/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_spec27_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:13:30,298 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:13:30,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:13:30,340 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:13:30,341 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:13:30,342 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:13:30,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:13:30,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:13:30,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:13:30,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:13:30,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:13:30,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:13:30,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:13:30,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:13:30,371 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:13:30,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:13:30,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:13:30,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:13:30,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:13:30,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:13:30,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:13:30,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:13:30,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:13:30,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:13:30,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:13:30,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:13:30,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:13:30,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:13:30,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:13:30,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:13:30,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:13:30,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:13:30,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:13:30,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:13:30,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:13:30,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:13:30,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:13:30,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:13:30,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:13:30,403 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:13:30,404 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:13:30,406 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 12:13:30,436 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:13:30,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:13:30,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:13:30,436 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:13:30,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:13:30,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:13:30,438 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:13:30,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:13:30,438 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:13:30,438 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:13:30,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:13:30,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:13:30,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:13:30,439 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:13:30,439 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:13:30,443 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:13:30,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:13:30,443 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:13:30,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:13:30,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:13:30,444 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:13:30,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:13:30,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:13:30,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:13:30,445 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:13:30,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:13:30,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:13:30,446 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:13:30,446 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:13:30,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:13:30,446 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:13:30,447 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:13:30,448 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:13:30,448 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:13:30,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:13:30,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:13:30,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:13:30,721 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:13:30,722 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:13:30,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product19.cil.c [2022-01-10 12:13:30,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f623b0136/1c7246af72354034a7eaa0f98eca7bac/FLAG84e546fd7 [2022-01-10 12:13:31,293 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:13:31,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product19.cil.c [2022-01-10 12:13:31,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f623b0136/1c7246af72354034a7eaa0f98eca7bac/FLAG84e546fd7 [2022-01-10 12:13:31,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f623b0136/1c7246af72354034a7eaa0f98eca7bac [2022-01-10 12:13:31,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:13:31,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:13:31,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:13:31,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:13:31,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:13:31,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:13:31" (1/1) ... [2022-01-10 12:13:31,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ded427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:31, skipping insertion in model container [2022-01-10 12:13:31,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:13:31" (1/1) ... [2022-01-10 12:13:31,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:13:31,891 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:13:32,212 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product19.cil.c[17762,17775] [2022-01-10 12:13:32,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:13:32,371 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:13:32,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:13:32,429 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product19.cil.c[17762,17775] [2022-01-10 12:13:32,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:13:32,506 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:13:32,533 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product19.cil.c[17762,17775] [2022-01-10 12:13:32,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:13:32,603 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:13:32,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:32 WrapperNode [2022-01-10 12:13:32,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:13:32,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:13:32,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:13:32,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:13:32,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:32" (1/1) ... [2022-01-10 12:13:32,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:32" (1/1) ... [2022-01-10 12:13:32,745 INFO L137 Inliner]: procedures = 129, calls = 200, calls flagged for inlining = 113, calls inlined = 151, statements flattened = 2271 [2022-01-10 12:13:32,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:13:32,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:13:32,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:13:32,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:13:32,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:32" (1/1) ... [2022-01-10 12:13:32,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:32" (1/1) ... [2022-01-10 12:13:32,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:32" (1/1) ... [2022-01-10 12:13:32,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:32" (1/1) ... [2022-01-10 12:13:32,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:32" (1/1) ... [2022-01-10 12:13:32,823 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:32" (1/1) ... [2022-01-10 12:13:32,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:32" (1/1) ... [2022-01-10 12:13:32,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:13:32,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:13:32,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:13:32,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:13:32,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:32" (1/1) ... [2022-01-10 12:13:32,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:13:32,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:13:32,888 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 12:13:32,911 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 12:13:32,929 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:13:32,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:13:32,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:13:32,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:13:32,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:13:33,165 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:13:33,166 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:13:34,256 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:13:34,270 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:13:34,270 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:13:34,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:13:34 BoogieIcfgContainer [2022-01-10 12:13:34,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:13:34,273 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:13:34,273 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:13:34,275 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:13:34,277 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:13:34" (1/1) ... [2022-01-10 12:13:34,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:13:34 BasicIcfg [2022-01-10 12:13:34,694 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:13:34,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:13:34,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:13:34,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:13:34,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:13:31" (1/4) ... [2022-01-10 12:13:34,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370a5a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:13:34, skipping insertion in model container [2022-01-10 12:13:34,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:13:32" (2/4) ... [2022-01-10 12:13:34,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370a5a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:13:34, skipping insertion in model container [2022-01-10 12:13:34,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:13:34" (3/4) ... [2022-01-10 12:13:34,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370a5a86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:13:34, skipping insertion in model container [2022-01-10 12:13:34,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:13:34" (4/4) ... [2022-01-10 12:13:34,701 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product19.cil.cTransformedIcfg [2022-01-10 12:13:34,705 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:13:34,705 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 12:13:34,757 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:13:34,762 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 12:13:34,762 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 12:13:34,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 508 states, 505 states have (on average 1.689108910891089) internal successors, (853), 507 states have internal predecessors, (853), 0 states have call successors, (0), 0 states 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 12:13:34,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 12:13:34,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:34,808 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] [2022-01-10 12:13:34,809 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:34,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:34,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1990307793, now seen corresponding path program 1 times [2022-01-10 12:13:34,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:34,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963820847] [2022-01-10 12:13:34,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:34,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:35,248 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 12:13:35,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:35,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963820847] [2022-01-10 12:13:35,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963820847] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:35,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:35,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:13:35,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631284405] [2022-01-10 12:13:35,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:35,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:13:35,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:35,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:13:35,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:13:35,285 INFO L87 Difference]: Start difference. First operand has 508 states, 505 states have (on average 1.689108910891089) internal successors, (853), 507 states have internal predecessors, (853), 0 states have call successors, (0), 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 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 12:13:35,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:35,346 INFO L93 Difference]: Finished difference Result 755 states and 1246 transitions. [2022-01-10 12:13:35,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:13:35,351 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-10 12:13:35,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:35,363 INFO L225 Difference]: With dead ends: 755 [2022-01-10 12:13:35,363 INFO L226 Difference]: Without dead ends: 460 [2022-01-10 12:13:35,367 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 12:13:35,373 INFO L933 BasicCegarLoop]: 847 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, 847 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 12:13:35,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:13:35,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-01-10 12:13:35,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2022-01-10 12:13:35,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.703056768558952) internal successors, (780), 459 states have internal predecessors, (780), 0 states have call successors, (0), 0 states 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 12:13:35,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 780 transitions. [2022-01-10 12:13:35,445 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 780 transitions. Word has length 55 [2022-01-10 12:13:35,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:35,445 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 780 transitions. [2022-01-10 12:13:35,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 12:13:35,446 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 780 transitions. [2022-01-10 12:13:35,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 12:13:35,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:35,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:13:35,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:13:35,448 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:35,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:35,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2008301787, now seen corresponding path program 1 times [2022-01-10 12:13:35,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:35,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987053002] [2022-01-10 12:13:35,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:35,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:35,599 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 12:13:35,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:35,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987053002] [2022-01-10 12:13:35,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987053002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:35,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:35,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:13:35,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102734085] [2022-01-10 12:13:35,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:35,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:13:35,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:35,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:13:35,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:13:35,608 INFO L87 Difference]: Start difference. First operand 460 states and 780 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:35,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:35,668 INFO L93 Difference]: Finished difference Result 600 states and 1002 transitions. [2022-01-10 12:13:35,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:13:35,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 12:13:35,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:35,671 INFO L225 Difference]: With dead ends: 600 [2022-01-10 12:13:35,671 INFO L226 Difference]: Without dead ends: 460 [2022-01-10 12:13:35,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:13:35,673 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 543 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:35,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 1779 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:13:35,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-01-10 12:13:35,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2022-01-10 12:13:35,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.6986899563318778) internal successors, (778), 459 states have internal predecessors, (778), 0 states have call successors, (0), 0 states 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 12:13:35,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 778 transitions. [2022-01-10 12:13:35,708 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 778 transitions. Word has length 56 [2022-01-10 12:13:35,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:35,710 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 778 transitions. [2022-01-10 12:13:35,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:35,712 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 778 transitions. [2022-01-10 12:13:35,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 12:13:35,719 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:35,719 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] [2022-01-10 12:13:35,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:13:35,719 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:35,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:35,720 INFO L85 PathProgramCache]: Analyzing trace with hash 472823508, now seen corresponding path program 1 times [2022-01-10 12:13:35,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:35,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746973371] [2022-01-10 12:13:35,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:35,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:35,893 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 12:13:35,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:35,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746973371] [2022-01-10 12:13:35,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746973371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:35,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:35,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:13:35,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675035638] [2022-01-10 12:13:35,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:35,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:13:35,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:35,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:13:35,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:13:35,896 INFO L87 Difference]: Start difference. First operand 460 states and 778 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 12:13:35,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:35,964 INFO L93 Difference]: Finished difference Result 901 states and 1528 transitions. [2022-01-10 12:13:35,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:13:35,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-01-10 12:13:35,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:35,966 INFO L225 Difference]: With dead ends: 901 [2022-01-10 12:13:35,967 INFO L226 Difference]: Without dead ends: 460 [2022-01-10 12:13:35,970 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 12:13:35,972 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 753 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:35,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [753 Valid, 772 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:13:35,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-01-10 12:13:35,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2022-01-10 12:13:35,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.6943231441048034) internal successors, (776), 459 states have internal predecessors, (776), 0 states have call successors, (0), 0 states 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 12:13:35,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 776 transitions. [2022-01-10 12:13:35,995 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 776 transitions. Word has length 59 [2022-01-10 12:13:35,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:35,995 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 776 transitions. [2022-01-10 12:13:35,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 12:13:35,995 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 776 transitions. [2022-01-10 12:13:35,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 12:13:35,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:35,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:13:35,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:13:35,997 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:35,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:35,998 INFO L85 PathProgramCache]: Analyzing trace with hash -2043077932, now seen corresponding path program 1 times [2022-01-10 12:13:35,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:35,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401393194] [2022-01-10 12:13:35,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:35,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:36,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:13:36,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:36,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401393194] [2022-01-10 12:13:36,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401393194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:36,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:36,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:13:36,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424013466] [2022-01-10 12:13:36,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:36,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:13:36,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:36,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:13:36,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:13:36,134 INFO L87 Difference]: Start difference. First operand 460 states and 776 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:36,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:36,336 INFO L93 Difference]: Finished difference Result 2168 states and 3676 transitions. [2022-01-10 12:13:36,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:13:36,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 12:13:36,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:36,346 INFO L225 Difference]: With dead ends: 2168 [2022-01-10 12:13:36,346 INFO L226 Difference]: Without dead ends: 1732 [2022-01-10 12:13:36,347 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 12:13:36,353 INFO L933 BasicCegarLoop]: 1475 mSDtfsCounter, 3663 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3663 SdHoareTripleChecker+Valid, 3675 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 12:13:36,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3663 Valid, 3675 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:36,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1732 states. [2022-01-10 12:13:36,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1732 to 460. [2022-01-10 12:13:36,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.6921397379912664) internal successors, (775), 459 states have internal predecessors, (775), 0 states have call successors, (0), 0 states 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 12:13:36,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 775 transitions. [2022-01-10 12:13:36,387 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 775 transitions. Word has length 61 [2022-01-10 12:13:36,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:36,387 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 775 transitions. [2022-01-10 12:13:36,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:36,387 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 775 transitions. [2022-01-10 12:13:36,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 12:13:36,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:36,390 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] [2022-01-10 12:13:36,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:13:36,390 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:36,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:36,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1564162192, now seen corresponding path program 1 times [2022-01-10 12:13:36,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:36,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258127598] [2022-01-10 12:13:36,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:36,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:36,532 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 12:13:36,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:36,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258127598] [2022-01-10 12:13:36,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258127598] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:36,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:36,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:13:36,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392231045] [2022-01-10 12:13:36,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:36,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:13:36,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:36,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:13:36,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:13:36,534 INFO L87 Difference]: Start difference. First operand 460 states and 775 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 12:13:36,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:36,586 INFO L93 Difference]: Finished difference Result 905 states and 1528 transitions. [2022-01-10 12:13:36,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:13:36,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-01-10 12:13:36,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:36,588 INFO L225 Difference]: With dead ends: 905 [2022-01-10 12:13:36,589 INFO L226 Difference]: Without dead ends: 474 [2022-01-10 12:13:36,589 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 12:13:36,590 INFO L933 BasicCegarLoop]: 789 mSDtfsCounter, 754 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 811 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 12:13:36,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 811 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:13:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2022-01-10 12:13:36,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 460. [2022-01-10 12:13:36,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.6899563318777293) internal successors, (774), 459 states have internal predecessors, (774), 0 states have call successors, (0), 0 states 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 12:13:36,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 774 transitions. [2022-01-10 12:13:36,621 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 774 transitions. Word has length 62 [2022-01-10 12:13:36,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:36,621 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 774 transitions. [2022-01-10 12:13:36,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 12:13:36,621 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 774 transitions. [2022-01-10 12:13:36,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 12:13:36,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:36,623 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 12:13:36,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:13:36,623 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:36,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:36,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1567716789, now seen corresponding path program 1 times [2022-01-10 12:13:36,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:36,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190924503] [2022-01-10 12:13:36,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:36,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:36,718 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 12:13:36,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:36,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190924503] [2022-01-10 12:13:36,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190924503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:36,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:36,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:13:36,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793983326] [2022-01-10 12:13:36,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:36,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:13:36,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:36,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:13:36,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:13:36,720 INFO L87 Difference]: Start difference. First operand 460 states and 774 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 12:13:36,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:36,877 INFO L93 Difference]: Finished difference Result 1314 states and 2222 transitions. [2022-01-10 12:13:36,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:13:36,877 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 12:13:36,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:36,881 INFO L225 Difference]: With dead ends: 1314 [2022-01-10 12:13:36,881 INFO L226 Difference]: Without dead ends: 888 [2022-01-10 12:13:36,882 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 12:13:36,883 INFO L933 BasicCegarLoop]: 783 mSDtfsCounter, 3586 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3586 SdHoareTripleChecker+Valid, 1580 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 12:13:36,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3586 Valid, 1580 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:36,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2022-01-10 12:13:36,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 460. [2022-01-10 12:13:36,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.685589519650655) internal successors, (772), 459 states have internal predecessors, (772), 0 states have call successors, (0), 0 states 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 12:13:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 772 transitions. [2022-01-10 12:13:36,925 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 772 transitions. Word has length 63 [2022-01-10 12:13:36,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:36,927 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 772 transitions. [2022-01-10 12:13:36,927 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 12:13:36,927 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 772 transitions. [2022-01-10 12:13:36,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:13:36,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:36,928 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 12:13:36,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:13:36,929 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:36,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:36,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1283531346, now seen corresponding path program 1 times [2022-01-10 12:13:36,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:36,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852005349] [2022-01-10 12:13:36,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:36,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:37,098 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 12:13:37,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:37,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852005349] [2022-01-10 12:13:37,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852005349] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:37,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:37,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:13:37,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55217685] [2022-01-10 12:13:37,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:37,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:13:37,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:37,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:13:37,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:13:37,101 INFO L87 Difference]: Start difference. First operand 460 states and 772 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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 12:13:37,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:37,487 INFO L93 Difference]: Finished difference Result 2274 states and 3808 transitions. [2022-01-10 12:13:37,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:13:37,488 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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 12:13:37,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:37,497 INFO L225 Difference]: With dead ends: 2274 [2022-01-10 12:13:37,497 INFO L226 Difference]: Without dead ends: 2092 [2022-01-10 12:13:37,498 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 12:13:37,498 INFO L933 BasicCegarLoop]: 1132 mSDtfsCounter, 4026 mSDsluCounter, 4158 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4026 SdHoareTripleChecker+Valid, 5290 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 12:13:37,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4026 Valid, 5290 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:37,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2022-01-10 12:13:37,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 835. [2022-01-10 12:13:37,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 833 states have (on average 1.687875150060024) internal successors, (1406), 834 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states 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 12:13:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1406 transitions. [2022-01-10 12:13:37,582 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1406 transitions. Word has length 65 [2022-01-10 12:13:37,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:37,582 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 1406 transitions. [2022-01-10 12:13:37,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 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 12:13:37,582 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1406 transitions. [2022-01-10 12:13:37,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 12:13:37,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:37,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:13:37,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:13:37,584 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:37,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:37,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1039032832, now seen corresponding path program 1 times [2022-01-10 12:13:37,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:37,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631423250] [2022-01-10 12:13:37,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:37,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:37,701 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 12:13:37,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:37,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631423250] [2022-01-10 12:13:37,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631423250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:37,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:37,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:13:37,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596071061] [2022-01-10 12:13:37,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:37,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:13:37,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:37,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:13:37,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:13:37,703 INFO L87 Difference]: Start difference. First operand 835 states and 1406 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:38,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:38,141 INFO L93 Difference]: Finished difference Result 4011 states and 6740 transitions. [2022-01-10 12:13:38,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:13:38,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 12:13:38,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:38,157 INFO L225 Difference]: With dead ends: 4011 [2022-01-10 12:13:38,157 INFO L226 Difference]: Without dead ends: 3720 [2022-01-10 12:13:38,158 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 12:13:38,159 INFO L933 BasicCegarLoop]: 1052 mSDtfsCounter, 4035 mSDsluCounter, 3272 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4035 SdHoareTripleChecker+Valid, 4324 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 12:13:38,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4035 Valid, 4324 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:38,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3720 states. [2022-01-10 12:13:38,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3720 to 1562. [2022-01-10 12:13:38,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1560 states have (on average 1.6948717948717948) internal successors, (2644), 1561 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states 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 12:13:38,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 2644 transitions. [2022-01-10 12:13:38,332 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 2644 transitions. Word has length 66 [2022-01-10 12:13:38,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:38,332 INFO L470 AbstractCegarLoop]: Abstraction has 1562 states and 2644 transitions. [2022-01-10 12:13:38,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:38,333 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 2644 transitions. [2022-01-10 12:13:38,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 12:13:38,335 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:38,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:13:38,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:13:38,336 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:38,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:38,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1909127722, now seen corresponding path program 1 times [2022-01-10 12:13:38,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:38,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391028710] [2022-01-10 12:13:38,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:38,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:38,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:38,413 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 12:13:38,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:38,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391028710] [2022-01-10 12:13:38,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391028710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:38,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:38,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:13:38,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216590850] [2022-01-10 12:13:38,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:38,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:13:38,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:38,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:13:38,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:13:38,418 INFO L87 Difference]: Start difference. First operand 1562 states and 2644 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:38,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:38,781 INFO L93 Difference]: Finished difference Result 4498 states and 7672 transitions. [2022-01-10 12:13:38,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:13:38,782 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 12:13:38,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:38,794 INFO L225 Difference]: With dead ends: 4498 [2022-01-10 12:13:38,794 INFO L226 Difference]: Without dead ends: 2986 [2022-01-10 12:13:38,798 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 12:13:38,801 INFO L933 BasicCegarLoop]: 1447 mSDtfsCounter, 2253 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2253 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:38,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2253 Valid, 2172 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:38,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2022-01-10 12:13:38,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 1562. [2022-01-10 12:13:38,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1560 states have (on average 1.6935897435897436) internal successors, (2642), 1561 states have internal predecessors, (2642), 0 states have call successors, (0), 0 states 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 12:13:38,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 2642 transitions. [2022-01-10 12:13:38,944 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 2642 transitions. Word has length 66 [2022-01-10 12:13:38,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:38,944 INFO L470 AbstractCegarLoop]: Abstraction has 1562 states and 2642 transitions. [2022-01-10 12:13:38,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:38,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 2642 transitions. [2022-01-10 12:13:38,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:13:38,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:38,949 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 12:13:38,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:13:38,950 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:38,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:38,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1321353447, now seen corresponding path program 1 times [2022-01-10 12:13:38,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:38,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540218939] [2022-01-10 12:13:38,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:38,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:39,061 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 12:13:39,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:39,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540218939] [2022-01-10 12:13:39,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540218939] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:39,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:39,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:13:39,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562158161] [2022-01-10 12:13:39,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:39,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:13:39,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:39,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:13:39,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:13:39,063 INFO L87 Difference]: Start difference. First operand 1562 states and 2642 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:13:39,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:39,446 INFO L93 Difference]: Finished difference Result 4496 states and 7664 transitions. [2022-01-10 12:13:39,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:13:39,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:13:39,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:39,459 INFO L225 Difference]: With dead ends: 4496 [2022-01-10 12:13:39,460 INFO L226 Difference]: Without dead ends: 2994 [2022-01-10 12:13:39,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:13:39,463 INFO L933 BasicCegarLoop]: 1452 mSDtfsCounter, 2238 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2238 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:39,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2238 Valid, 2204 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:39,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2994 states. [2022-01-10 12:13:39,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2994 to 1562. [2022-01-10 12:13:39,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1562 states, 1560 states have (on average 1.6923076923076923) internal successors, (2640), 1561 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states 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 12:13:39,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1562 states to 1562 states and 2640 transitions. [2022-01-10 12:13:39,622 INFO L78 Accepts]: Start accepts. Automaton has 1562 states and 2640 transitions. Word has length 67 [2022-01-10 12:13:39,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:39,623 INFO L470 AbstractCegarLoop]: Abstraction has 1562 states and 2640 transitions. [2022-01-10 12:13:39,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:13:39,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1562 states and 2640 transitions. [2022-01-10 12:13:39,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:13:39,625 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:39,625 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 12:13:39,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:13:39,626 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:39,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:39,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1313594088, now seen corresponding path program 1 times [2022-01-10 12:13:39,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:39,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902533183] [2022-01-10 12:13:39,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:39,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:39,711 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 12:13:39,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:39,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902533183] [2022-01-10 12:13:39,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902533183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:39,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:39,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:13:39,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398452690] [2022-01-10 12:13:39,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:39,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:13:39,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:39,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:13:39,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:13:39,713 INFO L87 Difference]: Start difference. First operand 1562 states and 2640 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:13:40,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:40,057 INFO L93 Difference]: Finished difference Result 3083 states and 5052 transitions. [2022-01-10 12:13:40,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:13:40,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:13:40,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:40,067 INFO L225 Difference]: With dead ends: 3083 [2022-01-10 12:13:40,067 INFO L226 Difference]: Without dead ends: 2593 [2022-01-10 12:13:40,068 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 12:13:40,069 INFO L933 BasicCegarLoop]: 1156 mSDtfsCounter, 1059 mSDsluCounter, 2249 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 3405 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:40,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1059 Valid, 3405 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:40,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2593 states. [2022-01-10 12:13:40,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2593 to 1616. [2022-01-10 12:13:40,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1616 states, 1614 states have (on average 1.684634448574969) internal successors, (2719), 1615 states have internal predecessors, (2719), 0 states have call successors, (0), 0 states 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 12:13:40,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2719 transitions. [2022-01-10 12:13:40,226 INFO L78 Accepts]: Start accepts. Automaton has 1616 states and 2719 transitions. Word has length 67 [2022-01-10 12:13:40,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:40,226 INFO L470 AbstractCegarLoop]: Abstraction has 1616 states and 2719 transitions. [2022-01-10 12:13:40,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 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 12:13:40,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1616 states and 2719 transitions. [2022-01-10 12:13:40,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:13:40,229 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:40,229 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 12:13:40,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:13:40,230 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:40,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:40,230 INFO L85 PathProgramCache]: Analyzing trace with hash 503258401, now seen corresponding path program 1 times [2022-01-10 12:13:40,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:40,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633416035] [2022-01-10 12:13:40,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:40,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:40,412 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 12:13:40,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:40,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633416035] [2022-01-10 12:13:40,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633416035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:40,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:40,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 12:13:40,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070944351] [2022-01-10 12:13:40,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:40,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:13:40,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:40,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:13:40,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:13:40,414 INFO L87 Difference]: Start difference. First operand 1616 states and 2719 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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 12:13:41,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:41,965 INFO L93 Difference]: Finished difference Result 5949 states and 9112 transitions. [2022-01-10 12:13:41,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-10 12:13:41,965 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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 12:13:41,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:41,984 INFO L225 Difference]: With dead ends: 5949 [2022-01-10 12:13:41,984 INFO L226 Difference]: Without dead ends: 5659 [2022-01-10 12:13:41,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=501, Invalid=1391, Unknown=0, NotChecked=0, Total=1892 [2022-01-10 12:13:41,987 INFO L933 BasicCegarLoop]: 985 mSDtfsCounter, 6986 mSDsluCounter, 6667 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6986 SdHoareTripleChecker+Valid, 7652 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:41,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6986 Valid, 7652 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:13:41,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5659 states. [2022-01-10 12:13:42,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5659 to 2383. [2022-01-10 12:13:42,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2383 states, 2381 states have (on average 1.6560268794624107) internal successors, (3943), 2382 states have internal predecessors, (3943), 0 states have call successors, (0), 0 states 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 12:13:42,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2383 states to 2383 states and 3943 transitions. [2022-01-10 12:13:42,346 INFO L78 Accepts]: Start accepts. Automaton has 2383 states and 3943 transitions. Word has length 67 [2022-01-10 12:13:42,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:42,347 INFO L470 AbstractCegarLoop]: Abstraction has 2383 states and 3943 transitions. [2022-01-10 12:13:42,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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 12:13:42,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2383 states and 3943 transitions. [2022-01-10 12:13:42,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:13:42,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:42,354 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 12:13:42,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:13:42,354 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:42,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:42,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1548306250, now seen corresponding path program 1 times [2022-01-10 12:13:42,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:42,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818298849] [2022-01-10 12:13:42,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:42,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:42,506 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 12:13:42,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:42,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818298849] [2022-01-10 12:13:42,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818298849] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:42,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:42,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:13:42,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377056488] [2022-01-10 12:13:42,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:42,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:13:42,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:42,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:13:42,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:13:42,508 INFO L87 Difference]: Start difference. First operand 2383 states and 3943 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 12:13:43,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:43,550 INFO L93 Difference]: Finished difference Result 6323 states and 9741 transitions. [2022-01-10 12:13:43,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:13:43,551 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 12:13:43,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:43,567 INFO L225 Difference]: With dead ends: 6323 [2022-01-10 12:13:43,567 INFO L226 Difference]: Without dead ends: 5654 [2022-01-10 12:13:43,570 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 12:13:43,571 INFO L933 BasicCegarLoop]: 764 mSDtfsCounter, 1982 mSDsluCounter, 1982 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:43,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1982 Valid, 2746 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:43,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5654 states. [2022-01-10 12:13:43,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5654 to 3120. [2022-01-10 12:13:43,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3120 states, 3118 states have (on average 1.6205901218729954) internal successors, (5053), 3119 states have internal predecessors, (5053), 0 states have call successors, (0), 0 states 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 12:13:43,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 5053 transitions. [2022-01-10 12:13:43,983 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 5053 transitions. Word has length 68 [2022-01-10 12:13:43,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:43,984 INFO L470 AbstractCegarLoop]: Abstraction has 3120 states and 5053 transitions. [2022-01-10 12:13:43,984 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 12:13:43,984 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 5053 transitions. [2022-01-10 12:13:43,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:13:43,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:43,989 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 12:13:43,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:13:43,989 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:43,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:43,990 INFO L85 PathProgramCache]: Analyzing trace with hash 619430785, now seen corresponding path program 1 times [2022-01-10 12:13:43,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:43,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772977395] [2022-01-10 12:13:43,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:43,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:44,096 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 12:13:44,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:44,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772977395] [2022-01-10 12:13:44,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772977395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:44,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:44,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:13:44,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065475895] [2022-01-10 12:13:44,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:44,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:13:44,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:44,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:13:44,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:13:44,098 INFO L87 Difference]: Start difference. First operand 3120 states and 5053 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 12:13:45,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:45,568 INFO L93 Difference]: Finished difference Result 9966 states and 15088 transitions. [2022-01-10 12:13:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:13:45,568 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 12:13:45,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:45,585 INFO L225 Difference]: With dead ends: 9966 [2022-01-10 12:13:45,585 INFO L226 Difference]: Without dead ends: 8720 [2022-01-10 12:13:45,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:13:45,589 INFO L933 BasicCegarLoop]: 1246 mSDtfsCounter, 965 mSDsluCounter, 2866 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 4112 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:45,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 4112 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:45,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8720 states. [2022-01-10 12:13:46,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8720 to 3162. [2022-01-10 12:13:46,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3162 states, 3160 states have (on average 1.6123417721518987) internal successors, (5095), 3161 states have internal predecessors, (5095), 0 states have call successors, (0), 0 states 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 12:13:46,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3162 states to 3162 states and 5095 transitions. [2022-01-10 12:13:46,044 INFO L78 Accepts]: Start accepts. Automaton has 3162 states and 5095 transitions. Word has length 69 [2022-01-10 12:13:46,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:46,044 INFO L470 AbstractCegarLoop]: Abstraction has 3162 states and 5095 transitions. [2022-01-10 12:13:46,045 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 12:13:46,045 INFO L276 IsEmpty]: Start isEmpty. Operand 3162 states and 5095 transitions. [2022-01-10 12:13:46,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 12:13:46,049 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:46,049 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 12:13:46,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:13:46,050 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:46,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:46,050 INFO L85 PathProgramCache]: Analyzing trace with hash 255805026, now seen corresponding path program 1 times [2022-01-10 12:13:46,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:46,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454234798] [2022-01-10 12:13:46,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:46,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:46,200 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 12:13:46,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:46,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454234798] [2022-01-10 12:13:46,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454234798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:46,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:46,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:13:46,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961842504] [2022-01-10 12:13:46,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:46,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:13:46,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:46,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:13:46,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:13:46,202 INFO L87 Difference]: Start difference. First operand 3162 states and 5095 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 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 12:13:46,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:46,880 INFO L93 Difference]: Finished difference Result 4850 states and 7550 transitions. [2022-01-10 12:13:46,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 12:13:46,881 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 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 12:13:46,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:46,887 INFO L225 Difference]: With dead ends: 4850 [2022-01-10 12:13:46,888 INFO L226 Difference]: Without dead ends: 3502 [2022-01-10 12:13:46,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:13:46,890 INFO L933 BasicCegarLoop]: 783 mSDtfsCounter, 1916 mSDsluCounter, 3975 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 4758 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:46,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1916 Valid, 4758 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:13:46,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3502 states. [2022-01-10 12:13:47,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3502 to 2950. [2022-01-10 12:13:47,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2950 states, 2948 states have (on average 1.6061736770691994) internal successors, (4735), 2949 states have internal predecessors, (4735), 0 states have call successors, (0), 0 states 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 12:13:47,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2950 states to 2950 states and 4735 transitions. [2022-01-10 12:13:47,372 INFO L78 Accepts]: Start accepts. Automaton has 2950 states and 4735 transitions. Word has length 70 [2022-01-10 12:13:47,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:47,372 INFO L470 AbstractCegarLoop]: Abstraction has 2950 states and 4735 transitions. [2022-01-10 12:13:47,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 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 12:13:47,373 INFO L276 IsEmpty]: Start isEmpty. Operand 2950 states and 4735 transitions. [2022-01-10 12:13:47,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 12:13:47,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:47,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:13:47,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:13:47,379 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:47,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:47,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1476196584, now seen corresponding path program 1 times [2022-01-10 12:13:47,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:47,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349190072] [2022-01-10 12:13:47,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:47,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:47,524 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 12:13:47,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:47,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349190072] [2022-01-10 12:13:47,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349190072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:47,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:47,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:13:47,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741844225] [2022-01-10 12:13:47,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:47,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:13:47,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:47,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:13:47,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:13:47,527 INFO L87 Difference]: Start difference. First operand 2950 states and 4735 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 12:13:49,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:49,663 INFO L93 Difference]: Finished difference Result 9668 states and 14183 transitions. [2022-01-10 12:13:49,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 12:13:49,664 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-10 12:13:49,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:49,678 INFO L225 Difference]: With dead ends: 9668 [2022-01-10 12:13:49,678 INFO L226 Difference]: Without dead ends: 8548 [2022-01-10 12:13:49,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=750, Unknown=0, NotChecked=0, Total=1056 [2022-01-10 12:13:49,681 INFO L933 BasicCegarLoop]: 942 mSDtfsCounter, 5734 mSDsluCounter, 5462 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5734 SdHoareTripleChecker+Valid, 6404 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:49,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5734 Valid, 6404 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:13:49,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8548 states. [2022-01-10 12:13:50,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8548 to 2938. [2022-01-10 12:13:50,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2936 states have (on average 1.6025204359673024) internal successors, (4705), 2937 states have internal predecessors, (4705), 0 states have call successors, (0), 0 states 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 12:13:50,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 4705 transitions. [2022-01-10 12:13:50,140 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 4705 transitions. Word has length 82 [2022-01-10 12:13:50,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:50,141 INFO L470 AbstractCegarLoop]: Abstraction has 2938 states and 4705 transitions. [2022-01-10 12:13:50,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 12:13:50,141 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 4705 transitions. [2022-01-10 12:13:50,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 12:13:50,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:50,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:13:50,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:13:50,146 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:50,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:50,146 INFO L85 PathProgramCache]: Analyzing trace with hash 468654352, now seen corresponding path program 1 times [2022-01-10 12:13:50,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:50,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076367184] [2022-01-10 12:13:50,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:50,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:50,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:50,247 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 12:13:50,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:50,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076367184] [2022-01-10 12:13:50,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076367184] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:50,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:50,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:13:50,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67632685] [2022-01-10 12:13:50,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:50,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:13:50,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:50,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:13:50,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:13:50,249 INFO L87 Difference]: Start difference. First operand 2938 states and 4705 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 12:13:51,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:51,035 INFO L93 Difference]: Finished difference Result 5104 states and 7883 transitions. [2022-01-10 12:13:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 12:13:51,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-10 12:13:51,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:51,043 INFO L225 Difference]: With dead ends: 5104 [2022-01-10 12:13:51,044 INFO L226 Difference]: Without dead ends: 3592 [2022-01-10 12:13:51,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-10 12:13:51,047 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 1614 mSDsluCounter, 2703 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 3470 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:51,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1614 Valid, 3470 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:13:51,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3592 states. [2022-01-10 12:13:51,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3592 to 2938. [2022-01-10 12:13:51,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2938 states, 2936 states have (on average 1.5997956403269755) internal successors, (4697), 2937 states have internal predecessors, (4697), 0 states have call successors, (0), 0 states 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 12:13:51,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2938 states to 2938 states and 4697 transitions. [2022-01-10 12:13:51,434 INFO L78 Accepts]: Start accepts. Automaton has 2938 states and 4697 transitions. Word has length 82 [2022-01-10 12:13:51,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:51,434 INFO L470 AbstractCegarLoop]: Abstraction has 2938 states and 4697 transitions. [2022-01-10 12:13:51,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 12:13:51,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2938 states and 4697 transitions. [2022-01-10 12:13:51,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 12:13:51,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:51,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:13:51,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:13:51,438 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:51,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:51,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1541449489, now seen corresponding path program 1 times [2022-01-10 12:13:51,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:51,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27454671] [2022-01-10 12:13:51,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:51,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:51,561 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 12:13:51,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:51,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27454671] [2022-01-10 12:13:51,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27454671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:51,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:51,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:13:51,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327183098] [2022-01-10 12:13:51,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:51,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:13:51,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:51,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:13:51,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:13:51,563 INFO L87 Difference]: Start difference. First operand 2938 states and 4697 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 12:13:53,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:53,279 INFO L93 Difference]: Finished difference Result 9446 states and 14139 transitions. [2022-01-10 12:13:53,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:13:53,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-10 12:13:53,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:53,291 INFO L225 Difference]: With dead ends: 9446 [2022-01-10 12:13:53,291 INFO L226 Difference]: Without dead ends: 7870 [2022-01-10 12:13:53,294 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 12:13:53,295 INFO L933 BasicCegarLoop]: 772 mSDtfsCounter, 1788 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1788 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:53,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1788 Valid, 2774 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:53,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7870 states. [2022-01-10 12:13:54,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7870 to 4648. [2022-01-10 12:13:54,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4648 states, 4646 states have (on average 1.56198880757641) internal successors, (7257), 4647 states have internal predecessors, (7257), 0 states have call successors, (0), 0 states 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 12:13:54,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 7257 transitions. [2022-01-10 12:13:54,053 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 7257 transitions. Word has length 82 [2022-01-10 12:13:54,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:54,054 INFO L470 AbstractCegarLoop]: Abstraction has 4648 states and 7257 transitions. [2022-01-10 12:13:54,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states 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 12:13:54,054 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 7257 transitions. [2022-01-10 12:13:54,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 12:13:54,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:54,058 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:13:54,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:13:54,058 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:54,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:54,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1187182512, now seen corresponding path program 1 times [2022-01-10 12:13:54,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:54,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832143685] [2022-01-10 12:13:54,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:54,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:54,176 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 12:13:54,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:54,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832143685] [2022-01-10 12:13:54,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832143685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:54,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:54,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:13:54,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566697954] [2022-01-10 12:13:54,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:54,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:13:54,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:54,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:13:54,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:13:54,179 INFO L87 Difference]: Start difference. First operand 4648 states and 7257 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:56,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:13:56,268 INFO L93 Difference]: Finished difference Result 12418 states and 18459 transitions. [2022-01-10 12:13:56,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:13:56,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 12:13:56,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:13:56,280 INFO L225 Difference]: With dead ends: 12418 [2022-01-10 12:13:56,280 INFO L226 Difference]: Without dead ends: 9408 [2022-01-10 12:13:56,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:13:56,285 INFO L933 BasicCegarLoop]: 898 mSDtfsCounter, 1520 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 2893 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:13:56,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1520 Valid, 2893 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:13:56,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9408 states. [2022-01-10 12:13:57,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9408 to 5443. [2022-01-10 12:13:57,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5443 states, 5441 states have (on average 1.5429149053482816) internal successors, (8395), 5442 states have internal predecessors, (8395), 0 states have call successors, (0), 0 states 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 12:13:57,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5443 states to 5443 states and 8395 transitions. [2022-01-10 12:13:57,283 INFO L78 Accepts]: Start accepts. Automaton has 5443 states and 8395 transitions. Word has length 83 [2022-01-10 12:13:57,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:13:57,284 INFO L470 AbstractCegarLoop]: Abstraction has 5443 states and 8395 transitions. [2022-01-10 12:13:57,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:13:57,284 INFO L276 IsEmpty]: Start isEmpty. Operand 5443 states and 8395 transitions. [2022-01-10 12:13:57,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 12:13:57,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:13:57,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:13:57,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:13:57,292 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:13:57,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:13:57,293 INFO L85 PathProgramCache]: Analyzing trace with hash -71887404, now seen corresponding path program 1 times [2022-01-10 12:13:57,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:13:57,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957300005] [2022-01-10 12:13:57,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:13:57,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:13:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:13:57,393 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 12:13:57,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:13:57,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957300005] [2022-01-10 12:13:57,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957300005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:13:57,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:13:57,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:13:57,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875821471] [2022-01-10 12:13:57,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:13:57,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:13:57,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:13:57,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:13:57,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:13:57,395 INFO L87 Difference]: Start difference. First operand 5443 states and 8395 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:01,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:01,200 INFO L93 Difference]: Finished difference Result 17482 states and 25432 transitions. [2022-01-10 12:14:01,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:14:01,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 12:14:01,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:01,217 INFO L225 Difference]: With dead ends: 17482 [2022-01-10 12:14:01,217 INFO L226 Difference]: Without dead ends: 14726 [2022-01-10 12:14:01,221 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 12:14:01,222 INFO L933 BasicCegarLoop]: 1209 mSDtfsCounter, 783 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 3920 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:01,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [783 Valid, 3920 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:14:01,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14726 states. [2022-01-10 12:14:02,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14726 to 5547. [2022-01-10 12:14:02,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5547 states, 5545 states have (on average 1.5287646528403966) internal successors, (8477), 5546 states have internal predecessors, (8477), 0 states have call successors, (0), 0 states 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 12:14:02,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5547 states to 5547 states and 8477 transitions. [2022-01-10 12:14:02,267 INFO L78 Accepts]: Start accepts. Automaton has 5547 states and 8477 transitions. Word has length 84 [2022-01-10 12:14:02,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:02,267 INFO L470 AbstractCegarLoop]: Abstraction has 5547 states and 8477 transitions. [2022-01-10 12:14:02,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:02,267 INFO L276 IsEmpty]: Start isEmpty. Operand 5547 states and 8477 transitions. [2022-01-10 12:14:02,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 12:14:02,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:02,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:02,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:14:02,274 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:02,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:02,274 INFO L85 PathProgramCache]: Analyzing trace with hash 221276805, now seen corresponding path program 1 times [2022-01-10 12:14:02,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:02,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578426260] [2022-01-10 12:14:02,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:02,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:02,369 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 12:14:02,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:02,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578426260] [2022-01-10 12:14:02,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578426260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:02,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:02,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:14:02,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060856485] [2022-01-10 12:14:02,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:02,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:14:02,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:02,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:14:02,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:14:02,372 INFO L87 Difference]: Start difference. First operand 5547 states and 8477 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:03,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:03,910 INFO L93 Difference]: Finished difference Result 9411 states and 14059 transitions. [2022-01-10 12:14:03,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:14:03,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 12:14:03,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:03,921 INFO L225 Difference]: With dead ends: 9411 [2022-01-10 12:14:03,921 INFO L226 Difference]: Without dead ends: 7170 [2022-01-10 12:14:03,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:14:03,924 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 793 mSDsluCounter, 1066 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:03,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 1826 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:14:03,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7170 states. [2022-01-10 12:14:04,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7170 to 5547. [2022-01-10 12:14:04,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5547 states, 5545 states have (on average 1.5280432822362489) internal successors, (8473), 5546 states have internal predecessors, (8473), 0 states have call successors, (0), 0 states 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 12:14:04,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5547 states to 5547 states and 8473 transitions. [2022-01-10 12:14:04,874 INFO L78 Accepts]: Start accepts. Automaton has 5547 states and 8473 transitions. Word has length 84 [2022-01-10 12:14:04,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:04,874 INFO L470 AbstractCegarLoop]: Abstraction has 5547 states and 8473 transitions. [2022-01-10 12:14:04,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:04,874 INFO L276 IsEmpty]: Start isEmpty. Operand 5547 states and 8473 transitions. [2022-01-10 12:14:04,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 12:14:04,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:04,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:04,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 12:14:04,879 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:04,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:04,879 INFO L85 PathProgramCache]: Analyzing trace with hash -2102751034, now seen corresponding path program 1 times [2022-01-10 12:14:04,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:04,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735481935] [2022-01-10 12:14:04,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:04,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:04,976 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 12:14:04,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:04,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735481935] [2022-01-10 12:14:04,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735481935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:04,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:04,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:14:04,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737521838] [2022-01-10 12:14:04,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:04,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:14:04,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:04,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:14:04,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:14:04,978 INFO L87 Difference]: Start difference. First operand 5547 states and 8473 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:09,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:09,985 INFO L93 Difference]: Finished difference Result 18982 states and 27160 transitions. [2022-01-10 12:14:09,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 12:14:09,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 12:14:09,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:10,012 INFO L225 Difference]: With dead ends: 18982 [2022-01-10 12:14:10,012 INFO L226 Difference]: Without dead ends: 17548 [2022-01-10 12:14:10,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-01-10 12:14:10,021 INFO L933 BasicCegarLoop]: 1590 mSDtfsCounter, 1613 mSDsluCounter, 4072 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 5662 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:10,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1613 Valid, 5662 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:14:10,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17548 states. [2022-01-10 12:14:11,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17548 to 6300. [2022-01-10 12:14:11,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6300 states, 6298 states have (on average 1.5057161003493174) internal successors, (9483), 6299 states have internal predecessors, (9483), 0 states have call successors, (0), 0 states 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 12:14:11,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6300 states to 6300 states and 9483 transitions. [2022-01-10 12:14:11,395 INFO L78 Accepts]: Start accepts. Automaton has 6300 states and 9483 transitions. Word has length 84 [2022-01-10 12:14:11,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:11,395 INFO L470 AbstractCegarLoop]: Abstraction has 6300 states and 9483 transitions. [2022-01-10 12:14:11,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:11,396 INFO L276 IsEmpty]: Start isEmpty. Operand 6300 states and 9483 transitions. [2022-01-10 12:14:11,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 12:14:11,403 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:11,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:11,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 12:14:11,404 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:11,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:11,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1919306185, now seen corresponding path program 1 times [2022-01-10 12:14:11,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:11,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443897225] [2022-01-10 12:14:11,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:11,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:11,555 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 12:14:11,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:11,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443897225] [2022-01-10 12:14:11,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443897225] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:11,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:11,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:14:11,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240790946] [2022-01-10 12:14:11,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:11,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:14:11,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:11,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:14:11,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:14:11,557 INFO L87 Difference]: Start difference. First operand 6300 states and 9483 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:25,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:14:25,232 INFO L93 Difference]: Finished difference Result 49656 states and 72581 transitions. [2022-01-10 12:14:25,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 12:14:25,232 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 12:14:25,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:14:25,291 INFO L225 Difference]: With dead ends: 49656 [2022-01-10 12:14:25,292 INFO L226 Difference]: Without dead ends: 46969 [2022-01-10 12:14:25,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=785, Unknown=0, NotChecked=0, Total=1122 [2022-01-10 12:14:25,308 INFO L933 BasicCegarLoop]: 825 mSDtfsCounter, 8118 mSDsluCounter, 7266 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8118 SdHoareTripleChecker+Valid, 8091 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 12:14:25,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8118 Valid, 8091 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 12:14:25,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46969 states. [2022-01-10 12:14:29,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46969 to 16899. [2022-01-10 12:14:29,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16899 states, 16897 states have (on average 1.4893768124519144) internal successors, (25166), 16898 states have internal predecessors, (25166), 0 states have call successors, (0), 0 states 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 12:14:30,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16899 states to 16899 states and 25166 transitions. [2022-01-10 12:14:30,008 INFO L78 Accepts]: Start accepts. Automaton has 16899 states and 25166 transitions. Word has length 85 [2022-01-10 12:14:30,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:14:30,008 INFO L470 AbstractCegarLoop]: Abstraction has 16899 states and 25166 transitions. [2022-01-10 12:14:30,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:14:30,009 INFO L276 IsEmpty]: Start isEmpty. Operand 16899 states and 25166 transitions. [2022-01-10 12:14:30,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 12:14:30,023 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:14:30,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:14:30,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 12:14:30,024 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:14:30,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:14:30,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1345881989, now seen corresponding path program 1 times [2022-01-10 12:14:30,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:14:30,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657235395] [2022-01-10 12:14:30,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:14:30,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:14:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:14:30,116 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 12:14:30,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:14:30,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657235395] [2022-01-10 12:14:30,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657235395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:14:30,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:14:30,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:14:30,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011159693] [2022-01-10 12:14:30,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:14:30,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:14:30,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:14:30,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:14:30,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:14:30,119 INFO L87 Difference]: Start difference. First operand 16899 states and 25166 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)