L87 Difference]: Start difference. First operand 10252 states and 17569 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:09,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:09,086 INFO L93 Difference]: Finished difference Result 27188 states and 46047 transitions. [2022-01-10 23:54:09,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:54:09,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 23:54:09,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:09,137 INFO L225 Difference]: With dead ends: 27188 [2022-01-10 23:54:09,137 INFO L226 Difference]: Without dead ends: 25762 [2022-01-10 23:54:09,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:54:09,146 INFO L933 BasicCegarLoop]: 1629 mSDtfsCounter, 4670 mSDsluCounter, 5502 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4670 SdHoareTripleChecker+Valid, 7131 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:09,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4670 Valid, 7131 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:09,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25762 states. [2022-01-10 23:54:09,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25762 to 10428. [2022-01-10 23:54:09,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10428 states, 10426 states have (on average 1.7111068482639555) internal successors, (17840), 10427 states have internal predecessors, (17840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:09,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10428 states to 10428 states and 17840 transitions. [2022-01-10 23:54:09,956 INFO L78 Accepts]: Start accepts. Automaton has 10428 states and 17840 transitions. Word has length 79 [2022-01-10 23:54:09,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:09,956 INFO L470 AbstractCegarLoop]: Abstraction has 10428 states and 17840 transitions. [2022-01-10 23:54:09,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:09,956 INFO L276 IsEmpty]: Start isEmpty. Operand 10428 states and 17840 transitions. [2022-01-10 23:54:09,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 23:54:09,971 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:09,972 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] [2022-01-10 23:54:09,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:54:09,972 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:09,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:09,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1025109661, now seen corresponding path program 1 times [2022-01-10 23:54:09,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:09,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741459240] [2022-01-10 23:54:09,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:09,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:10,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:10,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:10,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:10,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741459240] [2022-01-10 23:54:10,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741459240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:10,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:10,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:54:10,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612989412] [2022-01-10 23:54:10,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:10,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:10,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:10,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:10,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:10,077 INFO L87 Difference]: Start difference. First operand 10428 states and 17840 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:12,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:12,706 INFO L93 Difference]: Finished difference Result 28068 states and 46052 transitions. [2022-01-10 23:54:12,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:54:12,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 23:54:12,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:12,754 INFO L225 Difference]: With dead ends: 28068 [2022-01-10 23:54:12,754 INFO L226 Difference]: Without dead ends: 25554 [2022-01-10 23:54:12,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:54:12,769 INFO L933 BasicCegarLoop]: 888 mSDtfsCounter, 2766 mSDsluCounter, 3020 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2766 SdHoareTripleChecker+Valid, 3908 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:12,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2766 Valid, 3908 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:12,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25554 states. [2022-01-10 23:54:13,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25554 to 14282. [2022-01-10 23:54:13,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14282 states, 14280 states have (on average 1.6781512605042017) internal successors, (23964), 14281 states have internal predecessors, (23964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:14,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14282 states to 14282 states and 23964 transitions. [2022-01-10 23:54:14,020 INFO L78 Accepts]: Start accepts. Automaton has 14282 states and 23964 transitions. Word has length 79 [2022-01-10 23:54:14,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:14,020 INFO L470 AbstractCegarLoop]: Abstraction has 14282 states and 23964 transitions. [2022-01-10 23:54:14,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:14,021 INFO L276 IsEmpty]: Start isEmpty. Operand 14282 states and 23964 transitions. [2022-01-10 23:54:14,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 23:54:14,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:14,036 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] [2022-01-10 23:54:14,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:54:14,037 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:14,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:14,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1675883615, now seen corresponding path program 1 times [2022-01-10 23:54:14,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:14,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775961404] [2022-01-10 23:54:14,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:14,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:14,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:14,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:14,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775961404] [2022-01-10 23:54:14,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775961404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:14,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:14,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:54:14,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579004976] [2022-01-10 23:54:14,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:14,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:14,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:14,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:14,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:14,131 INFO L87 Difference]: Start difference. First operand 14282 states and 23964 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:16,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:16,290 INFO L93 Difference]: Finished difference Result 25144 states and 40800 transitions. [2022-01-10 23:54:16,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:54:16,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 23:54:16,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:16,328 INFO L225 Difference]: With dead ends: 25144 [2022-01-10 23:54:16,328 INFO L226 Difference]: Without dead ends: 22200 [2022-01-10 23:54:16,339 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 [2022-01-10 23:54:16,340 INFO L933 BasicCegarLoop]: 1113 mSDtfsCounter, 1257 mSDsluCounter, 3079 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 4192 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:16,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1257 Valid, 4192 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:54:16,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22200 states. [2022-01-10 23:54:17,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22200 to 14414. [2022-01-10 23:54:17,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14414 states, 14412 states have (on average 1.671940049958368) internal successors, (24096), 14413 states have internal predecessors, (24096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:17,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14414 states to 14414 states and 24096 transitions. [2022-01-10 23:54:17,634 INFO L78 Accepts]: Start accepts. Automaton has 14414 states and 24096 transitions. Word has length 80 [2022-01-10 23:54:17,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:17,635 INFO L470 AbstractCegarLoop]: Abstraction has 14414 states and 24096 transitions. [2022-01-10 23:54:17,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:17,636 INFO L276 IsEmpty]: Start isEmpty. Operand 14414 states and 24096 transitions. [2022-01-10 23:54:17,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 23:54:17,651 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:17,651 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] [2022-01-10 23:54:17,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:54:17,651 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:17,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:17,652 INFO L85 PathProgramCache]: Analyzing trace with hash 801667327, now seen corresponding path program 1 times [2022-01-10 23:54:17,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:17,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047130374] [2022-01-10 23:54:17,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:17,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:17,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:17,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:17,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047130374] [2022-01-10 23:54:17,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047130374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:17,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:17,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:54:17,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334475725] [2022-01-10 23:54:17,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:17,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:54:17,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:17,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:54:17,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:54:17,779 INFO L87 Difference]: Start difference. First operand 14414 states and 24096 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:19,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:19,338 INFO L93 Difference]: Finished difference Result 21054 states and 34551 transitions. [2022-01-10 23:54:19,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 23:54:19,339 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 23:54:19,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:19,360 INFO L225 Difference]: With dead ends: 21054 [2022-01-10 23:54:19,360 INFO L226 Difference]: Without dead ends: 14522 [2022-01-10 23:54:19,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:54:19,371 INFO L933 BasicCegarLoop]: 860 mSDtfsCounter, 2526 mSDsluCounter, 4775 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2526 SdHoareTripleChecker+Valid, 5635 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:19,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2526 Valid, 5635 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:19,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14522 states. [2022-01-10 23:54:20,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14522 to 14286. [2022-01-10 23:54:20,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14286 states, 14284 states have (on average 1.6645197423690843) internal successors, (23776), 14285 states have internal predecessors, (23776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:20,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14286 states to 14286 states and 23776 transitions. [2022-01-10 23:54:20,693 INFO L78 Accepts]: Start accepts. Automaton has 14286 states and 23776 transitions. Word has length 80 [2022-01-10 23:54:20,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:20,693 INFO L470 AbstractCegarLoop]: Abstraction has 14286 states and 23776 transitions. [2022-01-10 23:54:20,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:20,694 INFO L276 IsEmpty]: Start isEmpty. Operand 14286 states and 23776 transitions. [2022-01-10 23:54:20,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 23:54:20,710 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:20,710 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] [2022-01-10 23:54:20,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:54:20,710 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:20,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:20,711 INFO L85 PathProgramCache]: Analyzing trace with hash 336794499, now seen corresponding path program 1 times [2022-01-10 23:54:20,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:20,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265826816] [2022-01-10 23:54:20,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:20,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:20,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:20,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:20,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265826816] [2022-01-10 23:54:20,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265826816] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:20,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:20,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:54:20,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523090320] [2022-01-10 23:54:20,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:20,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:54:20,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:20,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:54:20,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:54:20,777 INFO L87 Difference]: Start difference. First operand 14286 states and 23776 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:24,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:24,464 INFO L93 Difference]: Finished difference Result 36690 states and 58096 transitions. [2022-01-10 23:54:24,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:54:24,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 23:54:24,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:24,511 INFO L225 Difference]: With dead ends: 36690 [2022-01-10 23:54:24,512 INFO L226 Difference]: Without dead ends: 28846 [2022-01-10 23:54:24,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:24,525 INFO L933 BasicCegarLoop]: 1018 mSDtfsCounter, 837 mSDsluCounter, 1831 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:24,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 2849 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:24,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28846 states. [2022-01-10 23:54:26,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28846 to 14366. [2022-01-10 23:54:26,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14366 states, 14364 states have (on average 1.6608187134502923) internal successors, (23856), 14365 states have internal predecessors, (23856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:26,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14366 states to 14366 states and 23856 transitions. [2022-01-10 23:54:26,047 INFO L78 Accepts]: Start accepts. Automaton has 14366 states and 23856 transitions. Word has length 83 [2022-01-10 23:54:26,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:26,047 INFO L470 AbstractCegarLoop]: Abstraction has 14366 states and 23856 transitions. [2022-01-10 23:54:26,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:26,048 INFO L276 IsEmpty]: Start isEmpty. Operand 14366 states and 23856 transitions. [2022-01-10 23:54:26,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 23:54:26,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:26,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:26,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:54:26,062 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:26,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:26,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1100140155, now seen corresponding path program 1 times [2022-01-10 23:54:26,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:26,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777746069] [2022-01-10 23:54:26,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:26,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:26,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:26,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:26,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777746069] [2022-01-10 23:54:26,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777746069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:26,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:26,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:54:26,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905007946] [2022-01-10 23:54:26,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:26,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:54:26,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:26,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:54:26,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:54:26,167 INFO L87 Difference]: Start difference. First operand 14366 states and 23856 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:29,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:29,057 INFO L93 Difference]: Finished difference Result 28152 states and 45640 transitions. [2022-01-10 23:54:29,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 23:54:29,058 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 23:54:29,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:29,089 INFO L225 Difference]: With dead ends: 28152 [2022-01-10 23:54:29,089 INFO L226 Difference]: Without dead ends: 23020 [2022-01-10 23:54:29,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:54:29,097 INFO L933 BasicCegarLoop]: 1202 mSDtfsCounter, 3567 mSDsluCounter, 4122 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3567 SdHoareTripleChecker+Valid, 5324 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:29,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3567 Valid, 5324 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:29,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23020 states. [2022-01-10 23:54:30,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23020 to 16804. [2022-01-10 23:54:30,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16804 states, 16802 states have (on average 1.6480180930841566) internal successors, (27690), 16803 states have internal predecessors, (27690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:30,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16804 states to 16804 states and 27690 transitions. [2022-01-10 23:54:30,999 INFO L78 Accepts]: Start accepts. Automaton has 16804 states and 27690 transitions. Word has length 83 [2022-01-10 23:54:30,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:30,999 INFO L470 AbstractCegarLoop]: Abstraction has 16804 states and 27690 transitions. [2022-01-10 23:54:30,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:31,000 INFO L276 IsEmpty]: Start isEmpty. Operand 16804 states and 27690 transitions. [2022-01-10 23:54:31,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 23:54:31,013 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:31,013 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] [2022-01-10 23:54:31,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 23:54:31,013 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:31,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:31,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1438734777, now seen corresponding path program 1 times [2022-01-10 23:54:31,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:31,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853962913] [2022-01-10 23:54:31,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:31,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:31,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:31,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:31,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853962913] [2022-01-10 23:54:31,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853962913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:31,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:31,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:54:31,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192894622] [2022-01-10 23:54:31,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:31,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:54:31,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:31,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:54:31,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:54:31,075 INFO L87 Difference]: Start difference. First operand 16804 states and 27690 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:32,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:32,877 INFO L93 Difference]: Finished difference Result 21468 states and 35088 transitions. [2022-01-10 23:54:32,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:54:32,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 23:54:32,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:32,901 INFO L225 Difference]: With dead ends: 21468 [2022-01-10 23:54:32,901 INFO L226 Difference]: Without dead ends: 16804 [2022-01-10 23:54:32,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:32,910 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 873 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:32,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 1758 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:54:32,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16804 states. [2022-01-10 23:54:34,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16804 to 16804. [2022-01-10 23:54:34,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16804 states, 16802 states have (on average 1.6470658254969646) internal successors, (27674), 16803 states have internal predecessors, (27674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16804 states to 16804 states and 27674 transitions. [2022-01-10 23:54:34,836 INFO L78 Accepts]: Start accepts. Automaton has 16804 states and 27674 transitions. Word has length 83 [2022-01-10 23:54:34,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:34,836 INFO L470 AbstractCegarLoop]: Abstraction has 16804 states and 27674 transitions. [2022-01-10 23:54:34,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:34,837 INFO L276 IsEmpty]: Start isEmpty. Operand 16804 states and 27674 transitions. [2022-01-10 23:54:34,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 23:54:34,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:34,849 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] [2022-01-10 23:54:34,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 23:54:34,849 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:34,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:34,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1831538598, now seen corresponding path program 1 times [2022-01-10 23:54:34,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:34,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394077397] [2022-01-10 23:54:34,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:34,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:34,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:34,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:34,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394077397] [2022-01-10 23:54:34,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394077397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:34,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:34,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:54:34,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640534524] [2022-01-10 23:54:34,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:34,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:34,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:34,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:34,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:34,919 INFO L87 Difference]: Start difference. First operand 16804 states and 27674 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:45,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:45,826 INFO L93 Difference]: Finished difference Result 80082 states and 126016 transitions. [2022-01-10 23:54:45,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:54:45,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 23:54:45,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:45,936 INFO L225 Difference]: With dead ends: 80082 [2022-01-10 23:54:45,936 INFO L226 Difference]: Without dead ends: 70038 [2022-01-10 23:54:45,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:54:45,964 INFO L933 BasicCegarLoop]: 922 mSDtfsCounter, 3116 mSDsluCounter, 3037 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3116 SdHoareTripleChecker+Valid, 3959 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:45,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3116 Valid, 3959 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:54:46,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70038 states. [2022-01-10 23:54:49,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70038 to 32826. [2022-01-10 23:54:49,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32826 states, 32824 states have (on average 1.6485498415793323) internal successors, (54112), 32825 states have internal predecessors, (54112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32826 states to 32826 states and 54112 transitions. [2022-01-10 23:54:50,002 INFO L78 Accepts]: Start accepts. Automaton has 32826 states and 54112 transitions. Word has length 83 [2022-01-10 23:54:50,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:50,003 INFO L470 AbstractCegarLoop]: Abstraction has 32826 states and 54112 transitions. [2022-01-10 23:54:50,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:50,003 INFO L276 IsEmpty]: Start isEmpty. Operand 32826 states and 54112 transitions. [2022-01-10 23:54:50,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 23:54:50,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:50,037 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] [2022-01-10 23:54:50,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 23:54:50,038 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:50,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:50,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1700083042, now seen corresponding path program 1 times [2022-01-10 23:54:50,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:50,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709014387] [2022-01-10 23:54:50,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:50,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:50,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:50,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:50,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709014387] [2022-01-10 23:54:50,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709014387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:50,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:50,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:54:50,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128320112] [2022-01-10 23:54:50,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:50,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:50,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:50,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:50,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:50,111 INFO L87 Difference]: Start difference. First operand 32826 states and 54112 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:57,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:57,364 INFO L93 Difference]: Finished difference Result 69410 states and 111648 transitions. [2022-01-10 23:54:57,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:54:57,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 23:54:57,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:57,446 INFO L225 Difference]: With dead ends: 69410 [2022-01-10 23:54:57,446 INFO L226 Difference]: Without dead ends: 52998 [2022-01-10 23:54:57,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:54:57,465 INFO L933 BasicCegarLoop]: 1572 mSDtfsCounter, 2173 mSDsluCounter, 3280 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2173 SdHoareTripleChecker+Valid, 4852 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:57,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2173 Valid, 4852 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:57,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52998 states. [2022-01-10 23:55:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52998 to 33482. [2022-01-10 23:55:01,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33482 states, 33480 states have (on average 1.63584229390681) internal successors, (54768), 33481 states have internal predecessors, (54768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:01,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33482 states to 33482 states and 54768 transitions. [2022-01-10 23:55:01,816 INFO L78 Accepts]: Start accepts. Automaton has 33482 states and 54768 transitions. Word has length 83 [2022-01-10 23:55:01,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:55:01,816 INFO L470 AbstractCegarLoop]: Abstraction has 33482 states and 54768 transitions. [2022-01-10 23:55:01,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:01,816 INFO L276 IsEmpty]: Start isEmpty. Operand 33482 states and 54768 transitions. [2022-01-10 23:55:01,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 23:55:01,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:55:01,841 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] [2022-01-10 23:55:01,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 23:55:01,842 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:55:01,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:55:01,842 INFO L85 PathProgramCache]: Analyzing trace with hash -584677630, now seen corresponding path program 1 times [2022-01-10 23:55:01,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:55:01,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329126770] [2022-01-10 23:55:01,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:55:01,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:55:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:55:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:55:01,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:55:01,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329126770] [2022-01-10 23:55:01,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329126770] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:55:01,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:55:01,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:55:01,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515032471] [2022-01-10 23:55:01,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:55:01,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:55:01,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:55:01,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:55:01,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:55:01,920 INFO L87 Difference]: Start difference. First operand 33482 states and 54768 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)