/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product27.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:46:18,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:46:18,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:46:18,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:46:18,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:46:18,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:46:18,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:46:18,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:46:18,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:46:18,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:46:18,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:46:18,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:46:18,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:46:18,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:46:18,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:46:18,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:46:18,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:46:18,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:46:18,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:46:18,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:46:18,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:46:18,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:46:18,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:46:18,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:46:18,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:46:18,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:46:18,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:46:18,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:46:18,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:46:18,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:46:18,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:46:18,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:46:18,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:46:18,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:46:18,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:46:18,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:46:18,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:46:18,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:46:18,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:46:18,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:46:18,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:46:18,833 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 23:46:18,860 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:46:18,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:46:18,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:46:18,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:46:18,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:46:18,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:46:18,862 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:46:18,862 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:46:18,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:46:18,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:46:18,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:46:18,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:46:18,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:46:18,863 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:46:18,863 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:46:18,863 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:46:18,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:46:18,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:46:18,863 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:46:18,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:46:18,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:46:18,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:46:18,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:46:18,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:46:18,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:46:18,864 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:46:18,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:46:18,864 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:46:18,864 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:46:18,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:46:18,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:46:18,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:46:18,865 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:46:18,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:46:19,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:46:19,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:46:19,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:46:19,065 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:46:19,067 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:46:19,068 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product27.cil.c [2022-01-10 23:46:19,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fa15296c/2c796eca7dec48c6a2a7b79940f28609/FLAG1ea2af917 [2022-01-10 23:46:19,529 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:46:19,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product27.cil.c [2022-01-10 23:46:19,545 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fa15296c/2c796eca7dec48c6a2a7b79940f28609/FLAG1ea2af917 [2022-01-10 23:46:19,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fa15296c/2c796eca7dec48c6a2a7b79940f28609 [2022-01-10 23:46:19,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:46:19,863 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:46:19,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:46:19,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:46:19,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:46:19,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:46:19" (1/1) ... [2022-01-10 23:46:19,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1afb36c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:46:19, skipping insertion in model container [2022-01-10 23:46:19,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:46:19" (1/1) ... [2022-01-10 23:46:19,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:46:19,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:46:20,168 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product27.cil.c[16494,16507] [2022-01-10 23:46:20,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:46:20,342 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:46:20,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:46:20,371 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product27.cil.c[16494,16507] [2022-01-10 23:46:20,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:46:20,413 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:46:20,434 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product27.cil.c[16494,16507] [2022-01-10 23:46:20,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:46:20,485 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:46:20,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:46:20 WrapperNode [2022-01-10 23:46:20,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:46:20,487 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:46:20,487 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:46:20,487 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:46:20,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:46:20" (1/1) ... [2022-01-10 23:46:20,511 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:46:20" (1/1) ... [2022-01-10 23:46:20,618 INFO L137 Inliner]: procedures = 97, calls = 342, calls flagged for inlining = 195, calls inlined = 330, statements flattened = 9572 [2022-01-10 23:46:20,618 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:46:20,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:46:20,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:46:20,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:46:20,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:46:20" (1/1) ... [2022-01-10 23:46:20,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:46:20" (1/1) ... [2022-01-10 23:46:20,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:46:20" (1/1) ... [2022-01-10 23:46:20,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:46:20" (1/1) ... [2022-01-10 23:46:20,693 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:46:20" (1/1) ... [2022-01-10 23:46:20,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:46:20" (1/1) ... [2022-01-10 23:46:20,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:46:20" (1/1) ... [2022-01-10 23:46:20,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:46:20,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:46:20,772 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:46:20,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:46:20,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:46:20" (1/1) ... [2022-01-10 23:46:20,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:46:20,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:46:20,798 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 23:46:20,815 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 23:46:20,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:46:20,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:46:20,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:46:20,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:46:20,992 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:46:20,993 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:46:24,360 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:46:24,388 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:46:24,389 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:46:24,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:46:24 BoogieIcfgContainer [2022-01-10 23:46:24,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:46:24,395 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:46:24,395 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:46:24,396 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:46:24,399 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:46:24" (1/1) ... [2022-01-10 23:46:25,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:46:25 BasicIcfg [2022-01-10 23:46:25,036 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:46:25,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:46:25,037 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:46:25,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:46:25,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:46:19" (1/4) ... [2022-01-10 23:46:25,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673cddd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:46:25, skipping insertion in model container [2022-01-10 23:46:25,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:46:20" (2/4) ... [2022-01-10 23:46:25,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673cddd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:46:25, skipping insertion in model container [2022-01-10 23:46:25,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:46:24" (3/4) ... [2022-01-10 23:46:25,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@673cddd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:46:25, skipping insertion in model container [2022-01-10 23:46:25,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:46:25" (4/4) ... [2022-01-10 23:46:25,042 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product27.cil.cTransformedIcfg [2022-01-10 23:46:25,046 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:46:25,046 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 23:46:25,094 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:46:25,099 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 23:46:25,100 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 23:46:25,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 2676 states, 2670 states have (on average 1.8588014981273409) internal successors, (4963), 2675 states have internal predecessors, (4963), 0 states have call successors, (0), 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 23:46:25,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 23:46:25,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:46:25,161 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] [2022-01-10 23:46:25,161 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:46:25,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:46:25,165 INFO L85 PathProgramCache]: Analyzing trace with hash -179029468, now seen corresponding path program 1 times [2022-01-10 23:46:25,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:46:25,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414596433] [2022-01-10 23:46:25,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:46:25,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:46:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:46:25,450 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 23:46:25,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:46:25,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414596433] [2022-01-10 23:46:25,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414596433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:46:25,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:46:25,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:46:25,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002485653] [2022-01-10 23:46:25,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:46:25,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:46:25,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:46:25,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:46:25,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:46:25,480 INFO L87 Difference]: Start difference. First operand has 2676 states, 2670 states have (on average 1.8588014981273409) internal successors, (4963), 2675 states have internal predecessors, (4963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:46:25,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:46:25,691 INFO L93 Difference]: Finished difference Result 5337 states and 9903 transitions. [2022-01-10 23:46:25,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:46:25,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-10 23:46:25,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:46:25,716 INFO L225 Difference]: With dead ends: 5337 [2022-01-10 23:46:25,716 INFO L226 Difference]: Without dead ends: 2665 [2022-01-10 23:46:25,726 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 23:46:25,734 INFO L933 BasicCegarLoop]: 4942 mSDtfsCounter, 4937 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4937 SdHoareTripleChecker+Valid, 4953 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:46:25,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4937 Valid, 4953 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:46:25,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2022-01-10 23:46:25,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2665. [2022-01-10 23:46:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 2660 states have (on average 1.856766917293233) internal successors, (4939), 2664 states have internal predecessors, (4939), 0 states have call successors, (0), 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 23:46:25,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 4939 transitions. [2022-01-10 23:46:25,857 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 4939 transitions. Word has length 51 [2022-01-10 23:46:25,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:46:25,858 INFO L470 AbstractCegarLoop]: Abstraction has 2665 states and 4939 transitions. [2022-01-10 23:46:25,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:46:25,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 4939 transitions. [2022-01-10 23:46:25,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 23:46:25,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:46:25,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:46:25,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:46:25,863 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:46:25,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:46:25,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1527882166, now seen corresponding path program 1 times [2022-01-10 23:46:25,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:46:25,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975582229] [2022-01-10 23:46:25,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:46:25,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:46:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:46:26,052 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 23:46:26,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:46:26,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975582229] [2022-01-10 23:46:26,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975582229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:46:26,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:46:26,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:46:26,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134540501] [2022-01-10 23:46:26,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:46:26,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:46:26,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:46:26,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:46:26,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:46:26,059 INFO L87 Difference]: Start difference. First operand 2665 states and 4939 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:46:26,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:46:26,261 INFO L93 Difference]: Finished difference Result 5316 states and 9863 transitions. [2022-01-10 23:46:26,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:46:26,276 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 23:46:26,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:46:26,285 INFO L225 Difference]: With dead ends: 5316 [2022-01-10 23:46:26,285 INFO L226 Difference]: Without dead ends: 2665 [2022-01-10 23:46:26,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:46:26,289 INFO L933 BasicCegarLoop]: 4932 mSDtfsCounter, 14791 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14791 SdHoareTripleChecker+Valid, 4939 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:46:26,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14791 Valid, 4939 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:46:26,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2022-01-10 23:46:26,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2665. [2022-01-10 23:46:26,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 2660 states have (on average 1.856390977443609) internal successors, (4938), 2664 states have internal predecessors, (4938), 0 states have call successors, (0), 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 23:46:26,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 4938 transitions. [2022-01-10 23:46:26,352 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 4938 transitions. Word has length 58 [2022-01-10 23:46:26,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:46:26,353 INFO L470 AbstractCegarLoop]: Abstraction has 2665 states and 4938 transitions. [2022-01-10 23:46:26,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:46:26,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 4938 transitions. [2022-01-10 23:46:26,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 23:46:26,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:46:26,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:46:26,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:46:26,364 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:46:26,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:46:26,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1066344651, now seen corresponding path program 1 times [2022-01-10 23:46:26,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:46:26,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350426044] [2022-01-10 23:46:26,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:46:26,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:46:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:46:26,447 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 23:46:26,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:46:26,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350426044] [2022-01-10 23:46:26,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350426044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:46:26,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:46:26,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:46:26,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181899556] [2022-01-10 23:46:26,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:46:26,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:46:26,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:46:26,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:46:26,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:46:26,450 INFO L87 Difference]: Start difference. First operand 2665 states and 4938 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:46:26,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:46:26,561 INFO L93 Difference]: Finished difference Result 5280 states and 9791 transitions. [2022-01-10 23:46:26,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:46:26,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 23:46:26,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:46:26,572 INFO L225 Difference]: With dead ends: 5280 [2022-01-10 23:46:26,572 INFO L226 Difference]: Without dead ends: 2665 [2022-01-10 23:46:26,579 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 23:46:26,583 INFO L933 BasicCegarLoop]: 4878 mSDtfsCounter, 4897 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4897 SdHoareTripleChecker+Valid, 4892 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:46:26,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4897 Valid, 4892 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:46:26,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2665 states. [2022-01-10 23:46:26,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2665 to 2665. [2022-01-10 23:46:26,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2665 states, 2660 states have (on average 1.8469924812030074) internal successors, (4913), 2664 states have internal predecessors, (4913), 0 states have call successors, (0), 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 23:46:26,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2665 states to 2665 states and 4913 transitions. [2022-01-10 23:46:26,648 INFO L78 Accepts]: Start accepts. Automaton has 2665 states and 4913 transitions. Word has length 58 [2022-01-10 23:46:26,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:46:26,648 INFO L470 AbstractCegarLoop]: Abstraction has 2665 states and 4913 transitions. [2022-01-10 23:46:26,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:46:26,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2665 states and 4913 transitions. [2022-01-10 23:46:26,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 23:46:26,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:46:26,651 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] [2022-01-10 23:46:26,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:46:26,652 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:46:26,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:46:26,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1283332678, now seen corresponding path program 1 times [2022-01-10 23:46:26,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:46:26,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275413550] [2022-01-10 23:46:26,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:46:26,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:46:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:46:26,724 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 23:46:26,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:46:26,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275413550] [2022-01-10 23:46:26,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275413550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:46:26,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:46:26,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:46:26,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983971433] [2022-01-10 23:46:26,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:46:26,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:46:26,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:46:26,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:46:26,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:46:26,726 INFO L87 Difference]: Start difference. First operand 2665 states and 4913 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:46:26,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:46:26,858 INFO L93 Difference]: Finished difference Result 5979 states and 11072 transitions. [2022-01-10 23:46:26,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:46:26,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 23:46:26,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:46:26,873 INFO L225 Difference]: With dead ends: 5979 [2022-01-10 23:46:26,874 INFO L226 Difference]: Without dead ends: 4623 [2022-01-10 23:46:26,877 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 23:46:26,878 INFO L933 BasicCegarLoop]: 5378 mSDtfsCounter, 4847 mSDsluCounter, 3643 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4847 SdHoareTripleChecker+Valid, 9021 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:46:26,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4847 Valid, 9021 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:46:26,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4623 states. [2022-01-10 23:46:27,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4623 to 4623. [2022-01-10 23:46:27,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4623 states, 4618 states have (on average 1.8546990038977913) internal successors, (8565), 4622 states have internal predecessors, (8565), 0 states have call successors, (0), 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 23:46:27,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4623 states to 4623 states and 8565 transitions. [2022-01-10 23:46:27,047 INFO L78 Accepts]: Start accepts. Automaton has 4623 states and 8565 transitions. Word has length 61 [2022-01-10 23:46:27,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:46:27,048 INFO L470 AbstractCegarLoop]: Abstraction has 4623 states and 8565 transitions. [2022-01-10 23:46:27,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:46:27,048 INFO L276 IsEmpty]: Start isEmpty. Operand 4623 states and 8565 transitions. [2022-01-10 23:46:27,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 23:46:27,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:46:27,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:46:27,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:46:27,052 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:46:27,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:46:27,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1623176503, now seen corresponding path program 1 times [2022-01-10 23:46:27,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:46:27,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409684440] [2022-01-10 23:46:27,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:46:27,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:46:27,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:46:27,148 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 23:46:27,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:46:27,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409684440] [2022-01-10 23:46:27,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409684440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:46:27,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:46:27,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:46:27,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403191982] [2022-01-10 23:46:27,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:46:27,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:46:27,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:46:27,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:46:27,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:46:27,152 INFO L87 Difference]: Start difference. First operand 4623 states and 8565 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:46:27,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:46:27,361 INFO L93 Difference]: Finished difference Result 11110 states and 20626 transitions. [2022-01-10 23:46:27,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:46:27,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 23:46:27,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:46:27,392 INFO L225 Difference]: With dead ends: 11110 [2022-01-10 23:46:27,392 INFO L226 Difference]: Without dead ends: 8422 [2022-01-10 23:46:27,400 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 23:46:27,400 INFO L933 BasicCegarLoop]: 4910 mSDtfsCounter, 4846 mSDsluCounter, 3646 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4846 SdHoareTripleChecker+Valid, 8556 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:46:27,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4846 Valid, 8556 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:46:27,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8422 states. [2022-01-10 23:46:27,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8422 to 8420. [2022-01-10 23:46:27,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8420 states, 8415 states have (on average 1.8589423648247179) internal successors, (15643), 8419 states have internal predecessors, (15643), 0 states have call successors, (0), 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 23:46:27,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8420 states to 8420 states and 15643 transitions. [2022-01-10 23:46:27,628 INFO L78 Accepts]: Start accepts. Automaton has 8420 states and 15643 transitions. Word has length 63 [2022-01-10 23:46:27,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:46:27,628 INFO L470 AbstractCegarLoop]: Abstraction has 8420 states and 15643 transitions. [2022-01-10 23:46:27,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:46:27,628 INFO L276 IsEmpty]: Start isEmpty. Operand 8420 states and 15643 transitions. [2022-01-10 23:46:27,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 23:46:27,631 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:46:27,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:46:27,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:46:27,631 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:46:27,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:46:27,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1629360537, now seen corresponding path program 1 times [2022-01-10 23:46:27,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:46:27,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373818657] [2022-01-10 23:46:27,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:46:27,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:46:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:46:27,683 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 23:46:27,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:46:27,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373818657] [2022-01-10 23:46:27,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373818657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:46:27,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:46:27,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:46:27,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839984526] [2022-01-10 23:46:27,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:46:27,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:46:27,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:46:27,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:46:27,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:46:27,685 INFO L87 Difference]: Start difference. First operand 8420 states and 15643 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:46:27,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:46:27,945 INFO L93 Difference]: Finished difference Result 21122 states and 39263 transitions. [2022-01-10 23:46:27,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:46:27,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 23:46:27,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:46:28,019 INFO L225 Difference]: With dead ends: 21122 [2022-01-10 23:46:28,019 INFO L226 Difference]: Without dead ends: 15779 [2022-01-10 23:46:28,033 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 23:46:28,034 INFO L933 BasicCegarLoop]: 4910 mSDtfsCounter, 4834 mSDsluCounter, 3649 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4834 SdHoareTripleChecker+Valid, 8559 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:46:28,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4834 Valid, 8559 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:46:28,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15779 states. [2022-01-10 23:46:28,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15779 to 15775. [2022-01-10 23:46:28,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15770 states have (on average 1.8608116677235256) internal successors, (29345), 15774 states have internal predecessors, (29345), 0 states have call successors, (0), 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 23:46:28,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 29345 transitions. [2022-01-10 23:46:28,475 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 29345 transitions. Word has length 64 [2022-01-10 23:46:28,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:46:28,476 INFO L470 AbstractCegarLoop]: Abstraction has 15775 states and 29345 transitions. [2022-01-10 23:46:28,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:46:28,476 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 29345 transitions. [2022-01-10 23:46:28,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 23:46:28,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:46:28,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:46:28,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:46:28,479 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:46:28,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:46:28,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1029446180, now seen corresponding path program 1 times [2022-01-10 23:46:28,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:46:28,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588662891] [2022-01-10 23:46:28,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:46:28,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:46:28,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:46:28,560 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 23:46:28,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:46:28,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588662891] [2022-01-10 23:46:28,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588662891] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:46:28,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:46:28,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:46:28,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538730769] [2022-01-10 23:46:28,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:46:28,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:46:28,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:46:28,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:46:28,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:46:28,562 INFO L87 Difference]: Start difference. First operand 15775 states and 29345 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:46:29,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:46:29,141 INFO L93 Difference]: Finished difference Result 40646 states and 75592 transitions. [2022-01-10 23:46:29,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:46:29,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 23:46:29,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:46:29,218 INFO L225 Difference]: With dead ends: 40646 [2022-01-10 23:46:29,218 INFO L226 Difference]: Without dead ends: 30012 [2022-01-10 23:46:29,234 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 23:46:29,236 INFO L933 BasicCegarLoop]: 4910 mSDtfsCounter, 4833 mSDsluCounter, 3652 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4833 SdHoareTripleChecker+Valid, 8562 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:46:29,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4833 Valid, 8562 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:46:29,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30012 states. [2022-01-10 23:46:29,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30012 to 30006. [2022-01-10 23:46:29,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30006 states, 30001 states have (on average 1.8612379587347088) internal successors, (55839), 30005 states have internal predecessors, (55839), 0 states have call successors, (0), 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 23:46:30,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30006 states to 30006 states and 55839 transitions. [2022-01-10 23:46:30,009 INFO L78 Accepts]: Start accepts. Automaton has 30006 states and 55839 transitions. Word has length 65 [2022-01-10 23:46:30,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:46:30,009 INFO L470 AbstractCegarLoop]: Abstraction has 30006 states and 55839 transitions. [2022-01-10 23:46:30,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:46:30,009 INFO L276 IsEmpty]: Start isEmpty. Operand 30006 states and 55839 transitions. [2022-01-10 23:46:30,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 23:46:30,012 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:46:30,012 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] [2022-01-10 23:46:30,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:46:30,012 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:46:30,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:46:30,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1848075850, now seen corresponding path program 1 times [2022-01-10 23:46:30,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:46:30,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700205495] [2022-01-10 23:46:30,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:46:30,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:46:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:46:30,061 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 23:46:30,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:46:30,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700205495] [2022-01-10 23:46:30,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700205495] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:46:30,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:46:30,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:46:30,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663584739] [2022-01-10 23:46:30,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:46:30,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:46:30,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:46:30,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:46:30,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:46:30,063 INFO L87 Difference]: Start difference. First operand 30006 states and 55839 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:46:31,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:46:31,009 INFO L93 Difference]: Finished difference Result 78694 states and 146356 transitions. [2022-01-10 23:46:31,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:46:31,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 23:46:31,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:46:31,174 INFO L225 Difference]: With dead ends: 78694 [2022-01-10 23:46:31,174 INFO L226 Difference]: Without dead ends: 57510 [2022-01-10 23:46:31,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:46:31,206 INFO L933 BasicCegarLoop]: 4911 mSDtfsCounter, 4832 mSDsluCounter, 3655 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4832 SdHoareTripleChecker+Valid, 8566 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:46:31,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4832 Valid, 8566 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:46:31,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57510 states. [2022-01-10 23:46:32,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57510 to 57502. [2022-01-10 23:46:32,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57502 states, 57497 states have (on average 1.8608101292241335) internal successors, (106991), 57501 states have internal predecessors, (106991), 0 states have call successors, (0), 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 23:46:32,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57502 states to 57502 states and 106991 transitions. [2022-01-10 23:46:32,380 INFO L78 Accepts]: Start accepts. Automaton has 57502 states and 106991 transitions. Word has length 66 [2022-01-10 23:46:32,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:46:32,380 INFO L470 AbstractCegarLoop]: Abstraction has 57502 states and 106991 transitions. [2022-01-10 23:46:32,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:46:32,380 INFO L276 IsEmpty]: Start isEmpty. Operand 57502 states and 106991 transitions. [2022-01-10 23:46:32,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 23:46:32,397 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:46:32,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:46:32,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:46:32,398 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:46:32,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:46:32,398 INFO L85 PathProgramCache]: Analyzing trace with hash 346945443, now seen corresponding path program 1 times [2022-01-10 23:46:32,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:46:32,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106267356] [2022-01-10 23:46:32,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:46:32,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:46:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:46:32,472 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 23:46:32,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:46:32,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106267356] [2022-01-10 23:46:32,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106267356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:46:32,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:46:32,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:46:32,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615981079] [2022-01-10 23:46:32,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:46:32,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:46:32,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:46:32,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:46:32,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:46:32,475 INFO L87 Difference]: Start difference. First operand 57502 states and 106991 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 23:46:34,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:46:34,201 INFO L93 Difference]: Finished difference Result 117363 states and 218334 transitions. [2022-01-10 23:46:34,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:46:34,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-10 23:46:34,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:46:34,342 INFO L225 Difference]: With dead ends: 117363 [2022-01-10 23:46:34,342 INFO L226 Difference]: Without dead ends: 60904 [2022-01-10 23:46:34,393 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 23:46:34,396 INFO L933 BasicCegarLoop]: 5621 mSDtfsCounter, 3751 mSDsluCounter, 2484 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3751 SdHoareTripleChecker+Valid, 8105 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 23:46:34,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3751 Valid, 8105 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 23:46:34,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60904 states. [2022-01-10 23:46:35,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60904 to 57502. [2022-01-10 23:46:35,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57502 states, 57497 states have (on average 1.8372436822790754) internal successors, (105636), 57501 states have internal predecessors, (105636), 0 states have call successors, (0), 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 23:46:35,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57502 states to 57502 states and 105636 transitions. [2022-01-10 23:46:35,705 INFO L78 Accepts]: Start accepts. Automaton has 57502 states and 105636 transitions. Word has length 108 [2022-01-10 23:46:35,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:46:35,705 INFO L470 AbstractCegarLoop]: Abstraction has 57502 states and 105636 transitions. [2022-01-10 23:46:35,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 23:46:35,705 INFO L276 IsEmpty]: Start isEmpty. Operand 57502 states and 105636 transitions. [2022-01-10 23:46:35,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 23:46:35,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:46:35,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:46:35,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:46:35,724 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:46:35,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:46:35,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1487610028, now seen corresponding path program 1 times [2022-01-10 23:46:35,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:46:35,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812997003] [2022-01-10 23:46:35,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:46:35,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:46:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:46:35,780 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 23:46:35,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:46:35,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812997003] [2022-01-10 23:46:35,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812997003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:46:35,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:46:35,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:46:35,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529858709] [2022-01-10 23:46:35,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:46:35,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:46:35,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:46:35,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:46:35,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:46:35,782 INFO L87 Difference]: Start difference. First operand 57502 states and 105636 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 23:46:37,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:46:37,361 INFO L93 Difference]: Finished difference Result 119314 states and 219333 transitions. [2022-01-10 23:46:37,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:46:37,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-01-10 23:46:37,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:46:37,643 INFO L225 Difference]: With dead ends: 119314 [2022-01-10 23:46:37,643 INFO L226 Difference]: Without dead ends: 64141 [2022-01-10 23:46:37,673 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 23:46:37,674 INFO L933 BasicCegarLoop]: 6127 mSDtfsCounter, 3476 mSDsluCounter, 2802 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3476 SdHoareTripleChecker+Valid, 8929 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 23:46:37,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3476 Valid, 8929 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 23:46:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64141 states. [2022-01-10 23:46:38,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64141 to 57502. [2022-01-10 23:46:38,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57502 states, 57497 states have (on average 1.8169817555698557) internal successors, (104471), 57501 states have internal predecessors, (104471), 0 states have call successors, (0), 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 23:46:38,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57502 states to 57502 states and 104471 transitions. [2022-01-10 23:46:38,968 INFO L78 Accepts]: Start accepts. Automaton has 57502 states and 104471 transitions. Word has length 113 [2022-01-10 23:46:38,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:46:38,968 INFO L470 AbstractCegarLoop]: Abstraction has 57502 states and 104471 transitions. [2022-01-10 23:46:38,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 23:46:38,969 INFO L276 IsEmpty]: Start isEmpty. Operand 57502 states and 104471 transitions. [2022-01-10 23:46:38,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 23:46:38,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:46:38,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:46:38,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:46:38,987 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:46:38,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:46:38,987 INFO L85 PathProgramCache]: Analyzing trace with hash -998478688, now seen corresponding path program 1 times [2022-01-10 23:46:38,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:46:38,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318439180] [2022-01-10 23:46:38,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:46:38,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:46:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:46:39,036 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 23:46:39,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:46:39,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318439180] [2022-01-10 23:46:39,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318439180] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:46:39,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:46:39,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:46:39,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120481778] [2022-01-10 23:46:39,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:46:39,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:46:39,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:46:39,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:46:39,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:46:39,037 INFO L87 Difference]: Start difference. First operand 57502 states and 104471 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 23:46:40,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:46:40,664 INFO L93 Difference]: Finished difference Result 120938 states and 220265 transitions. [2022-01-10 23:46:40,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:46:40,664 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2022-01-10 23:46:40,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:46:40,790 INFO L225 Difference]: With dead ends: 120938 [2022-01-10 23:46:40,790 INFO L226 Difference]: Without dead ends: 68211 [2022-01-10 23:46:40,832 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 23:46:40,833 INFO L933 BasicCegarLoop]: 6525 mSDtfsCounter, 3323 mSDsluCounter, 3120 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3323 SdHoareTripleChecker+Valid, 9645 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 23:46:40,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3323 Valid, 9645 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 23:46:40,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68211 states. [2022-01-10 23:46:42,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68211 to 57502. [2022-01-10 23:46:42,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57502 states, 57497 states have (on average 1.8008939596848532) internal successors, (103546), 57501 states have internal predecessors, (103546), 0 states have call successors, (0), 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 23:46:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57502 states to 57502 states and 103546 transitions. [2022-01-10 23:46:42,350 INFO L78 Accepts]: Start accepts. Automaton has 57502 states and 103546 transitions. Word has length 117 [2022-01-10 23:46:42,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:46:42,350 INFO L470 AbstractCegarLoop]: Abstraction has 57502 states and 103546 transitions. [2022-01-10 23:46:42,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 23:46:42,350 INFO L276 IsEmpty]: Start isEmpty. Operand 57502 states and 103546 transitions. [2022-01-10 23:46:42,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 23:46:42,374 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:46:42,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:46:42,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:46:42,374 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:46:42,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:46:42,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1098449306, now seen corresponding path program 1 times [2022-01-10 23:46:42,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:46:42,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124520411] [2022-01-10 23:46:42,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:46:42,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:46:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:46:42,434 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 23:46:42,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:46:42,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124520411] [2022-01-10 23:46:42,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124520411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:46:42,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:46:42,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:46:42,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396368856] [2022-01-10 23:46:42,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:46:42,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:46:42,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:46:42,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:46:42,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:46:42,435 INFO L87 Difference]: Start difference. First operand 57502 states and 103546 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 23:46:44,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:46:44,582 INFO L93 Difference]: Finished difference Result 147688 states and 267527 transitions. [2022-01-10 23:46:44,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:46:44,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2022-01-10 23:46:44,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:46:44,757 INFO L225 Difference]: With dead ends: 147688 [2022-01-10 23:46:44,757 INFO L226 Difference]: Without dead ends: 98086 [2022-01-10 23:46:44,790 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 23:46:44,790 INFO L933 BasicCegarLoop]: 7406 mSDtfsCounter, 3058 mSDsluCounter, 3863 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3058 SdHoareTripleChecker+Valid, 11269 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 23:46:44,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3058 Valid, 11269 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 23:46:44,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98086 states. [2022-01-10 23:46:46,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98086 to 57187. [2022-01-10 23:46:46,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57187 states, 57182 states have (on average 1.7887796859151481) internal successors, (102286), 57186 states have internal predecessors, (102286), 0 states have call successors, (0), 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 23:46:46,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57187 states to 57187 states and 102286 transitions. [2022-01-10 23:46:46,256 INFO L78 Accepts]: Start accepts. Automaton has 57187 states and 102286 transitions. Word has length 120 [2022-01-10 23:46:46,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:46:46,256 INFO L470 AbstractCegarLoop]: Abstraction has 57187 states and 102286 transitions. [2022-01-10 23:46:46,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 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 23:46:46,256 INFO L276 IsEmpty]: Start isEmpty. Operand 57187 states and 102286 transitions. [2022-01-10 23:46:46,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 23:46:46,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:46:46,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:46:46,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:46:46,276 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:46:46,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:46:46,276 INFO L85 PathProgramCache]: Analyzing trace with hash 585844771, now seen corresponding path program 1 times [2022-01-10 23:46:46,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:46:46,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023496789] [2022-01-10 23:46:46,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:46:46,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:46:46,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:46:46,328 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 23:46:46,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:46:46,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023496789] [2022-01-10 23:46:46,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023496789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:46:46,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:46:46,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:46:46,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854178062] [2022-01-10 23:46:46,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:46:46,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:46:46,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:46:46,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:46:46,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:46:46,329 INFO L87 Difference]: Start difference. First operand 57187 states and 102286 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 23:46:48,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:46:48,179 INFO L93 Difference]: Finished difference Result 118252 states and 213226 transitions. [2022-01-10 23:46:48,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:46:48,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-01-10 23:46:48,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:46:48,310 INFO L225 Difference]: With dead ends: 118252 [2022-01-10 23:46:48,310 INFO L226 Difference]: Without dead ends: 72651 [2022-01-10 23:46:48,348 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 23:46:48,349 INFO L933 BasicCegarLoop]: 6963 mSDtfsCounter, 2782 mSDsluCounter, 3756 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2782 SdHoareTripleChecker+Valid, 10719 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 23:46:48,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2782 Valid, 10719 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 23:46:48,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72651 states. [2022-01-10 23:46:49,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72651 to 57187. [2022-01-10 23:46:49,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57187 states, 57182 states have (on average 1.7775873526634256) internal successors, (101646), 57186 states have internal predecessors, (101646), 0 states have call successors, (0), 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 23:46:49,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57187 states to 57187 states and 101646 transitions. [2022-01-10 23:46:49,737 INFO L78 Accepts]: Start accepts. Automaton has 57187 states and 101646 transitions. Word has length 121 [2022-01-10 23:46:49,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:46:49,738 INFO L470 AbstractCegarLoop]: Abstraction has 57187 states and 101646 transitions. [2022-01-10 23:46:49,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 23:46:49,738 INFO L276 IsEmpty]: Start isEmpty. Operand 57187 states and 101646 transitions. [2022-01-10 23:46:49,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 23:46:49,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:46:49,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:46:49,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:46:49,750 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:46:49,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:46:49,751 INFO L85 PathProgramCache]: Analyzing trace with hash 295027403, now seen corresponding path program 1 times [2022-01-10 23:46:49,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:46:49,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930974976] [2022-01-10 23:46:49,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:46:49,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:46:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:46:49,816 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 23:46:49,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:46:49,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930974976] [2022-01-10 23:46:49,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930974976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:46:49,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:46:49,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:46:49,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889027466] [2022-01-10 23:46:49,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:46:49,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:46:49,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:46:49,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:46:49,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:46:49,817 INFO L87 Difference]: Start difference. First operand 57187 states and 101646 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 23:46:52,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:46:52,246 INFO L93 Difference]: Finished difference Result 171461 states and 304818 transitions. [2022-01-10 23:46:52,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:46:52,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-01-10 23:46:52,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:46:52,479 INFO L225 Difference]: With dead ends: 171461 [2022-01-10 23:46:52,479 INFO L226 Difference]: Without dead ends: 114303 [2022-01-10 23:46:52,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:46:52,531 INFO L933 BasicCegarLoop]: 9372 mSDtfsCounter, 14062 mSDsluCounter, 4705 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14062 SdHoareTripleChecker+Valid, 14077 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:46:52,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14062 Valid, 14077 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:46:52,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114303 states. [2022-01-10 23:46:54,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114303 to 57166. [2022-01-10 23:46:54,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57166 states, 57161 states have (on average 1.7777505641958677) internal successors, (101618), 57165 states have internal predecessors, (101618), 0 states have call successors, (0), 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 23:46:54,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57166 states to 57166 states and 101618 transitions. [2022-01-10 23:46:54,578 INFO L78 Accepts]: Start accepts. Automaton has 57166 states and 101618 transitions. Word has length 122 [2022-01-10 23:46:54,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:46:54,578 INFO L470 AbstractCegarLoop]: Abstraction has 57166 states and 101618 transitions. [2022-01-10 23:46:54,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 23:46:54,579 INFO L276 IsEmpty]: Start isEmpty. Operand 57166 states and 101618 transitions. [2022-01-10 23:46:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-10 23:46:54,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:46:54,591 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:46:54,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:46:54,591 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:46:54,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:46:54,592 INFO L85 PathProgramCache]: Analyzing trace with hash 36381522, now seen corresponding path program 1 times [2022-01-10 23:46:54,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:46:54,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613636402] [2022-01-10 23:46:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:46:54,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:46:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:46:54,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:46:54,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:46:54,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613636402] [2022-01-10 23:46:54,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613636402] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:46:54,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:46:54,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:46:54,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38499288] [2022-01-10 23:46:54,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:46:54,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:46:54,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:46:54,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:46:54,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:46:54,656 INFO L87 Difference]: Start difference. First operand 57166 states and 101618 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 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 23:46:56,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:46:56,200 INFO L93 Difference]: Finished difference Result 114303 states and 203204 transitions. [2022-01-10 23:46:56,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:46:56,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2022-01-10 23:46:56,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:46:56,303 INFO L225 Difference]: With dead ends: 114303 [2022-01-10 23:46:56,303 INFO L226 Difference]: Without dead ends: 57160 [2022-01-10 23:46:56,335 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 23:46:56,336 INFO L933 BasicCegarLoop]: 4693 mSDtfsCounter, 9365 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9365 SdHoareTripleChecker+Valid, 4719 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 23:46:56,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9365 Valid, 4719 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:46:56,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57160 states. [2022-01-10 23:46:57,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57160 to 57160. [2022-01-10 23:46:57,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57160 states, 57155 states have (on average 1.7777972180911557) internal successors, (101610), 57159 states have internal predecessors, (101610), 0 states have call successors, (0), 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 23:46:58,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57160 states to 57160 states and 101610 transitions. [2022-01-10 23:46:58,029 INFO L78 Accepts]: Start accepts. Automaton has 57160 states and 101610 transitions. Word has length 124 [2022-01-10 23:46:58,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:46:58,029 INFO L470 AbstractCegarLoop]: Abstraction has 57160 states and 101610 transitions. [2022-01-10 23:46:58,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 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 23:46:58,029 INFO L276 IsEmpty]: Start isEmpty. Operand 57160 states and 101610 transitions. [2022-01-10 23:46:58,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-10 23:46:58,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:46:58,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:46:58,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:46:58,043 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:46:58,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:46:58,043 INFO L85 PathProgramCache]: Analyzing trace with hash -981903809, now seen corresponding path program 1 times [2022-01-10 23:46:58,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:46:58,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239038769] [2022-01-10 23:46:58,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:46:58,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:46:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:46:58,120 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 23:46:58,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:46:58,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239038769] [2022-01-10 23:46:58,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239038769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:46:58,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:46:58,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:46:58,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072447889] [2022-01-10 23:46:58,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:46:58,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:46:58,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:46:58,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:46:58,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:46:58,123 INFO L87 Difference]: Start difference. First operand 57160 states and 101610 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 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 23:46:59,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:46:59,756 INFO L93 Difference]: Finished difference Result 114291 states and 203185 transitions. [2022-01-10 23:46:59,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:46:59,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2022-01-10 23:46:59,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:46:59,860 INFO L225 Difference]: With dead ends: 114291 [2022-01-10 23:46:59,860 INFO L226 Difference]: Without dead ends: 57160 [2022-01-10 23:46:59,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:46:59,891 INFO L933 BasicCegarLoop]: 4684 mSDtfsCounter, 9352 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9352 SdHoareTripleChecker+Valid, 4734 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:46:59,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9352 Valid, 4734 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:46:59,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57160 states. [2022-01-10 23:47:01,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57160 to 57160. [2022-01-10 23:47:01,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57160 states, 57155 states have (on average 1.7777797218091156) internal successors, (101609), 57159 states have internal predecessors, (101609), 0 states have call successors, (0), 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 23:47:01,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57160 states to 57160 states and 101609 transitions. [2022-01-10 23:47:01,578 INFO L78 Accepts]: Start accepts. Automaton has 57160 states and 101609 transitions. Word has length 125 [2022-01-10 23:47:01,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:47:01,578 INFO L470 AbstractCegarLoop]: Abstraction has 57160 states and 101609 transitions. [2022-01-10 23:47:01,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 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 23:47:01,578 INFO L276 IsEmpty]: Start isEmpty. Operand 57160 states and 101609 transitions. [2022-01-10 23:47:01,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-10 23:47:01,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:47:01,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:47:01,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:47:01,591 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:47:01,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:47:01,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1630914872, now seen corresponding path program 1 times [2022-01-10 23:47:01,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:47:01,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512426730] [2022-01-10 23:47:01,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:47:01,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:47:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:47:01,659 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 23:47:01,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:47:01,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512426730] [2022-01-10 23:47:01,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512426730] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:47:01,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:47:01,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:47:01,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593608572] [2022-01-10 23:47:01,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:47:01,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:47:01,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:47:01,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:47:01,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:47:01,660 INFO L87 Difference]: Start difference. First operand 57160 states and 101609 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 23:47:04,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:47:04,967 INFO L93 Difference]: Finished difference Result 165169 states and 292786 transitions. [2022-01-10 23:47:04,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:47:04,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 126 [2022-01-10 23:47:04,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:47:05,157 INFO L225 Difference]: With dead ends: 165169 [2022-01-10 23:47:05,157 INFO L226 Difference]: Without dead ends: 108046 [2022-01-10 23:47:05,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:47:05,204 INFO L933 BasicCegarLoop]: 4719 mSDtfsCounter, 12545 mSDsluCounter, 3980 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12545 SdHoareTripleChecker+Valid, 8699 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 23:47:05,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12545 Valid, 8699 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 23:47:05,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108046 states. [2022-01-10 23:47:07,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108046 to 57160. [2022-01-10 23:47:07,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57160 states, 57155 states have (on average 1.7593736331029657) internal successors, (100557), 57159 states have internal predecessors, (100557), 0 states have call successors, (0), 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 23:47:07,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57160 states to 57160 states and 100557 transitions. [2022-01-10 23:47:07,434 INFO L78 Accepts]: Start accepts. Automaton has 57160 states and 100557 transitions. Word has length 126 [2022-01-10 23:47:07,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:47:07,434 INFO L470 AbstractCegarLoop]: Abstraction has 57160 states and 100557 transitions. [2022-01-10 23:47:07,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 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 23:47:07,434 INFO L276 IsEmpty]: Start isEmpty. Operand 57160 states and 100557 transitions. [2022-01-10 23:47:07,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 23:47:07,446 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:47:07,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:47:07,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 23:47:07,446 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:47:07,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:47:07,446 INFO L85 PathProgramCache]: Analyzing trace with hash -580692312, now seen corresponding path program 1 times [2022-01-10 23:47:07,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:47:07,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6125399] [2022-01-10 23:47:07,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:47:07,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:47:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:47:07,505 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 23:47:07,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:47:07,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6125399] [2022-01-10 23:47:07,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6125399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:47:07,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:47:07,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:47:07,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526608422] [2022-01-10 23:47:07,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:47:07,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:47:07,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:47:07,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:47:07,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:47:07,506 INFO L87 Difference]: Start difference. First operand 57160 states and 100557 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)