/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_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec11_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:10:51,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:10:51,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:10:51,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:10:51,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:10:51,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:10:51,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:10:51,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:10:51,390 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:10:51,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:10:51,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:10:51,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:10:51,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:10:51,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:10:51,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:10:51,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:10:51,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:10:51,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:10:51,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:10:51,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:10:51,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:10:51,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:10:51,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:10:51,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:10:51,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:10:51,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:10:51,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:10:51,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:10:51,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:10:51,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:10:51,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:10:51,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:10:51,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:10:51,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:10:51,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:10:51,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:10:51,419 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:10:51,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:10:51,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:10:51,420 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:10:51,421 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:10:51,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:10:51,446 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:10:51,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:10:51,447 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:10:51,447 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:10:51,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:10:51,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:10:51,448 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:10:51,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:10:51,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:10:51,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:10:51,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:10:51,449 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:10:51,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:10:51,449 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:10:51,449 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:10:51,449 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:10:51,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:10:51,450 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:10:51,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:10:51,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:10:51,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:10:51,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:10:51,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:10:51,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:10:51,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:10:51,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:10:51,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:10:51,451 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:10:51,451 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:10:51,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:10:51,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:10:51,451 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:10:51,452 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:10:51,452 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:10:51,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:10:51,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:10:51,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:10:51,684 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:10:51,685 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:10:51,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product15.cil.c [2022-01-10 12:10:51,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b33dfec7/927b408ed70e4df0a59df2248268ea63/FLAG5cb188d61 [2022-01-10 12:10:52,245 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:10:52,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product15.cil.c [2022-01-10 12:10:52,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b33dfec7/927b408ed70e4df0a59df2248268ea63/FLAG5cb188d61 [2022-01-10 12:10:52,571 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b33dfec7/927b408ed70e4df0a59df2248268ea63 [2022-01-10 12:10:52,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:10:52,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:10:52,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:10:52,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:10:52,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:10:52,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:10:52" (1/1) ... [2022-01-10 12:10:52,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fadaeb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:52, skipping insertion in model container [2022-01-10 12:10:52,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:10:52" (1/1) ... [2022-01-10 12:10:52,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:10:52,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:10:53,011 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product15.cil.c[45629,45642] [2022-01-10 12:10:53,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:10:53,085 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:10:53,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:10:53,148 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product15.cil.c[45629,45642] [2022-01-10 12:10:53,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:10:53,202 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:10:53,285 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product15.cil.c[45629,45642] [2022-01-10 12:10:53,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:10:53,349 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:10:53,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:53 WrapperNode [2022-01-10 12:10:53,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:10:53,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:10:53,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:10:53,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:10:53,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:53" (1/1) ... [2022-01-10 12:10:53,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:53" (1/1) ... [2022-01-10 12:10:53,488 INFO L137 Inliner]: procedures = 127, calls = 195, calls flagged for inlining = 109, calls inlined = 129, statements flattened = 1880 [2022-01-10 12:10:53,488 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:10:53,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:10:53,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:10:53,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:10:53,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:53" (1/1) ... [2022-01-10 12:10:53,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:53" (1/1) ... [2022-01-10 12:10:53,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:53" (1/1) ... [2022-01-10 12:10:53,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:53" (1/1) ... [2022-01-10 12:10:53,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:53" (1/1) ... [2022-01-10 12:10:53,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:53" (1/1) ... [2022-01-10 12:10:53,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:53" (1/1) ... [2022-01-10 12:10:53,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:10:53,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:10:53,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:10:53,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:10:53,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:53" (1/1) ... [2022-01-10 12:10:53,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:10:53,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:10:53,638 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 12:10:53,671 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 12:10:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:10:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:10:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:10:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:10:53,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:10:53,931 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:10:53,932 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:10:54,925 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:10:54,933 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:10:54,933 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:10:54,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:10:54 BoogieIcfgContainer [2022-01-10 12:10:54,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:10:54,936 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:10:54,936 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:10:54,937 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:10:54,939 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:10:54" (1/1) ... [2022-01-10 12:10:55,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:10:55 BasicIcfg [2022-01-10 12:10:55,157 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:10:55,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:10:55,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:10:55,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:10:55,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:10:52" (1/4) ... [2022-01-10 12:10:55,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@551286c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:10:55, skipping insertion in model container [2022-01-10 12:10:55,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:10:53" (2/4) ... [2022-01-10 12:10:55,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@551286c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:10:55, skipping insertion in model container [2022-01-10 12:10:55,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:10:54" (3/4) ... [2022-01-10 12:10:55,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@551286c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:10:55, skipping insertion in model container [2022-01-10 12:10:55,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:10:55" (4/4) ... [2022-01-10 12:10:55,162 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product15.cil.cTransformedIcfg [2022-01-10 12:10:55,166 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:10:55,166 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 12:10:55,229 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:10:55,237 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 12:10:55,238 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 12:10:55,261 INFO L276 IsEmpty]: Start isEmpty. Operand has 448 states, 445 states have (on average 1.6921348314606741) internal successors, (753), 447 states have internal predecessors, (753), 0 states have call successors, (0), 0 states 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 12:10:55,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 12:10:55,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:55,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:10:55,278 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:55,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:55,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1632780656, now seen corresponding path program 1 times [2022-01-10 12:10:55,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:55,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199174821] [2022-01-10 12:10:55,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:55,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:55,634 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 12:10:55,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:55,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199174821] [2022-01-10 12:10:55,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199174821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:55,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:55,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:10:55,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522432144] [2022-01-10 12:10:55,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:55,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:10:55,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:55,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:10:55,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:10:55,666 INFO L87 Difference]: Start difference. First operand has 448 states, 445 states have (on average 1.6921348314606741) internal successors, (753), 447 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:55,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:55,712 INFO L93 Difference]: Finished difference Result 635 states and 1046 transitions. [2022-01-10 12:10:55,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:10:55,718 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 12:10:55,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:55,732 INFO L225 Difference]: With dead ends: 635 [2022-01-10 12:10:55,732 INFO L226 Difference]: Without dead ends: 426 [2022-01-10 12:10:55,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:10:55,738 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:55,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:10:55,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-01-10 12:10:55,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2022-01-10 12:10:55,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 424 states have (on average 1.6981132075471699) internal successors, (720), 425 states have internal predecessors, (720), 0 states have call successors, (0), 0 states 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 12:10:55,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 720 transitions. [2022-01-10 12:10:55,780 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 720 transitions. Word has length 60 [2022-01-10 12:10:55,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:55,780 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 720 transitions. [2022-01-10 12:10:55,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:55,781 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 720 transitions. [2022-01-10 12:10:55,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 12:10:55,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:55,782 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 12:10:55,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:10:55,783 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:55,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:55,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1003486648, now seen corresponding path program 1 times [2022-01-10 12:10:55,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:55,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569955608] [2022-01-10 12:10:55,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:55,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:56,025 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 12:10:56,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:56,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569955608] [2022-01-10 12:10:56,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569955608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:56,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:56,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:10:56,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212234482] [2022-01-10 12:10:56,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:56,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:10:56,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:56,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:10:56,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:10:56,027 INFO L87 Difference]: Start difference. First operand 426 states and 720 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 12:10:56,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:56,114 INFO L93 Difference]: Finished difference Result 833 states and 1412 transitions. [2022-01-10 12:10:56,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:10:56,115 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 12:10:56,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:56,117 INFO L225 Difference]: With dead ends: 833 [2022-01-10 12:10:56,117 INFO L226 Difference]: Without dead ends: 426 [2022-01-10 12:10:56,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:10:56,119 INFO L933 BasicCegarLoop]: 701 mSDtfsCounter, 695 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:56,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 714 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:10:56,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-01-10 12:10:56,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2022-01-10 12:10:56,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 424 states have (on average 1.6933962264150944) internal successors, (718), 425 states have internal predecessors, (718), 0 states have call successors, (0), 0 states 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 12:10:56,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 718 transitions. [2022-01-10 12:10:56,136 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 718 transitions. Word has length 61 [2022-01-10 12:10:56,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:56,136 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 718 transitions. [2022-01-10 12:10:56,137 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 12:10:56,137 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 718 transitions. [2022-01-10 12:10:56,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:10:56,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:56,138 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 12:10:56,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:10:56,138 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:56,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:56,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1954602120, now seen corresponding path program 1 times [2022-01-10 12:10:56,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:56,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465979251] [2022-01-10 12:10:56,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:56,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:56,228 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 12:10:56,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:56,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465979251] [2022-01-10 12:10:56,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465979251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:56,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:56,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:10:56,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822984970] [2022-01-10 12:10:56,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:56,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:10:56,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:56,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:10:56,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:10:56,230 INFO L87 Difference]: Start difference. First operand 426 states and 718 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 12:10:56,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:56,399 INFO L93 Difference]: Finished difference Result 1998 states and 3386 transitions. [2022-01-10 12:10:56,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:10:56,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 12:10:56,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:56,405 INFO L225 Difference]: With dead ends: 1998 [2022-01-10 12:10:56,405 INFO L226 Difference]: Without dead ends: 1596 [2022-01-10 12:10:56,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:10:56,409 INFO L933 BasicCegarLoop]: 1359 mSDtfsCounter, 3373 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3373 SdHoareTripleChecker+Valid, 3385 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:56,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3373 Valid, 3385 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:10:56,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1596 states. [2022-01-10 12:10:56,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1596 to 426. [2022-01-10 12:10:56,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 424 states have (on average 1.6910377358490567) internal successors, (717), 425 states have internal predecessors, (717), 0 states have call successors, (0), 0 states 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 12:10:56,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 717 transitions. [2022-01-10 12:10:56,441 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 717 transitions. Word has length 63 [2022-01-10 12:10:56,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:56,442 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 717 transitions. [2022-01-10 12:10:56,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 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 12:10:56,442 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 717 transitions. [2022-01-10 12:10:56,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:10:56,443 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:56,443 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 12:10:56,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:10:56,443 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:56,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:56,444 INFO L85 PathProgramCache]: Analyzing trace with hash 622733654, now seen corresponding path program 1 times [2022-01-10 12:10:56,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:56,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549243947] [2022-01-10 12:10:56,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:56,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:56,533 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 12:10:56,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:56,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549243947] [2022-01-10 12:10:56,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549243947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:56,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:56,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:10:56,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591261602] [2022-01-10 12:10:56,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:56,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:10:56,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:56,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:10:56,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:10:56,534 INFO L87 Difference]: Start difference. First operand 426 states and 717 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 12:10:56,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:56,567 INFO L93 Difference]: Finished difference Result 837 states and 1412 transitions. [2022-01-10 12:10:56,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:10:56,568 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 12:10:56,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:56,569 INFO L225 Difference]: With dead ends: 837 [2022-01-10 12:10:56,569 INFO L226 Difference]: Without dead ends: 440 [2022-01-10 12:10:56,570 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 12:10:56,571 INFO L933 BasicCegarLoop]: 731 mSDtfsCounter, 696 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:56,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 753 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:10:56,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-01-10 12:10:56,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 426. [2022-01-10 12:10:56,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 424 states have (on average 1.6886792452830188) internal successors, (716), 425 states have internal predecessors, (716), 0 states have call successors, (0), 0 states 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 12:10:56,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 716 transitions. [2022-01-10 12:10:56,588 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 716 transitions. Word has length 64 [2022-01-10 12:10:56,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:56,588 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 716 transitions. [2022-01-10 12:10:56,588 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 12:10:56,588 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 716 transitions. [2022-01-10 12:10:56,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:10:56,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:56,589 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 12:10:56,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:10:56,590 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:56,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:56,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1750657385, now seen corresponding path program 1 times [2022-01-10 12:10:56,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:56,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925040903] [2022-01-10 12:10:56,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:56,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:56,664 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 12:10:56,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:56,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925040903] [2022-01-10 12:10:56,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925040903] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:56,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:56,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:10:56,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664781920] [2022-01-10 12:10:56,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:56,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:10:56,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:56,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:10:56,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:10:56,666 INFO L87 Difference]: Start difference. First operand 426 states and 716 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:56,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:56,780 INFO L93 Difference]: Finished difference Result 1212 states and 2048 transitions. [2022-01-10 12:10:56,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:10:56,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 12:10:56,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:56,783 INFO L225 Difference]: With dead ends: 1212 [2022-01-10 12:10:56,783 INFO L226 Difference]: Without dead ends: 820 [2022-01-10 12:10:56,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:10:56,784 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 3296 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3296 SdHoareTripleChecker+Valid, 1464 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:56,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3296 Valid, 1464 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:10:56,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2022-01-10 12:10:56,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 426. [2022-01-10 12:10:56,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 424 states have (on average 1.6839622641509433) internal successors, (714), 425 states have internal predecessors, (714), 0 states have call successors, (0), 0 states 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 12:10:56,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 714 transitions. [2022-01-10 12:10:56,807 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 714 transitions. Word has length 65 [2022-01-10 12:10:56,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:56,807 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 714 transitions. [2022-01-10 12:10:56,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:56,807 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 714 transitions. [2022-01-10 12:10:56,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:10:56,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:56,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:10:56,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:10:56,808 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:56,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:56,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1269155578, now seen corresponding path program 1 times [2022-01-10 12:10:56,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:56,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923421061] [2022-01-10 12:10:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:56,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:56,937 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 12:10:56,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:56,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923421061] [2022-01-10 12:10:56,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923421061] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:56,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:56,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:10:56,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162838251] [2022-01-10 12:10:56,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:56,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:10:56,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:56,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:10:56,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:10:56,939 INFO L87 Difference]: Start difference. First operand 426 states and 714 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:57,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:57,403 INFO L93 Difference]: Finished difference Result 1864 states and 2969 transitions. [2022-01-10 12:10:57,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:10:57,404 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 12:10:57,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:57,409 INFO L225 Difference]: With dead ends: 1864 [2022-01-10 12:10:57,410 INFO L226 Difference]: Without dead ends: 1717 [2022-01-10 12:10:57,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:10:57,411 INFO L933 BasicCegarLoop]: 908 mSDtfsCounter, 5839 mSDsluCounter, 5210 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5839 SdHoareTripleChecker+Valid, 6118 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:57,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5839 Valid, 6118 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:10:57,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2022-01-10 12:10:57,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 749. [2022-01-10 12:10:57,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 747 states have (on average 1.7028112449799198) internal successors, (1272), 748 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states 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 12:10:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1272 transitions. [2022-01-10 12:10:57,496 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1272 transitions. Word has length 67 [2022-01-10 12:10:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:57,497 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 1272 transitions. [2022-01-10 12:10:57,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:57,497 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1272 transitions. [2022-01-10 12:10:57,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:10:57,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:57,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:10:57,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:10:57,498 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:57,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:57,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1148703559, now seen corresponding path program 1 times [2022-01-10 12:10:57,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:57,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372352787] [2022-01-10 12:10:57,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:57,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:57,599 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 12:10:57,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:57,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372352787] [2022-01-10 12:10:57,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372352787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:57,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:57,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:10:57,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109826775] [2022-01-10 12:10:57,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:57,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:10:57,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:57,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:10:57,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:10:57,601 INFO L87 Difference]: Start difference. First operand 749 states and 1272 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:57,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:57,852 INFO L93 Difference]: Finished difference Result 1890 states and 3098 transitions. [2022-01-10 12:10:57,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:10:57,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 12:10:57,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:57,857 INFO L225 Difference]: With dead ends: 1890 [2022-01-10 12:10:57,858 INFO L226 Difference]: Without dead ends: 1664 [2022-01-10 12:10:57,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:10:57,859 INFO L933 BasicCegarLoop]: 924 mSDtfsCounter, 1571 mSDsluCounter, 2283 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 3207 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:57,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1571 Valid, 3207 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:10:57,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2022-01-10 12:10:57,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1168. [2022-01-10 12:10:57,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1168 states, 1166 states have (on average 1.6981132075471699) internal successors, (1980), 1167 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states 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 12:10:57,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1980 transitions. [2022-01-10 12:10:57,946 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1980 transitions. Word has length 68 [2022-01-10 12:10:57,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:57,946 INFO L470 AbstractCegarLoop]: Abstraction has 1168 states and 1980 transitions. [2022-01-10 12:10:57,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:57,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1980 transitions. [2022-01-10 12:10:57,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:10:57,948 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:57,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:10:57,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:10:57,948 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:57,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:57,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1069054394, now seen corresponding path program 1 times [2022-01-10 12:10:57,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:57,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905257315] [2022-01-10 12:10:57,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:57,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:58,030 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 12:10:58,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:58,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905257315] [2022-01-10 12:10:58,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905257315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:58,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:58,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:10:58,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499595005] [2022-01-10 12:10:58,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:58,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:10:58,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:58,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:10:58,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:10:58,032 INFO L87 Difference]: Start difference. First operand 1168 states and 1980 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:58,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:58,476 INFO L93 Difference]: Finished difference Result 5294 states and 8853 transitions. [2022-01-10 12:10:58,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:10:58,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 12:10:58,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:58,491 INFO L225 Difference]: With dead ends: 5294 [2022-01-10 12:10:58,491 INFO L226 Difference]: Without dead ends: 5072 [2022-01-10 12:10:58,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:10:58,494 INFO L933 BasicCegarLoop]: 842 mSDtfsCounter, 3495 mSDsluCounter, 3592 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3495 SdHoareTripleChecker+Valid, 4434 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:58,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3495 Valid, 4434 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:10:58,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5072 states. [2022-01-10 12:10:58,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5072 to 2292. [2022-01-10 12:10:58,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 2290 states have (on average 1.6991266375545853) internal successors, (3891), 2291 states have internal predecessors, (3891), 0 states have call successors, (0), 0 states 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 12:10:58,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3891 transitions. [2022-01-10 12:10:58,680 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3891 transitions. Word has length 68 [2022-01-10 12:10:58,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:58,680 INFO L470 AbstractCegarLoop]: Abstraction has 2292 states and 3891 transitions. [2022-01-10 12:10:58,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:58,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3891 transitions. [2022-01-10 12:10:58,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:10:58,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:10:58,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:10:58,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:10:58,686 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:10:58,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:10:58,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1184595289, now seen corresponding path program 1 times [2022-01-10 12:10:58,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:10:58,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301930596] [2022-01-10 12:10:58,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:10:58,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:10:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:10:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:10:58,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:10:58,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301930596] [2022-01-10 12:10:58,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301930596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:10:58,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:10:58,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:10:58,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158571325] [2022-01-10 12:10:58,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:10:58,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:10:58,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:10:58,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:10:58,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:10:58,792 INFO L87 Difference]: Start difference. First operand 2292 states and 3891 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:59,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:10:59,676 INFO L93 Difference]: Finished difference Result 10320 states and 17295 transitions. [2022-01-10 12:10:59,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:10:59,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 12:10:59,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:10:59,703 INFO L225 Difference]: With dead ends: 10320 [2022-01-10 12:10:59,704 INFO L226 Difference]: Without dead ends: 9914 [2022-01-10 12:10:59,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:10:59,706 INFO L933 BasicCegarLoop]: 882 mSDtfsCounter, 3327 mSDsluCounter, 2928 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3327 SdHoareTripleChecker+Valid, 3810 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:10:59,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3327 Valid, 3810 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:10:59,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9914 states. [2022-01-10 12:10:59,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9914 to 4517. [2022-01-10 12:10:59,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4517 states, 4515 states have (on average 1.7016611295681063) internal successors, (7683), 4516 states have internal predecessors, (7683), 0 states have call successors, (0), 0 states 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 12:10:59,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 7683 transitions. [2022-01-10 12:10:59,997 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 7683 transitions. Word has length 69 [2022-01-10 12:10:59,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:10:59,998 INFO L470 AbstractCegarLoop]: Abstraction has 4517 states and 7683 transitions. [2022-01-10 12:10:59,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:10:59,998 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 7683 transitions. [2022-01-10 12:11:00,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:11:00,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:00,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:11:00,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:11:00,004 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:11:00,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:00,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1825819376, now seen corresponding path program 1 times [2022-01-10 12:11:00,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:00,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137186501] [2022-01-10 12:11:00,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:00,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:00,061 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 12:11:00,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:00,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137186501] [2022-01-10 12:11:00,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137186501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:00,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:00,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:11:00,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823315578] [2022-01-10 12:11:00,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:00,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:11:00,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:00,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:11:00,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:11:00,063 INFO L87 Difference]: Start difference. First operand 4517 states and 7683 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:00,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:00,677 INFO L93 Difference]: Finished difference Result 13259 states and 22613 transitions. [2022-01-10 12:11:00,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:11:00,677 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 12:11:00,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:00,703 INFO L225 Difference]: With dead ends: 13259 [2022-01-10 12:11:00,703 INFO L226 Difference]: Without dead ends: 8792 [2022-01-10 12:11:00,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:11:00,709 INFO L933 BasicCegarLoop]: 1331 mSDtfsCounter, 2079 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2079 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:11:00,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2079 Valid, 1998 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:11:00,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8792 states. [2022-01-10 12:11:01,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8792 to 4517. [2022-01-10 12:11:01,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4517 states, 4515 states have (on average 1.701218161683278) internal successors, (7681), 4516 states have internal predecessors, (7681), 0 states have call successors, (0), 0 states 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 12:11:01,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4517 states to 4517 states and 7681 transitions. [2022-01-10 12:11:01,056 INFO L78 Accepts]: Start accepts. Automaton has 4517 states and 7681 transitions. Word has length 69 [2022-01-10 12:11:01,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:01,056 INFO L470 AbstractCegarLoop]: Abstraction has 4517 states and 7681 transitions. [2022-01-10 12:11:01,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:01,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4517 states and 7681 transitions. [2022-01-10 12:11:01,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:11:01,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:01,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:11:01,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:11:01,065 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:11:01,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:01,066 INFO L85 PathProgramCache]: Analyzing trace with hash -722202832, now seen corresponding path program 1 times [2022-01-10 12:11:01,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:01,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153010359] [2022-01-10 12:11:01,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:01,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:01,199 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 12:11:01,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:01,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153010359] [2022-01-10 12:11:01,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153010359] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:01,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:01,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:11:01,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465910023] [2022-01-10 12:11:01,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:01,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:11:01,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:01,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:11:01,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:11:01,201 INFO L87 Difference]: Start difference. First operand 4517 states and 7681 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:03,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:03,370 INFO L93 Difference]: Finished difference Result 20317 states and 34119 transitions. [2022-01-10 12:11:03,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:11:03,378 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 12:11:03,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:03,483 INFO L225 Difference]: With dead ends: 20317 [2022-01-10 12:11:03,483 INFO L226 Difference]: Without dead ends: 19546 [2022-01-10 12:11:03,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:11:03,490 INFO L933 BasicCegarLoop]: 888 mSDtfsCounter, 3265 mSDsluCounter, 2966 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3265 SdHoareTripleChecker+Valid, 3854 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:11:03,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3265 Valid, 3854 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:11:03,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19546 states. [2022-01-10 12:11:04,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19546 to 8928. [2022-01-10 12:11:04,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8928 states, 8926 states have (on average 1.7050190454850997) internal successors, (15219), 8927 states have internal predecessors, (15219), 0 states have call successors, (0), 0 states 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 12:11:04,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8928 states to 8928 states and 15219 transitions. [2022-01-10 12:11:04,394 INFO L78 Accepts]: Start accepts. Automaton has 8928 states and 15219 transitions. Word has length 70 [2022-01-10 12:11:04,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:04,394 INFO L470 AbstractCegarLoop]: Abstraction has 8928 states and 15219 transitions. [2022-01-10 12:11:04,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:04,395 INFO L276 IsEmpty]: Start isEmpty. Operand 8928 states and 15219 transitions. [2022-01-10 12:11:04,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:11:04,406 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:04,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:11:04,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:11:04,406 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:11:04,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:04,407 INFO L85 PathProgramCache]: Analyzing trace with hash 785348977, now seen corresponding path program 1 times [2022-01-10 12:11:04,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:04,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743438349] [2022-01-10 12:11:04,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:04,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:04,508 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 12:11:04,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:04,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743438349] [2022-01-10 12:11:04,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743438349] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:04,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:04,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:11:04,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302199744] [2022-01-10 12:11:04,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:04,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:11:04,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:04,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:11:04,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:11:04,510 INFO L87 Difference]: Start difference. First operand 8928 states and 15219 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:06,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:06,279 INFO L93 Difference]: Finished difference Result 21220 states and 35174 transitions. [2022-01-10 12:11:06,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:11:06,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 12:11:06,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:06,322 INFO L225 Difference]: With dead ends: 21220 [2022-01-10 12:11:06,323 INFO L226 Difference]: Without dead ends: 19972 [2022-01-10 12:11:06,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:11:06,331 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1275 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:11:06,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1275 Valid, 2778 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:11:06,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19972 states. [2022-01-10 12:11:07,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19972 to 17807. [2022-01-10 12:11:07,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17807 states, 17805 states have (on average 1.7054198258916036) internal successors, (30365), 17806 states have internal predecessors, (30365), 0 states have call successors, (0), 0 states 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 12:11:07,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17807 states to 17807 states and 30365 transitions. [2022-01-10 12:11:07,807 INFO L78 Accepts]: Start accepts. Automaton has 17807 states and 30365 transitions. Word has length 70 [2022-01-10 12:11:07,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:07,807 INFO L470 AbstractCegarLoop]: Abstraction has 17807 states and 30365 transitions. [2022-01-10 12:11:07,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:07,808 INFO L276 IsEmpty]: Start isEmpty. Operand 17807 states and 30365 transitions. [2022-01-10 12:11:07,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 12:11:07,830 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:07,830 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:11:07,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:11:07,830 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:11:07,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:07,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1323530788, now seen corresponding path program 1 times [2022-01-10 12:11:07,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:07,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171681114] [2022-01-10 12:11:07,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:07,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:07,935 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 12:11:07,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:07,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171681114] [2022-01-10 12:11:07,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171681114] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:07,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:07,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:11:07,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369769038] [2022-01-10 12:11:07,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:07,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:11:07,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:07,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:11:07,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:11:07,937 INFO L87 Difference]: Start difference. First operand 17807 states and 30365 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:11,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:11,089 INFO L93 Difference]: Finished difference Result 42423 states and 70299 transitions. [2022-01-10 12:11:11,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:11:11,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 12:11:11,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:11,178 INFO L225 Difference]: With dead ends: 42423 [2022-01-10 12:11:11,178 INFO L226 Difference]: Without dead ends: 39944 [2022-01-10 12:11:11,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:11:11,193 INFO L933 BasicCegarLoop]: 814 mSDtfsCounter, 1064 mSDsluCounter, 2067 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 2881 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:11:11,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1064 Valid, 2881 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:11:11,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39944 states. [2022-01-10 12:11:13,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39944 to 35566. [2022-01-10 12:11:13,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35566 states, 35564 states have (on average 1.7056292880440895) internal successors, (60659), 35565 states have internal predecessors, (60659), 0 states have call successors, (0), 0 states 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 12:11:13,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35566 states to 35566 states and 60659 transitions. [2022-01-10 12:11:13,781 INFO L78 Accepts]: Start accepts. Automaton has 35566 states and 60659 transitions. Word has length 71 [2022-01-10 12:11:13,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:13,781 INFO L470 AbstractCegarLoop]: Abstraction has 35566 states and 60659 transitions. [2022-01-10 12:11:13,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:13,781 INFO L276 IsEmpty]: Start isEmpty. Operand 35566 states and 60659 transitions. [2022-01-10 12:11:13,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:11:13,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:13,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:11:13,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:11:13,822 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:11:13,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:13,823 INFO L85 PathProgramCache]: Analyzing trace with hash -234118953, now seen corresponding path program 1 times [2022-01-10 12:11:13,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:13,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965164539] [2022-01-10 12:11:13,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:13,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:13,956 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 12:11:13,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:13,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965164539] [2022-01-10 12:11:13,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965164539] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:13,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:13,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 12:11:13,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477393489] [2022-01-10 12:11:13,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:13,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:11:13,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:13,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:11:13,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:11:13,958 INFO L87 Difference]: Start difference. First operand 35566 states and 60659 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:22,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:22,960 INFO L93 Difference]: Finished difference Result 81665 states and 130393 transitions. [2022-01-10 12:11:22,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-10 12:11:22,960 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:11:22,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:23,247 INFO L225 Difference]: With dead ends: 81665 [2022-01-10 12:11:23,247 INFO L226 Difference]: Without dead ends: 76469 [2022-01-10 12:11:23,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=458, Invalid=1182, Unknown=0, NotChecked=0, Total=1640 [2022-01-10 12:11:23,298 INFO L933 BasicCegarLoop]: 682 mSDtfsCounter, 7280 mSDsluCounter, 4342 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7280 SdHoareTripleChecker+Valid, 5024 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:11:23,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7280 Valid, 5024 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:11:23,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76469 states. [2022-01-10 12:11:27,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76469 to 41645. [2022-01-10 12:11:27,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41645 states, 41643 states have (on average 1.680594577720145) internal successors, (69985), 41644 states have internal predecessors, (69985), 0 states have call successors, (0), 0 states 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 12:11:27,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41645 states to 41645 states and 69985 transitions. [2022-01-10 12:11:27,291 INFO L78 Accepts]: Start accepts. Automaton has 41645 states and 69985 transitions. Word has length 72 [2022-01-10 12:11:27,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:27,291 INFO L470 AbstractCegarLoop]: Abstraction has 41645 states and 69985 transitions. [2022-01-10 12:11:27,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:27,293 INFO L276 IsEmpty]: Start isEmpty. Operand 41645 states and 69985 transitions. [2022-01-10 12:11:27,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 12:11:27,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:27,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:11:27,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:11:27,331 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:11:27,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:27,332 INFO L85 PathProgramCache]: Analyzing trace with hash -2041573416, now seen corresponding path program 1 times [2022-01-10 12:11:27,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:27,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549157957] [2022-01-10 12:11:27,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:27,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:27,457 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 12:11:27,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:27,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549157957] [2022-01-10 12:11:27,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549157957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:27,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:27,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:11:27,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600506434] [2022-01-10 12:11:27,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:27,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:11:27,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:27,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:11:27,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:11:27,459 INFO L87 Difference]: Start difference. First operand 41645 states and 69985 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:41,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:11:41,553 INFO L93 Difference]: Finished difference Result 109153 states and 169033 transitions. [2022-01-10 12:11:41,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:11:41,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 12:11:41,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:11:41,821 INFO L225 Difference]: With dead ends: 109153 [2022-01-10 12:11:41,821 INFO L226 Difference]: Without dead ends: 102710 [2022-01-10 12:11:41,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:11:41,866 INFO L933 BasicCegarLoop]: 931 mSDtfsCounter, 1434 mSDsluCounter, 2236 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 3167 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:11:41,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1434 Valid, 3167 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:11:41,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102710 states. [2022-01-10 12:11:50,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102710 to 58960. [2022-01-10 12:11:50,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58960 states, 58958 states have (on average 1.6305166389633299) internal successors, (96132), 58959 states have internal predecessors, (96132), 0 states have call successors, (0), 0 states 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 12:11:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58960 states to 58960 states and 96132 transitions. [2022-01-10 12:11:50,770 INFO L78 Accepts]: Start accepts. Automaton has 58960 states and 96132 transitions. Word has length 72 [2022-01-10 12:11:50,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:11:50,770 INFO L470 AbstractCegarLoop]: Abstraction has 58960 states and 96132 transitions. [2022-01-10 12:11:50,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:11:50,771 INFO L276 IsEmpty]: Start isEmpty. Operand 58960 states and 96132 transitions. [2022-01-10 12:11:50,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 12:11:50,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:11:50,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:11:50,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:11:50,817 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:11:50,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:11:50,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1136683410, now seen corresponding path program 1 times [2022-01-10 12:11:50,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:11:50,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797290245] [2022-01-10 12:11:50,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:11:50,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:11:50,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:11:50,925 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 12:11:50,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:11:50,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797290245] [2022-01-10 12:11:50,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797290245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:11:50,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:11:50,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:11:50,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142099103] [2022-01-10 12:11:50,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:11:50,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:11:50,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:11:50,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:11:50,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:11:50,927 INFO L87 Difference]: Start difference. First operand 58960 states and 96132 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)