/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec7_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:47:13,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:47:13,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:47:13,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:47:13,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:47:13,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:47:13,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:47:13,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:47:13,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:47:13,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:47:13,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:47:13,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:47:13,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:47:13,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:47:13,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:47:13,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:47:13,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:47:13,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:47:13,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:47:13,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:47:13,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:47:13,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:47:13,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:47:13,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:47:13,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:47:13,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:47:13,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:47:13,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:47:13,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:47:13,260 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:47:13,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:47:13,261 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:47:13,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:47:13,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:47:13,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:47:13,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:47:13,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:47:13,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:47:13,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:47:13,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:47:13,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:47:13,268 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 05:47:13,306 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:47:13,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:47:13,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:47:13,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:47:13,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:47:13,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:47:13,310 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:47:13,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:47:13,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:47:13,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:47:13,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:47:13,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:47:13,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:47:13,311 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:47:13,311 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:47:13,311 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:47:13,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:47:13,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:47:13,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:47:13,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:47:13,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:47:13,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:47:13,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:47:13,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:47:13,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:47:13,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:47:13,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:47:13,313 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:47:13,313 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:47:13,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:47:13,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:47:13,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:47:13,314 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:47:13,315 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:47:13,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:47:13,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:47:13,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:47:13,512 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:47:13,512 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:47:13,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product30.cil.c [2022-01-11 05:47:13,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86eb88764/07d0b61af47e4ddf8f5d8856aadc76a9/FLAG94f97d25b [2022-01-11 05:47:13,953 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:47:13,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product30.cil.c [2022-01-11 05:47:13,970 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86eb88764/07d0b61af47e4ddf8f5d8856aadc76a9/FLAG94f97d25b [2022-01-11 05:47:14,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86eb88764/07d0b61af47e4ddf8f5d8856aadc76a9 [2022-01-11 05:47:14,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:47:14,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:47:14,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:47:14,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:47:14,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:47:14,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:47:14" (1/1) ... [2022-01-11 05:47:14,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1902b244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:47:14, skipping insertion in model container [2022-01-11 05:47:14,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:47:14" (1/1) ... [2022-01-11 05:47:14,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:47:14,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:47:14,678 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_spec7_product30.cil.c[50838,50851] [2022-01-11 05:47:14,743 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:47:14,759 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 05:47:14,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:47:14,828 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_spec7_product30.cil.c[50838,50851] [2022-01-11 05:47:14,856 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:47:14,861 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:47:14,909 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_spec7_product30.cil.c[50838,50851] [2022-01-11 05:47:14,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:47:14,944 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:47:14,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:47:14 WrapperNode [2022-01-11 05:47:14,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:47:14,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:47:14,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:47:14,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:47:14,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:47:14" (1/1) ... [2022-01-11 05:47:14,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:47:14" (1/1) ... [2022-01-11 05:47:15,057 INFO L137 Inliner]: procedures = 133, calls = 215, calls flagged for inlining = 128, calls inlined = 161, statements flattened = 2364 [2022-01-11 05:47:15,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:47:15,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:47:15,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:47:15,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:47:15,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:47:14" (1/1) ... [2022-01-11 05:47:15,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:47:14" (1/1) ... [2022-01-11 05:47:15,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:47:14" (1/1) ... [2022-01-11 05:47:15,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:47:14" (1/1) ... [2022-01-11 05:47:15,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:47:14" (1/1) ... [2022-01-11 05:47:15,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:47:14" (1/1) ... [2022-01-11 05:47:15,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:47:14" (1/1) ... [2022-01-11 05:47:15,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:47:15,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:47:15,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:47:15,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:47:15,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:47:14" (1/1) ... [2022-01-11 05:47:15,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:47:15,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:47:15,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 05:47:15,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 05:47:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-11 05:47:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:47:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:47:15,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:47:15,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:47:15,413 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:47:15,414 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:47:16,409 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:47:16,423 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:47:16,423 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 05:47:16,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:47:16 BoogieIcfgContainer [2022-01-11 05:47:16,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:47:16,426 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:47:16,426 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:47:16,426 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:47:16,429 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:47:16" (1/1) ... [2022-01-11 05:47:16,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:47:16 BasicIcfg [2022-01-11 05:47:16,701 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:47:16,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:47:16,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:47:16,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:47:16,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:47:14" (1/4) ... [2022-01-11 05:47:16,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477a9262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:47:16, skipping insertion in model container [2022-01-11 05:47:16,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:47:14" (2/4) ... [2022-01-11 05:47:16,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477a9262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:47:16, skipping insertion in model container [2022-01-11 05:47:16,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:47:16" (3/4) ... [2022-01-11 05:47:16,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@477a9262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:47:16, skipping insertion in model container [2022-01-11 05:47:16,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:47:16" (4/4) ... [2022-01-11 05:47:16,708 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product30.cil.cTransformedIcfg [2022-01-11 05:47:16,713 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:47:16,713 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 05:47:16,756 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:47:16,760 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 05:47:16,760 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 05:47:16,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 550 states, 547 states have (on average 1.6873857404021937) internal successors, (923), 549 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:16,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 05:47:16,798 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:16,799 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] [2022-01-11 05:47:16,799 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:16,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:16,803 INFO L85 PathProgramCache]: Analyzing trace with hash -32822343, now seen corresponding path program 1 times [2022-01-11 05:47:16,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:16,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810498763] [2022-01-11 05:47:16,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:16,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:17,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:17,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:17,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810498763] [2022-01-11 05:47:17,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810498763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:17,179 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:17,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:47:17,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205959240] [2022-01-11 05:47:17,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:17,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 05:47:17,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:17,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 05:47:17,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:47:17,212 INFO L87 Difference]: Start difference. First operand has 550 states, 547 states have (on average 1.6873857404021937) internal successors, (923), 549 states have internal predecessors, (923), 0 states have call successors, (0), 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 29.5) internal successors, (59), 2 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) [2022-01-11 05:47:17,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:17,273 INFO L93 Difference]: Finished difference Result 839 states and 1386 transitions. [2022-01-11 05:47:17,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 05:47:17,276 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 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 [2022-01-11 05:47:17,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:17,290 INFO L225 Difference]: With dead ends: 839 [2022-01-11 05:47:17,290 INFO L226 Difference]: Without dead ends: 482 [2022-01-11 05:47:17,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:47:17,298 INFO L933 BasicCegarLoop]: 917 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, 917 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:17,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:47:17,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-01-11 05:47:17,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2022-01-11 05:47:17,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 480 states have (on average 1.6979166666666667) internal successors, (815), 481 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:17,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 815 transitions. [2022-01-11 05:47:17,356 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 815 transitions. Word has length 59 [2022-01-11 05:47:17,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:17,356 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 815 transitions. [2022-01-11 05:47:17,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 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) [2022-01-11 05:47:17,356 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 815 transitions. [2022-01-11 05:47:17,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-11 05:47:17,358 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:17,358 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:47:17,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:47:17,358 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:17,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:17,359 INFO L85 PathProgramCache]: Analyzing trace with hash 146773949, now seen corresponding path program 1 times [2022-01-11 05:47:17,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:17,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793412497] [2022-01-11 05:47:17,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:17,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:17,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:17,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:17,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793412497] [2022-01-11 05:47:17,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793412497] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:17,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:17,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:47:17,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58133812] [2022-01-11 05:47:17,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:17,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:47:17,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:17,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:47:17,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:47:17,535 INFO L87 Difference]: Start difference. First operand 482 states and 815 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:17,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:17,612 INFO L93 Difference]: Finished difference Result 945 states and 1602 transitions. [2022-01-11 05:47:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:47:17,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-11 05:47:17,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:17,615 INFO L225 Difference]: With dead ends: 945 [2022-01-11 05:47:17,616 INFO L226 Difference]: Without dead ends: 482 [2022-01-11 05:47:17,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:47:17,618 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 790 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:17,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [790 Valid, 809 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:47:17,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-01-11 05:47:17,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2022-01-11 05:47:17,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 480 states have (on average 1.69375) internal successors, (813), 481 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:17,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 813 transitions. [2022-01-11 05:47:17,649 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 813 transitions. Word has length 60 [2022-01-11 05:47:17,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:17,650 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 813 transitions. [2022-01-11 05:47:17,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:17,652 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 813 transitions. [2022-01-11 05:47:17,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 05:47:17,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:17,659 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] [2022-01-11 05:47:17,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:47:17,659 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:17,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:17,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1724585475, now seen corresponding path program 1 times [2022-01-11 05:47:17,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:17,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265843489] [2022-01-11 05:47:17,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:17,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:17,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:17,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:17,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265843489] [2022-01-11 05:47:17,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265843489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:17,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:17,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:47:17,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716425229] [2022-01-11 05:47:17,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:17,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:47:17,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:17,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:47:17,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:47:17,796 INFO L87 Difference]: Start difference. First operand 482 states and 813 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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) [2022-01-11 05:47:17,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:17,990 INFO L93 Difference]: Finished difference Result 2278 states and 3861 transitions. [2022-01-11 05:47:17,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:47:17,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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 [2022-01-11 05:47:17,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:17,998 INFO L225 Difference]: With dead ends: 2278 [2022-01-11 05:47:17,998 INFO L226 Difference]: Without dead ends: 1820 [2022-01-11 05:47:18,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:47:18,004 INFO L933 BasicCegarLoop]: 1549 mSDtfsCounter, 3848 mSDsluCounter, 2311 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3848 SdHoareTripleChecker+Valid, 3860 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:18,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3848 Valid, 3860 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:47:18,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2022-01-11 05:47:18,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 482. [2022-01-11 05:47:18,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 480 states have (on average 1.6916666666666667) internal successors, (812), 481 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:18,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 812 transitions. [2022-01-11 05:47:18,027 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 812 transitions. Word has length 62 [2022-01-11 05:47:18,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:18,027 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 812 transitions. [2022-01-11 05:47:18,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 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) [2022-01-11 05:47:18,028 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 812 transitions. [2022-01-11 05:47:18,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 05:47:18,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:18,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:47:18,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 05:47:18,029 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:18,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:18,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1743308307, now seen corresponding path program 1 times [2022-01-11 05:47:18,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:18,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34861046] [2022-01-11 05:47:18,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:18,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:18,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:18,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:18,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34861046] [2022-01-11 05:47:18,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34861046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:18,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:18,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:47:18,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369475868] [2022-01-11 05:47:18,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:18,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:47:18,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:18,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:47:18,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:47:18,122 INFO L87 Difference]: Start difference. First operand 482 states and 812 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:18,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:18,172 INFO L93 Difference]: Finished difference Result 949 states and 1602 transitions. [2022-01-11 05:47:18,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:47:18,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-11 05:47:18,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:18,175 INFO L225 Difference]: With dead ends: 949 [2022-01-11 05:47:18,175 INFO L226 Difference]: Without dead ends: 496 [2022-01-11 05:47:18,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:47:18,180 INFO L933 BasicCegarLoop]: 826 mSDtfsCounter, 791 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:18,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 848 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:47:18,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-01-11 05:47:18,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 482. [2022-01-11 05:47:18,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 480 states have (on average 1.6895833333333334) internal successors, (811), 481 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:18,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 811 transitions. [2022-01-11 05:47:18,199 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 811 transitions. Word has length 63 [2022-01-11 05:47:18,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:18,200 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 811 transitions. [2022-01-11 05:47:18,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:18,200 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 811 transitions. [2022-01-11 05:47:18,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 05:47:18,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:18,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:47:18,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 05:47:18,202 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:18,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:18,202 INFO L85 PathProgramCache]: Analyzing trace with hash -498691716, now seen corresponding path program 1 times [2022-01-11 05:47:18,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:18,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140529499] [2022-01-11 05:47:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:18,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:18,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:18,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:18,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140529499] [2022-01-11 05:47:18,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140529499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:18,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:18,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:47:18,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804504548] [2022-01-11 05:47:18,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:18,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:47:18,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:18,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:47:18,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:47:18,335 INFO L87 Difference]: Start difference. First operand 482 states and 811 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:18,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:18,459 INFO L93 Difference]: Finished difference Result 1380 states and 2333 transitions. [2022-01-11 05:47:18,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:47:18,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-11 05:47:18,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:18,463 INFO L225 Difference]: With dead ends: 1380 [2022-01-11 05:47:18,463 INFO L226 Difference]: Without dead ends: 932 [2022-01-11 05:47:18,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:47:18,465 INFO L933 BasicCegarLoop]: 820 mSDtfsCounter, 3771 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3771 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:18,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3771 Valid, 1654 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:47:18,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2022-01-11 05:47:18,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 482. [2022-01-11 05:47:18,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 480 states have (on average 1.6854166666666666) internal successors, (809), 481 states have internal predecessors, (809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:18,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 809 transitions. [2022-01-11 05:47:18,495 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 809 transitions. Word has length 64 [2022-01-11 05:47:18,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:18,495 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 809 transitions. [2022-01-11 05:47:18,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:18,495 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 809 transitions. [2022-01-11 05:47:18,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 05:47:18,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:18,496 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] [2022-01-11 05:47:18,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 05:47:18,496 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:18,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:18,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1185247553, now seen corresponding path program 1 times [2022-01-11 05:47:18,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:18,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089584281] [2022-01-11 05:47:18,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:18,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:18,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:18,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:18,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089584281] [2022-01-11 05:47:18,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089584281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:18,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:18,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:47:18,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056350965] [2022-01-11 05:47:18,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:18,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:47:18,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:18,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:47:18,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:47:18,632 INFO L87 Difference]: Start difference. First operand 482 states and 809 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 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) [2022-01-11 05:47:19,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:19,251 INFO L93 Difference]: Finished difference Result 2243 states and 3604 transitions. [2022-01-11 05:47:19,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 05:47:19,251 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 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 [2022-01-11 05:47:19,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:19,257 INFO L225 Difference]: With dead ends: 2243 [2022-01-11 05:47:19,257 INFO L226 Difference]: Without dead ends: 2052 [2022-01-11 05:47:19,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-11 05:47:19,259 INFO L933 BasicCegarLoop]: 991 mSDtfsCounter, 7515 mSDsluCounter, 5854 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7515 SdHoareTripleChecker+Valid, 6845 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:19,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7515 Valid, 6845 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 05:47:19,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2022-01-11 05:47:19,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 868. [2022-01-11 05:47:19,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 868 states, 866 states have (on average 1.699769053117783) internal successors, (1472), 867 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:19,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1472 transitions. [2022-01-11 05:47:19,375 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1472 transitions. Word has length 66 [2022-01-11 05:47:19,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:19,376 INFO L470 AbstractCegarLoop]: Abstraction has 868 states and 1472 transitions. [2022-01-11 05:47:19,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 8 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) [2022-01-11 05:47:19,376 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1472 transitions. [2022-01-11 05:47:19,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 05:47:19,377 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:19,377 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] [2022-01-11 05:47:19,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 05:47:19,377 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:19,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:19,377 INFO L85 PathProgramCache]: Analyzing trace with hash 647646833, now seen corresponding path program 1 times [2022-01-11 05:47:19,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:19,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840829153] [2022-01-11 05:47:19,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:19,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:19,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:19,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:19,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840829153] [2022-01-11 05:47:19,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840829153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:19,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:19,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:47:19,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366376697] [2022-01-11 05:47:19,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:19,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:47:19,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:19,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:47:19,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:47:19,473 INFO L87 Difference]: Start difference. First operand 868 states and 1472 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:20,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:20,046 INFO L93 Difference]: Finished difference Result 3556 states and 5754 transitions. [2022-01-11 05:47:20,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 05:47:20,046 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-11 05:47:20,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:20,056 INFO L225 Difference]: With dead ends: 3556 [2022-01-11 05:47:20,056 INFO L226 Difference]: Without dead ends: 3235 [2022-01-11 05:47:20,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-11 05:47:20,058 INFO L933 BasicCegarLoop]: 851 mSDtfsCounter, 7503 mSDsluCounter, 5145 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7503 SdHoareTripleChecker+Valid, 5996 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:20,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7503 Valid, 5996 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:47:20,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3235 states. [2022-01-11 05:47:20,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3235 to 1643. [2022-01-11 05:47:20,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1643 states, 1641 states have (on average 1.7081048141377209) internal successors, (2803), 1642 states have internal predecessors, (2803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:20,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 2803 transitions. [2022-01-11 05:47:20,183 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 2803 transitions. Word has length 67 [2022-01-11 05:47:20,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:20,184 INFO L470 AbstractCegarLoop]: Abstraction has 1643 states and 2803 transitions. [2022-01-11 05:47:20,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:20,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 2803 transitions. [2022-01-11 05:47:20,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 05:47:20,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:20,185 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] [2022-01-11 05:47:20,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 05:47:20,185 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:20,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:20,186 INFO L85 PathProgramCache]: Analyzing trace with hash 238822608, now seen corresponding path program 1 times [2022-01-11 05:47:20,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:20,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623810068] [2022-01-11 05:47:20,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:20,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:20,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:20,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:20,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623810068] [2022-01-11 05:47:20,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623810068] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:20,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:20,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:47:20,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581524434] [2022-01-11 05:47:20,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:20,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:47:20,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:20,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:47:20,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:47:20,265 INFO L87 Difference]: Start difference. First operand 1643 states and 2803 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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) [2022-01-11 05:47:20,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:20,960 INFO L93 Difference]: Finished difference Result 8410 states and 14171 transitions. [2022-01-11 05:47:20,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:47:20,960 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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 [2022-01-11 05:47:20,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:20,982 INFO L225 Difference]: With dead ends: 8410 [2022-01-11 05:47:20,982 INFO L226 Difference]: Without dead ends: 7992 [2022-01-11 05:47:20,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:47:20,983 INFO L933 BasicCegarLoop]: 996 mSDtfsCounter, 4737 mSDsluCounter, 4232 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4737 SdHoareTripleChecker+Valid, 5228 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:20,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4737 Valid, 5228 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:47:20,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7992 states. [2022-01-11 05:47:21,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7992 to 3249. [2022-01-11 05:47:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3249 states, 3247 states have (on average 1.7083461656914074) internal successors, (5547), 3248 states have internal predecessors, (5547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:21,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 5547 transitions. [2022-01-11 05:47:21,256 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 5547 transitions. Word has length 67 [2022-01-11 05:47:21,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:21,256 INFO L470 AbstractCegarLoop]: Abstraction has 3249 states and 5547 transitions. [2022-01-11 05:47:21,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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) [2022-01-11 05:47:21,256 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 5547 transitions. [2022-01-11 05:47:21,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 05:47:21,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:21,259 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] [2022-01-11 05:47:21,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 05:47:21,259 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:21,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:21,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1513186580, now seen corresponding path program 1 times [2022-01-11 05:47:21,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:21,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795432627] [2022-01-11 05:47:21,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:21,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:21,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:21,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:21,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795432627] [2022-01-11 05:47:21,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795432627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:21,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:21,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:47:21,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357964463] [2022-01-11 05:47:21,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:21,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:47:21,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:21,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:47:21,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:47:21,334 INFO L87 Difference]: Start difference. First operand 3249 states and 5547 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:22,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:22,232 INFO L93 Difference]: Finished difference Result 9929 states and 16508 transitions. [2022-01-11 05:47:22,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:47:22,233 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 05:47:22,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:22,259 INFO L225 Difference]: With dead ends: 9929 [2022-01-11 05:47:22,260 INFO L226 Difference]: Without dead ends: 9274 [2022-01-11 05:47:22,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:47:22,264 INFO L933 BasicCegarLoop]: 1578 mSDtfsCounter, 4406 mSDsluCounter, 5172 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4406 SdHoareTripleChecker+Valid, 6750 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:22,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4406 Valid, 6750 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:47:22,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9274 states. [2022-01-11 05:47:22,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9274 to 3265. [2022-01-11 05:47:22,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3265 states, 3263 states have (on average 1.7048728164266014) internal successors, (5563), 3264 states have internal predecessors, (5563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3265 states to 3265 states and 5563 transitions. [2022-01-11 05:47:22,500 INFO L78 Accepts]: Start accepts. Automaton has 3265 states and 5563 transitions. Word has length 68 [2022-01-11 05:47:22,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:22,500 INFO L470 AbstractCegarLoop]: Abstraction has 3265 states and 5563 transitions. [2022-01-11 05:47:22,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:22,500 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states and 5563 transitions. [2022-01-11 05:47:22,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 05:47:22,503 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:22,503 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] [2022-01-11 05:47:22,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 05:47:22,503 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:22,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:22,503 INFO L85 PathProgramCache]: Analyzing trace with hash -857153354, now seen corresponding path program 1 times [2022-01-11 05:47:22,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:22,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989518738] [2022-01-11 05:47:22,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:22,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:22,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:22,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989518738] [2022-01-11 05:47:22,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989518738] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:22,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:22,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:47:22,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749035809] [2022-01-11 05:47:22,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:22,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:47:22,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:22,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:47:22,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:47:22,560 INFO L87 Difference]: Start difference. First operand 3265 states and 5563 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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) [2022-01-11 05:47:23,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:23,022 INFO L93 Difference]: Finished difference Result 9594 states and 16386 transitions. [2022-01-11 05:47:23,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:47:23,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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 [2022-01-11 05:47:23,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:23,033 INFO L225 Difference]: With dead ends: 9594 [2022-01-11 05:47:23,033 INFO L226 Difference]: Without dead ends: 6366 [2022-01-11 05:47:23,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:47:23,037 INFO L933 BasicCegarLoop]: 1521 mSDtfsCounter, 2364 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2364 SdHoareTripleChecker+Valid, 2283 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:23,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2364 Valid, 2283 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:47:23,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6366 states. [2022-01-11 05:47:23,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6366 to 3265. [2022-01-11 05:47:23,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3265 states, 3263 states have (on average 1.704259883542752) internal successors, (5561), 3264 states have internal predecessors, (5561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:23,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3265 states to 3265 states and 5561 transitions. [2022-01-11 05:47:23,268 INFO L78 Accepts]: Start accepts. Automaton has 3265 states and 5561 transitions. Word has length 68 [2022-01-11 05:47:23,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:23,269 INFO L470 AbstractCegarLoop]: Abstraction has 3265 states and 5561 transitions. [2022-01-11 05:47:23,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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) [2022-01-11 05:47:23,269 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states and 5561 transitions. [2022-01-11 05:47:23,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 05:47:23,271 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:23,271 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] [2022-01-11 05:47:23,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 05:47:23,272 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:23,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:23,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1160188135, now seen corresponding path program 1 times [2022-01-11 05:47:23,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:23,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515218477] [2022-01-11 05:47:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:23,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:23,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:23,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:23,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515218477] [2022-01-11 05:47:23,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515218477] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:23,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:23,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:47:23,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381457540] [2022-01-11 05:47:23,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:23,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:47:23,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:23,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:47:23,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:47:23,334 INFO L87 Difference]: Start difference. First operand 3265 states and 5561 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) [2022-01-11 05:47:23,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:23,749 INFO L93 Difference]: Finished difference Result 5515 states and 9131 transitions. [2022-01-11 05:47:23,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:47:23,750 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 [2022-01-11 05:47:23,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:23,757 INFO L225 Difference]: With dead ends: 5515 [2022-01-11 05:47:23,757 INFO L226 Difference]: Without dead ends: 4176 [2022-01-11 05:47:23,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:47:23,759 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 1965 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1965 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:23,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1965 Valid, 1939 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:47:23,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4176 states. [2022-01-11 05:47:24,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4176 to 3265. [2022-01-11 05:47:24,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3265 states, 3263 states have (on average 1.6993564204719582) internal successors, (5545), 3264 states have internal predecessors, (5545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:24,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3265 states to 3265 states and 5545 transitions. [2022-01-11 05:47:24,055 INFO L78 Accepts]: Start accepts. Automaton has 3265 states and 5545 transitions. Word has length 69 [2022-01-11 05:47:24,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:24,055 INFO L470 AbstractCegarLoop]: Abstraction has 3265 states and 5545 transitions. [2022-01-11 05:47:24,055 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) [2022-01-11 05:47:24,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3265 states and 5545 transitions. [2022-01-11 05:47:24,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 05:47:24,058 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:24,058 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] [2022-01-11 05:47:24,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 05:47:24,058 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:24,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:24,058 INFO L85 PathProgramCache]: Analyzing trace with hash 394788364, now seen corresponding path program 1 times [2022-01-11 05:47:24,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:24,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088768261] [2022-01-11 05:47:24,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:24,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:24,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:24,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:24,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088768261] [2022-01-11 05:47:24,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088768261] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:24,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:24,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:47:24,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427894730] [2022-01-11 05:47:24,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:24,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 05:47:24,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:24,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 05:47:24,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:47:24,182 INFO L87 Difference]: Start difference. First operand 3265 states and 5545 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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) [2022-01-11 05:47:24,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:24,972 INFO L93 Difference]: Finished difference Result 6599 states and 10720 transitions. [2022-01-11 05:47:24,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 05:47:24,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 [2022-01-11 05:47:24,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:24,980 INFO L225 Difference]: With dead ends: 6599 [2022-01-11 05:47:24,980 INFO L226 Difference]: Without dead ends: 5634 [2022-01-11 05:47:24,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-01-11 05:47:24,981 INFO L933 BasicCegarLoop]: 1095 mSDtfsCounter, 3587 mSDsluCounter, 4137 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3587 SdHoareTripleChecker+Valid, 5232 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:24,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3587 Valid, 5232 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:47:24,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5634 states. [2022-01-11 05:47:25,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5634 to 3651. [2022-01-11 05:47:25,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3651 states, 3649 states have (on average 1.6873115922170459) internal successors, (6157), 3650 states have internal predecessors, (6157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3651 states to 3651 states and 6157 transitions. [2022-01-11 05:47:25,246 INFO L78 Accepts]: Start accepts. Automaton has 3651 states and 6157 transitions. Word has length 69 [2022-01-11 05:47:25,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:25,247 INFO L470 AbstractCegarLoop]: Abstraction has 3651 states and 6157 transitions. [2022-01-11 05:47:25,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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) [2022-01-11 05:47:25,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3651 states and 6157 transitions. [2022-01-11 05:47:25,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 05:47:25,249 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:25,249 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] [2022-01-11 05:47:25,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 05:47:25,250 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:25,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:25,250 INFO L85 PathProgramCache]: Analyzing trace with hash 217890162, now seen corresponding path program 1 times [2022-01-11 05:47:25,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:25,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87379246] [2022-01-11 05:47:25,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:25,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:25,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:25,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:25,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87379246] [2022-01-11 05:47:25,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87379246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:25,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:25,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:47:25,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720604193] [2022-01-11 05:47:25,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:25,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:47:25,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:25,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:47:25,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:47:25,299 INFO L87 Difference]: Start difference. First operand 3651 states and 6157 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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) [2022-01-11 05:47:25,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:25,645 INFO L93 Difference]: Finished difference Result 4499 states and 7454 transitions. [2022-01-11 05:47:25,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:47:25,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 [2022-01-11 05:47:25,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:25,651 INFO L225 Difference]: With dead ends: 4499 [2022-01-11 05:47:25,651 INFO L226 Difference]: Without dead ends: 4090 [2022-01-11 05:47:25,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:47:25,652 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 839 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1837 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:25,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [839 Valid, 1837 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:47:25,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4090 states. [2022-01-11 05:47:25,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4090 to 3651. [2022-01-11 05:47:25,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3651 states, 3649 states have (on average 1.6867634968484517) internal successors, (6155), 3650 states have internal predecessors, (6155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:25,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3651 states to 3651 states and 6155 transitions. [2022-01-11 05:47:25,904 INFO L78 Accepts]: Start accepts. Automaton has 3651 states and 6155 transitions. Word has length 69 [2022-01-11 05:47:25,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:25,905 INFO L470 AbstractCegarLoop]: Abstraction has 3651 states and 6155 transitions. [2022-01-11 05:47:25,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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) [2022-01-11 05:47:25,905 INFO L276 IsEmpty]: Start isEmpty. Operand 3651 states and 6155 transitions. [2022-01-11 05:47:25,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 05:47:25,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:25,908 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] [2022-01-11 05:47:25,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 05:47:25,909 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:25,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:25,909 INFO L85 PathProgramCache]: Analyzing trace with hash 229206289, now seen corresponding path program 1 times [2022-01-11 05:47:25,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:25,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609974945] [2022-01-11 05:47:25,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:25,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:25,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:25,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:25,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:25,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609974945] [2022-01-11 05:47:25,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609974945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:25,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:25,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:47:25,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866620054] [2022-01-11 05:47:25,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:25,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:47:25,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:25,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:47:25,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:47:25,995 INFO L87 Difference]: Start difference. First operand 3651 states and 6155 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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) [2022-01-11 05:47:26,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:26,746 INFO L93 Difference]: Finished difference Result 6687 states and 10959 transitions. [2022-01-11 05:47:26,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:47:26,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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 [2022-01-11 05:47:26,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:26,755 INFO L225 Difference]: With dead ends: 6687 [2022-01-11 05:47:26,756 INFO L226 Difference]: Without dead ends: 5442 [2022-01-11 05:47:26,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:47:26,759 INFO L933 BasicCegarLoop]: 1310 mSDtfsCounter, 1775 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1775 SdHoareTripleChecker+Valid, 4085 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:26,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1775 Valid, 4085 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:47:26,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5442 states. [2022-01-11 05:47:27,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5442 to 3809. [2022-01-11 05:47:27,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3809 states, 3807 states have (on average 1.6740215392697662) internal successors, (6373), 3808 states have internal predecessors, (6373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3809 states to 3809 states and 6373 transitions. [2022-01-11 05:47:27,135 INFO L78 Accepts]: Start accepts. Automaton has 3809 states and 6373 transitions. Word has length 69 [2022-01-11 05:47:27,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:27,135 INFO L470 AbstractCegarLoop]: Abstraction has 3809 states and 6373 transitions. [2022-01-11 05:47:27,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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) [2022-01-11 05:47:27,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3809 states and 6373 transitions. [2022-01-11 05:47:27,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 05:47:27,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:27,152 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] [2022-01-11 05:47:27,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 05:47:27,152 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:27,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:27,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1453293624, now seen corresponding path program 1 times [2022-01-11 05:47:27,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:27,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982864422] [2022-01-11 05:47:27,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:27,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:27,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:27,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:27,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982864422] [2022-01-11 05:47:27,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982864422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:27,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:27,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:47:27,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060331397] [2022-01-11 05:47:27,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:27,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:47:27,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:27,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:47:27,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:47:27,266 INFO L87 Difference]: Start difference. First operand 3809 states and 6373 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:29,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:29,119 INFO L93 Difference]: Finished difference Result 19915 states and 32993 transitions. [2022-01-11 05:47:29,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:47:29,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-11 05:47:29,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:29,144 INFO L225 Difference]: With dead ends: 19915 [2022-01-11 05:47:29,145 INFO L226 Difference]: Without dead ends: 18752 [2022-01-11 05:47:29,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:47:29,148 INFO L933 BasicCegarLoop]: 1148 mSDtfsCounter, 4062 mSDsluCounter, 3589 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4062 SdHoareTripleChecker+Valid, 4737 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:29,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4062 Valid, 4737 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:47:29,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18752 states. [2022-01-11 05:47:29,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18752 to 7556. [2022-01-11 05:47:29,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7556 states, 7554 states have (on average 1.675536139793487) internal successors, (12657), 7555 states have internal predecessors, (12657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7556 states to 7556 states and 12657 transitions. [2022-01-11 05:47:29,855 INFO L78 Accepts]: Start accepts. Automaton has 7556 states and 12657 transitions. Word has length 70 [2022-01-11 05:47:29,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:29,855 INFO L470 AbstractCegarLoop]: Abstraction has 7556 states and 12657 transitions. [2022-01-11 05:47:29,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:29,855 INFO L276 IsEmpty]: Start isEmpty. Operand 7556 states and 12657 transitions. [2022-01-11 05:47:29,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 05:47:29,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:29,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:47:29,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 05:47:29,861 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:29,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:29,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1136498805, now seen corresponding path program 1 times [2022-01-11 05:47:29,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:29,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422637405] [2022-01-11 05:47:29,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:29,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:29,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:29,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422637405] [2022-01-11 05:47:29,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422637405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:29,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:29,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:47:29,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474450292] [2022-01-11 05:47:29,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:29,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 05:47:29,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:29,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 05:47:29,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:47:29,937 INFO L87 Difference]: Start difference. First operand 7556 states and 12657 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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) [2022-01-11 05:47:30,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:30,785 INFO L93 Difference]: Finished difference Result 11302 states and 18634 transitions. [2022-01-11 05:47:30,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:47:30,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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 [2022-01-11 05:47:30,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:30,794 INFO L225 Difference]: With dead ends: 11302 [2022-01-11 05:47:30,794 INFO L226 Difference]: Without dead ends: 7852 [2022-01-11 05:47:30,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2022-01-11 05:47:30,798 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 1782 mSDsluCounter, 3321 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1782 SdHoareTripleChecker+Valid, 4152 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:30,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1782 Valid, 4152 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:47:30,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7852 states. [2022-01-11 05:47:31,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7852 to 7494. [2022-01-11 05:47:31,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7494 states, 7492 states have (on average 1.6720501868659905) internal successors, (12527), 7493 states have internal predecessors, (12527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:31,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7494 states to 7494 states and 12527 transitions. [2022-01-11 05:47:31,510 INFO L78 Accepts]: Start accepts. Automaton has 7494 states and 12527 transitions. Word has length 70 [2022-01-11 05:47:31,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:31,510 INFO L470 AbstractCegarLoop]: Abstraction has 7494 states and 12527 transitions. [2022-01-11 05:47:31,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 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) [2022-01-11 05:47:31,513 INFO L276 IsEmpty]: Start isEmpty. Operand 7494 states and 12527 transitions. [2022-01-11 05:47:31,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 05:47:31,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:31,518 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:47:31,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 05:47:31,518 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:31,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:31,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1171430605, now seen corresponding path program 1 times [2022-01-11 05:47:31,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:31,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667662479] [2022-01-11 05:47:31,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:31,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:31,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:31,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667662479] [2022-01-11 05:47:31,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667662479] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:31,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:31,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:47:31,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146213203] [2022-01-11 05:47:31,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:31,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 05:47:31,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:31,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 05:47:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:47:31,622 INFO L87 Difference]: Start difference. First operand 7494 states and 12527 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:32,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:32,685 INFO L93 Difference]: Finished difference Result 11131 states and 18216 transitions. [2022-01-11 05:47:32,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 05:47:32,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-11 05:47:32,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:32,695 INFO L225 Difference]: With dead ends: 11131 [2022-01-11 05:47:32,695 INFO L226 Difference]: Without dead ends: 8999 [2022-01-11 05:47:32,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2022-01-11 05:47:32,698 INFO L933 BasicCegarLoop]: 820 mSDtfsCounter, 3562 mSDsluCounter, 2710 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3562 SdHoareTripleChecker+Valid, 3530 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:32,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3562 Valid, 3530 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:47:32,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8999 states. [2022-01-11 05:47:33,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8999 to 7480. [2022-01-11 05:47:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7480 states, 7478 states have (on average 1.6714362128911473) internal successors, (12499), 7479 states have internal predecessors, (12499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:33,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7480 states to 7480 states and 12499 transitions. [2022-01-11 05:47:33,419 INFO L78 Accepts]: Start accepts. Automaton has 7480 states and 12499 transitions. Word has length 71 [2022-01-11 05:47:33,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:33,420 INFO L470 AbstractCegarLoop]: Abstraction has 7480 states and 12499 transitions. [2022-01-11 05:47:33,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:33,420 INFO L276 IsEmpty]: Start isEmpty. Operand 7480 states and 12499 transitions. [2022-01-11 05:47:33,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 05:47:33,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:33,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:47:33,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 05:47:33,439 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:33,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:33,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1367944110, now seen corresponding path program 1 times [2022-01-11 05:47:33,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:33,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216817211] [2022-01-11 05:47:33,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:33,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:33,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:33,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:33,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:33,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216817211] [2022-01-11 05:47:33,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216817211] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:33,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:33,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:47:33,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283564608] [2022-01-11 05:47:33,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:33,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:47:33,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:33,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:47:33,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:47:33,511 INFO L87 Difference]: Start difference. First operand 7480 states and 12499 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:36,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:36,428 INFO L93 Difference]: Finished difference Result 21858 states and 34845 transitions. [2022-01-11 05:47:36,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:47:36,429 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-11 05:47:36,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:36,456 INFO L225 Difference]: With dead ends: 21858 [2022-01-11 05:47:36,456 INFO L226 Difference]: Without dead ends: 19688 [2022-01-11 05:47:36,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:47:36,464 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 2137 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2137 SdHoareTripleChecker+Valid, 3281 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:36,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2137 Valid, 3281 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:47:36,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19688 states. [2022-01-11 05:47:37,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19688 to 10666. [2022-01-11 05:47:37,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10666 states, 10664 states have (on average 1.6271567891972993) internal successors, (17352), 10665 states have internal predecessors, (17352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:37,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10666 states to 10666 states and 17352 transitions. [2022-01-11 05:47:37,830 INFO L78 Accepts]: Start accepts. Automaton has 10666 states and 17352 transitions. Word has length 71 [2022-01-11 05:47:37,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:37,830 INFO L470 AbstractCegarLoop]: Abstraction has 10666 states and 17352 transitions. [2022-01-11 05:47:37,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:37,831 INFO L276 IsEmpty]: Start isEmpty. Operand 10666 states and 17352 transitions. [2022-01-11 05:47:37,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-11 05:47:37,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:37,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:47:37,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 05:47:37,837 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:37,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:37,837 INFO L85 PathProgramCache]: Analyzing trace with hash 544356820, now seen corresponding path program 1 times [2022-01-11 05:47:37,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:37,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946849154] [2022-01-11 05:47:37,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:37,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:37,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:37,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946849154] [2022-01-11 05:47:37,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946849154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:37,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:37,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:47:37,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877869349] [2022-01-11 05:47:37,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:37,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:47:37,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:37,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:47:37,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:47:37,917 INFO L87 Difference]: Start difference. First operand 10666 states and 17352 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:40,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:40,809 INFO L93 Difference]: Finished difference Result 19039 states and 30406 transitions. [2022-01-11 05:47:40,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:47:40,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-11 05:47:40,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:40,830 INFO L225 Difference]: With dead ends: 19039 [2022-01-11 05:47:40,831 INFO L226 Difference]: Without dead ends: 19028 [2022-01-11 05:47:40,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:47:40,833 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 1257 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:40,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1257 Valid, 2955 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:47:40,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19028 states. [2022-01-11 05:47:42,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19028 to 10743. [2022-01-11 05:47:42,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10743 states, 10741 states have (on average 1.6223815287217205) internal successors, (17426), 10742 states have internal predecessors, (17426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:42,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10743 states to 10743 states and 17426 transitions. [2022-01-11 05:47:42,299 INFO L78 Accepts]: Start accepts. Automaton has 10743 states and 17426 transitions. Word has length 72 [2022-01-11 05:47:42,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:42,299 INFO L470 AbstractCegarLoop]: Abstraction has 10743 states and 17426 transitions. [2022-01-11 05:47:42,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:42,299 INFO L276 IsEmpty]: Start isEmpty. Operand 10743 states and 17426 transitions. [2022-01-11 05:47:42,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-11 05:47:42,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:42,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:47:42,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 05:47:42,304 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:42,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:42,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1454769780, now seen corresponding path program 1 times [2022-01-11 05:47:42,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:42,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768894765] [2022-01-11 05:47:42,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:42,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:42,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:42,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:42,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768894765] [2022-01-11 05:47:42,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768894765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:42,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:42,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-11 05:47:42,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262465876] [2022-01-11 05:47:42,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:42,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 05:47:42,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:42,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 05:47:42,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-11 05:47:42,414 INFO L87 Difference]: Start difference. First operand 10743 states and 17426 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:44,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:44,839 INFO L93 Difference]: Finished difference Result 20232 states and 32089 transitions. [2022-01-11 05:47:44,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-11 05:47:44,840 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-11 05:47:44,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:44,860 INFO L225 Difference]: With dead ends: 20232 [2022-01-11 05:47:44,861 INFO L226 Difference]: Without dead ends: 14823 [2022-01-11 05:47:44,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2022-01-11 05:47:44,870 INFO L933 BasicCegarLoop]: 780 mSDtfsCounter, 3076 mSDsluCounter, 4494 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3076 SdHoareTripleChecker+Valid, 5274 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:44,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3076 Valid, 5274 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:47:44,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14823 states. [2022-01-11 05:47:46,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14823 to 10663. [2022-01-11 05:47:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10663 states, 10661 states have (on average 1.6157958915673951) internal successors, (17226), 10662 states have internal predecessors, (17226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:46,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10663 states to 10663 states and 17226 transitions. [2022-01-11 05:47:46,376 INFO L78 Accepts]: Start accepts. Automaton has 10663 states and 17226 transitions. Word has length 72 [2022-01-11 05:47:46,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:46,376 INFO L470 AbstractCegarLoop]: Abstraction has 10663 states and 17226 transitions. [2022-01-11 05:47:46,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:46,376 INFO L276 IsEmpty]: Start isEmpty. Operand 10663 states and 17226 transitions. [2022-01-11 05:47:46,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-11 05:47:46,381 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:46,381 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] [2022-01-11 05:47:46,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 05:47:46,381 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:46,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:46,382 INFO L85 PathProgramCache]: Analyzing trace with hash 605213426, now seen corresponding path program 1 times [2022-01-11 05:47:46,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:46,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496967079] [2022-01-11 05:47:46,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:46,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:46,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:46,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:46,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496967079] [2022-01-11 05:47:46,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496967079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:46,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:46,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:47:46,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405028412] [2022-01-11 05:47:46,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:46,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:47:46,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:46,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:47:46,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:47:46,456 INFO L87 Difference]: Start difference. First operand 10663 states and 17226 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:50,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:47:50,599 INFO L93 Difference]: Finished difference Result 29070 states and 44574 transitions. [2022-01-11 05:47:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:47:50,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-01-11 05:47:50,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:47:50,626 INFO L225 Difference]: With dead ends: 29070 [2022-01-11 05:47:50,627 INFO L226 Difference]: Without dead ends: 22753 [2022-01-11 05:47:50,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:47:50,635 INFO L933 BasicCegarLoop]: 879 mSDtfsCounter, 706 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 2502 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:47:50,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [706 Valid, 2502 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:47:50,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22753 states. [2022-01-11 05:47:52,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22753 to 10751. [2022-01-11 05:47:52,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10751 states, 10749 states have (on average 1.6107544887896548) internal successors, (17314), 10750 states have internal predecessors, (17314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:52,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10751 states to 10751 states and 17314 transitions. [2022-01-11 05:47:52,172 INFO L78 Accepts]: Start accepts. Automaton has 10751 states and 17314 transitions. Word has length 75 [2022-01-11 05:47:52,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:47:52,173 INFO L470 AbstractCegarLoop]: Abstraction has 10751 states and 17314 transitions. [2022-01-11 05:47:52,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:47:52,173 INFO L276 IsEmpty]: Start isEmpty. Operand 10751 states and 17314 transitions. [2022-01-11 05:47:52,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-11 05:47:52,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:47:52,179 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] [2022-01-11 05:47:52,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 05:47:52,179 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:47:52,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:47:52,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1343110705, now seen corresponding path program 1 times [2022-01-11 05:47:52,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:47:52,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117001806] [2022-01-11 05:47:52,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:47:52,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:47:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:47:52,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:47:52,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:47:52,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117001806] [2022-01-11 05:47:52,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117001806] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:47:52,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:47:52,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:47:52,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274984769] [2022-01-11 05:47:52,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:47:52,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:47:52,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:47:52,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:47:52,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:47:52,255 INFO L87 Difference]: Start difference. First operand 10751 states and 17314 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:48:00,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:48:01,000 INFO L93 Difference]: Finished difference Result 51873 states and 79526 transitions. [2022-01-11 05:48:01,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:48:01,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-01-11 05:48:01,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:48:01,068 INFO L225 Difference]: With dead ends: 51873 [2022-01-11 05:48:01,068 INFO L226 Difference]: Without dead ends: 45508 [2022-01-11 05:48:01,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:48:01,086 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 2402 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2402 SdHoareTripleChecker+Valid, 3469 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:48:01,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2402 Valid, 3469 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:48:01,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45508 states. [2022-01-11 05:48:04,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45508 to 20679. [2022-01-11 05:48:04,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20679 states, 20677 states have (on average 1.6113556125163224) internal successors, (33318), 20678 states have internal predecessors, (33318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:48:04,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20679 states to 20679 states and 33318 transitions. [2022-01-11 05:48:04,400 INFO L78 Accepts]: Start accepts. Automaton has 20679 states and 33318 transitions. Word has length 75 [2022-01-11 05:48:04,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:48:04,400 INFO L470 AbstractCegarLoop]: Abstraction has 20679 states and 33318 transitions. [2022-01-11 05:48:04,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:48:04,400 INFO L276 IsEmpty]: Start isEmpty. Operand 20679 states and 33318 transitions. [2022-01-11 05:48:04,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-11 05:48:04,412 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:48:04,412 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] [2022-01-11 05:48:04,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 05:48:04,412 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:48:04,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:48:04,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1725602385, now seen corresponding path program 1 times [2022-01-11 05:48:04,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:48:04,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386839931] [2022-01-11 05:48:04,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:48:04,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:48:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:48:04,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:48:04,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:48:04,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386839931] [2022-01-11 05:48:04,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386839931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:48:04,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:48:04,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:48:04,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907183702] [2022-01-11 05:48:04,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:48:04,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:48:04,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:48:04,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:48:04,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:48:04,486 INFO L87 Difference]: Start difference. First operand 20679 states and 33318 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:48:23,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:48:23,039 INFO L93 Difference]: Finished difference Result 100293 states and 153374 transitions. [2022-01-11 05:48:23,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:48:23,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-01-11 05:48:23,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:48:23,221 INFO L225 Difference]: With dead ends: 100293 [2022-01-11 05:48:23,221 INFO L226 Difference]: Without dead ends: 88300 [2022-01-11 05:48:23,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:48:23,314 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 2593 mSDsluCounter, 2670 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2593 SdHoareTripleChecker+Valid, 3507 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:48:23,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2593 Valid, 3507 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:48:23,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88300 states.