/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:54:03,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:54:03,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:54:03,396 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:54:03,396 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:54:03,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:54:03,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:54:03,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:54:03,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:54:03,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:54:03,432 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:54:03,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:54:03,434 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:54:03,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:54:03,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:54:03,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:54:03,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:54:03,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:54:03,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:54:03,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:54:03,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:54:03,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:54:03,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:54:03,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:54:03,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:54:03,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:54:03,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:54:03,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:54:03,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:54:03,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:54:03,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:54:03,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:54:03,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:54:03,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:54:03,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:54:03,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:54:03,463 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:54:03,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:54:03,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:54:03,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:54:03,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:54:03,466 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:54:03,489 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:54:03,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:54:03,489 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:54:03,489 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:54:03,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:54:03,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:54:03,490 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:54:03,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:54:03,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:54:03,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:54:03,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:54:03,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:54:03,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:54:03,490 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:54:03,491 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:54:03,491 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:54:03,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:54:03,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:54:03,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:54:03,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:54:03,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:54:03,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:54:03,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:54:03,491 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:54:03,491 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:54:03,491 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:54:03,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:54:03,492 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:54:03,492 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:54:03,492 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:54:03,492 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:54:03,492 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:54:03,492 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:54:03,492 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:54:03,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:54:03,692 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:54:03,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:54:03,696 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:54:03,696 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:54:03,697 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product30.cil.c [2022-01-10 23:54:03,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6379ac34c/1c8f810d4d4044e7bb030d3bc1c93ae6/FLAGcf8481709 [2022-01-10 23:54:04,135 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:54:04,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product30.cil.c [2022-01-10 23:54:04,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6379ac34c/1c8f810d4d4044e7bb030d3bc1c93ae6/FLAGcf8481709 [2022-01-10 23:54:04,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6379ac34c/1c8f810d4d4044e7bb030d3bc1c93ae6 [2022-01-10 23:54:04,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:54:04,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:54:04,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:54:04,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:54:04,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:54:04,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:54:04" (1/1) ... [2022-01-10 23:54:04,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b84a84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:04, skipping insertion in model container [2022-01-10 23:54:04,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:54:04" (1/1) ... [2022-01-10 23:54:04,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:54:04,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:54:04,946 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product30.cil.c[47628,47641] [2022-01-10 23:54:05,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:54:05,040 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:54:05,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:54:05,094 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product30.cil.c[47628,47641] [2022-01-10 23:54:05,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:54:05,123 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:54:05,174 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product30.cil.c[47628,47641] [2022-01-10 23:54:05,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:54:05,215 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:54:05,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:05 WrapperNode [2022-01-10 23:54:05,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:54:05,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:54:05,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:54:05,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:54:05,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:05" (1/1) ... [2022-01-10 23:54:05,254 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:05" (1/1) ... [2022-01-10 23:54:05,329 INFO L137 Inliner]: procedures = 133, calls = 219, calls flagged for inlining = 130, calls inlined = 161, statements flattened = 2467 [2022-01-10 23:54:05,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:54:05,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:54:05,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:54:05,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:54:05,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:05" (1/1) ... [2022-01-10 23:54:05,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:05" (1/1) ... [2022-01-10 23:54:05,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:05" (1/1) ... [2022-01-10 23:54:05,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:05" (1/1) ... [2022-01-10 23:54:05,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:05" (1/1) ... [2022-01-10 23:54:05,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:05" (1/1) ... [2022-01-10 23:54:05,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:05" (1/1) ... [2022-01-10 23:54:05,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:54:05,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:54:05,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:54:05,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:54:05,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:05" (1/1) ... [2022-01-10 23:54:05,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:54:05,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:54:05,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 23:54:05,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 23:54:05,473 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:54:05,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:54:05,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:54:05,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:54:05,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:54:05,667 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:54:05,668 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:54:06,696 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:54:06,704 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:54:06,704 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:54:06,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:54:06 BoogieIcfgContainer [2022-01-10 23:54:06,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:54:06,707 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:54:06,707 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:54:06,708 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:54:06,710 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:54:06" (1/1) ... [2022-01-10 23:54:07,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:54:07 BasicIcfg [2022-01-10 23:54:07,040 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:54:07,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:54:07,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:54:07,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:54:07,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:54:04" (1/4) ... [2022-01-10 23:54:07,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e523c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:54:07, skipping insertion in model container [2022-01-10 23:54:07,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:54:05" (2/4) ... [2022-01-10 23:54:07,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e523c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:54:07, skipping insertion in model container [2022-01-10 23:54:07,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:54:06" (3/4) ... [2022-01-10 23:54:07,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e523c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:54:07, skipping insertion in model container [2022-01-10 23:54:07,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:54:07" (4/4) ... [2022-01-10 23:54:07,046 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product30.cil.cTransformedIcfg [2022-01-10 23:54:07,050 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:54:07,050 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 23:54:07,081 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:54:07,085 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 23:54:07,085 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 23:54:07,099 INFO L276 IsEmpty]: Start isEmpty. Operand has 572 states, 569 states have (on average 1.6994727592267136) internal successors, (967), 571 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:07,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:54:07,107 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:07,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:07,108 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:07,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:07,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1825762761, now seen corresponding path program 1 times [2022-01-10 23:54:07,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:07,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535523983] [2022-01-10 23:54:07,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:07,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:07,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:07,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:07,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535523983] [2022-01-10 23:54:07,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535523983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:07,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:07,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:54:07,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594748981] [2022-01-10 23:54:07,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:07,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:54:07,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:07,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:54:07,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:54:07,422 INFO L87 Difference]: Start difference. First operand has 572 states, 569 states have (on average 1.6994727592267136) internal successors, (967), 571 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:07,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:07,471 INFO L93 Difference]: Finished difference Result 883 states and 1474 transitions. [2022-01-10 23:54:07,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:54:07,473 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 23:54:07,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:07,483 INFO L225 Difference]: With dead ends: 883 [2022-01-10 23:54:07,483 INFO L226 Difference]: Without dead ends: 541 [2022-01-10 23:54:07,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:54:07,488 INFO L933 BasicCegarLoop]: 961 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, 961 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:07,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:54:07,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-01-10 23:54:07,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2022-01-10 23:54:07,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 539 states have (on average 1.7087198515769944) internal successors, (921), 540 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:07,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 921 transitions. [2022-01-10 23:54:07,549 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 921 transitions. Word has length 69 [2022-01-10 23:54:07,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:07,550 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 921 transitions. [2022-01-10 23:54:07,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:07,550 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 921 transitions. [2022-01-10 23:54:07,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:54:07,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:07,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:07,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:54:07,553 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:07,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:07,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2114424523, now seen corresponding path program 1 times [2022-01-10 23:54:07,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:07,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083735101] [2022-01-10 23:54:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:07,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:07,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:07,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:07,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083735101] [2022-01-10 23:54:07,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083735101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:07,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:07,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:54:07,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132814860] [2022-01-10 23:54:07,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:07,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:54:07,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:07,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:54:07,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:54:07,705 INFO L87 Difference]: Start difference. First operand 541 states and 921 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:07,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:07,789 INFO L93 Difference]: Finished difference Result 1063 states and 1814 transitions. [2022-01-10 23:54:07,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:54:07,789 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 23:54:07,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:07,792 INFO L225 Difference]: With dead ends: 1063 [2022-01-10 23:54:07,792 INFO L226 Difference]: Without dead ends: 541 [2022-01-10 23:54:07,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:54:07,794 INFO L933 BasicCegarLoop]: 902 mSDtfsCounter, 896 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:07,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 915 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:07,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2022-01-10 23:54:07,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2022-01-10 23:54:07,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 539 states have (on average 1.705009276437848) internal successors, (919), 540 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:07,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 919 transitions. [2022-01-10 23:54:07,838 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 919 transitions. Word has length 70 [2022-01-10 23:54:07,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:07,838 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 919 transitions. [2022-01-10 23:54:07,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:07,838 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 919 transitions. [2022-01-10 23:54:07,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:54:07,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:07,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:07,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:54:07,841 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:07,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:07,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1636262133, now seen corresponding path program 1 times [2022-01-10 23:54:07,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:07,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473267628] [2022-01-10 23:54:07,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:07,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:08,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:08,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:08,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473267628] [2022-01-10 23:54:08,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473267628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:08,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:08,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:54:08,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502125024] [2022-01-10 23:54:08,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:08,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:08,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:08,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:08,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:08,011 INFO L87 Difference]: Start difference. First operand 541 states and 919 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:08,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:08,213 INFO L93 Difference]: Finished difference Result 2573 states and 4391 transitions. [2022-01-10 23:54:08,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:54:08,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 23:54:08,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:08,224 INFO L225 Difference]: With dead ends: 2573 [2022-01-10 23:54:08,224 INFO L226 Difference]: Without dead ends: 2056 [2022-01-10 23:54:08,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:54:08,234 INFO L933 BasicCegarLoop]: 1761 mSDtfsCounter, 4378 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4378 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:08,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4378 Valid, 4390 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:08,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2022-01-10 23:54:08,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 541. [2022-01-10 23:54:08,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 539 states have (on average 1.7031539888682745) internal successors, (918), 540 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:08,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 918 transitions. [2022-01-10 23:54:08,277 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 918 transitions. Word has length 72 [2022-01-10 23:54:08,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:08,277 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 918 transitions. [2022-01-10 23:54:08,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:08,278 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 918 transitions. [2022-01-10 23:54:08,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 23:54:08,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:08,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:08,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:54:08,281 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:08,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:08,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1407576081, now seen corresponding path program 1 times [2022-01-10 23:54:08,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:08,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869932563] [2022-01-10 23:54:08,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:08,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:08,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:08,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:08,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869932563] [2022-01-10 23:54:08,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869932563] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:08,391 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:08,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:54:08,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128096184] [2022-01-10 23:54:08,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:08,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:54:08,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:08,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:54:08,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:54:08,393 INFO L87 Difference]: Start difference. First operand 541 states and 918 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:08,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:08,432 INFO L93 Difference]: Finished difference Result 1067 states and 1814 transitions. [2022-01-10 23:54:08,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:54:08,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 23:54:08,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:08,434 INFO L225 Difference]: With dead ends: 1067 [2022-01-10 23:54:08,434 INFO L226 Difference]: Without dead ends: 555 [2022-01-10 23:54:08,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:54:08,436 INFO L933 BasicCegarLoop]: 932 mSDtfsCounter, 897 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:08,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 954 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:54:08,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-01-10 23:54:08,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 541. [2022-01-10 23:54:08,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 539 states have (on average 1.7012987012987013) internal successors, (917), 540 states have internal predecessors, (917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:08,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 917 transitions. [2022-01-10 23:54:08,457 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 917 transitions. Word has length 73 [2022-01-10 23:54:08,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:08,457 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 917 transitions. [2022-01-10 23:54:08,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:08,458 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 917 transitions. [2022-01-10 23:54:08,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 23:54:08,459 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:08,459 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:08,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:54:08,459 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:08,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:08,459 INFO L85 PathProgramCache]: Analyzing trace with hash 989610442, now seen corresponding path program 1 times [2022-01-10 23:54:08,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:08,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165738097] [2022-01-10 23:54:08,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:08,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:08,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:08,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:08,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165738097] [2022-01-10 23:54:08,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165738097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:08,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:08,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:54:08,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387824133] [2022-01-10 23:54:08,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:08,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:08,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:08,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:08,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:08,547 INFO L87 Difference]: Start difference. First operand 541 states and 917 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:08,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:08,669 INFO L93 Difference]: Finished difference Result 1557 states and 2651 transitions. [2022-01-10 23:54:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:54:08,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 23:54:08,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:08,673 INFO L225 Difference]: With dead ends: 1557 [2022-01-10 23:54:08,673 INFO L226 Difference]: Without dead ends: 1050 [2022-01-10 23:54:08,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:54:08,675 INFO L933 BasicCegarLoop]: 926 mSDtfsCounter, 4301 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4301 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:08,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4301 Valid, 1866 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:08,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2022-01-10 23:54:08,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 541. [2022-01-10 23:54:08,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 539 states have (on average 1.6975881261595547) internal successors, (915), 540 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:08,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 915 transitions. [2022-01-10 23:54:08,699 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 915 transitions. Word has length 74 [2022-01-10 23:54:08,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:08,700 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 915 transitions. [2022-01-10 23:54:08,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:08,700 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 915 transitions. [2022-01-10 23:54:08,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 23:54:08,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:08,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:08,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:54:08,701 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:08,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:08,702 INFO L85 PathProgramCache]: Analyzing trace with hash 422139213, now seen corresponding path program 1 times [2022-01-10 23:54:08,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:08,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925305179] [2022-01-10 23:54:08,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:08,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:08,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:08,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:08,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925305179] [2022-01-10 23:54:08,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925305179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:08,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:08,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:54:08,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436758550] [2022-01-10 23:54:08,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:08,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:54:08,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:08,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:54:08,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:54:08,791 INFO L87 Difference]: Start difference. First operand 541 states and 915 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:09,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:09,222 INFO L93 Difference]: Finished difference Result 3569 states and 5985 transitions. [2022-01-10 23:54:09,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:54:09,224 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 23:54:09,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:09,235 INFO L225 Difference]: With dead ends: 3569 [2022-01-10 23:54:09,235 INFO L226 Difference]: Without dead ends: 3306 [2022-01-10 23:54:09,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:54:09,239 INFO L933 BasicCegarLoop]: 1495 mSDtfsCounter, 6231 mSDsluCounter, 5613 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6231 SdHoareTripleChecker+Valid, 7108 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:09,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6231 Valid, 7108 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:09,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3306 states. [2022-01-10 23:54:09,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3306 to 948. [2022-01-10 23:54:09,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.6987315010570825) internal successors, (1607), 947 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:09,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1607 transitions. [2022-01-10 23:54:09,307 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1607 transitions. Word has length 76 [2022-01-10 23:54:09,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:09,307 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 1607 transitions. [2022-01-10 23:54:09,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:09,307 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1607 transitions. [2022-01-10 23:54:09,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 23:54:09,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:09,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:09,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:54:09,309 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:09,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:09,310 INFO L85 PathProgramCache]: Analyzing trace with hash 106193602, now seen corresponding path program 1 times [2022-01-10 23:54:09,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:09,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876103604] [2022-01-10 23:54:09,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:09,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:09,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:09,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876103604] [2022-01-10 23:54:09,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876103604] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:09,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:09,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:54:09,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165280544] [2022-01-10 23:54:09,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:09,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:09,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:09,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:09,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:09,389 INFO L87 Difference]: Start difference. First operand 948 states and 1607 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:09,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:09,530 INFO L93 Difference]: Finished difference Result 1693 states and 2825 transitions. [2022-01-10 23:54:09,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:54:09,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 23:54:09,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:09,535 INFO L225 Difference]: With dead ends: 1693 [2022-01-10 23:54:09,535 INFO L226 Difference]: Without dead ends: 1273 [2022-01-10 23:54:09,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:54:09,538 INFO L933 BasicCegarLoop]: 901 mSDtfsCounter, 2497 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2497 SdHoareTripleChecker+Valid, 2157 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 [2022-01-10 23:54:09,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2497 Valid, 2157 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:54:09,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2022-01-10 23:54:09,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 948. [2022-01-10 23:54:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.6945031712473573) internal successors, (1603), 947 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1603 transitions. [2022-01-10 23:54:09,598 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1603 transitions. Word has length 77 [2022-01-10 23:54:09,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:09,598 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 1603 transitions. [2022-01-10 23:54:09,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:09,598 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1603 transitions. [2022-01-10 23:54:09,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 23:54:09,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:09,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:09,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:54:09,600 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:09,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:09,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1779305321, now seen corresponding path program 1 times [2022-01-10 23:54:09,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:09,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303127561] [2022-01-10 23:54:09,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:09,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:09,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:09,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303127561] [2022-01-10 23:54:09,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303127561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:09,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:09,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:54:09,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69938034] [2022-01-10 23:54:09,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:09,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:09,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:09,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:09,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:09,670 INFO L87 Difference]: Start difference. First operand 948 states and 1603 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:09,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:09,850 INFO L93 Difference]: Finished difference Result 2721 states and 4638 transitions. [2022-01-10 23:54:09,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:54:09,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 23:54:09,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:09,856 INFO L225 Difference]: With dead ends: 2721 [2022-01-10 23:54:09,856 INFO L226 Difference]: Without dead ends: 1810 [2022-01-10 23:54:09,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:54:09,858 INFO L933 BasicCegarLoop]: 1729 mSDtfsCounter, 2676 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2676 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:09,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2676 Valid, 2595 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:54:09,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2022-01-10 23:54:09,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 948. [2022-01-10 23:54:09,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.6923890063424947) internal successors, (1601), 947 states have internal predecessors, (1601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:09,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1601 transitions. [2022-01-10 23:54:09,935 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1601 transitions. Word has length 77 [2022-01-10 23:54:09,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:09,935 INFO L470 AbstractCegarLoop]: Abstraction has 948 states and 1601 transitions. [2022-01-10 23:54:09,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:09,935 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1601 transitions. [2022-01-10 23:54:09,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 23:54:09,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:09,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:09,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:54:09,937 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:09,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:09,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1202162177, now seen corresponding path program 1 times [2022-01-10 23:54:09,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:09,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124519242] [2022-01-10 23:54:09,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:09,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:10,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:10,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:10,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124519242] [2022-01-10 23:54:10,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124519242] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:10,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:10,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:54:10,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287025378] [2022-01-10 23:54:10,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:10,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:54:10,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:10,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:54:10,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:54:10,071 INFO L87 Difference]: Start difference. First operand 948 states and 1601 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:10,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:10,817 INFO L93 Difference]: Finished difference Result 4232 states and 6882 transitions. [2022-01-10 23:54:10,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:54:10,817 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-10 23:54:10,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:10,829 INFO L225 Difference]: With dead ends: 4232 [2022-01-10 23:54:10,829 INFO L226 Difference]: Without dead ends: 3854 [2022-01-10 23:54:10,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:54:10,834 INFO L933 BasicCegarLoop]: 1167 mSDtfsCounter, 9067 mSDsluCounter, 6635 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9067 SdHoareTripleChecker+Valid, 7802 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:10,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9067 Valid, 7802 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:54:10,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2022-01-10 23:54:11,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 1731. [2022-01-10 23:54:11,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1731 states, 1729 states have (on average 1.7044534412955465) internal successors, (2947), 1730 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:11,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2947 transitions. [2022-01-10 23:54:11,032 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2947 transitions. Word has length 78 [2022-01-10 23:54:11,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:11,033 INFO L470 AbstractCegarLoop]: Abstraction has 1731 states and 2947 transitions. [2022-01-10 23:54:11,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:11,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2947 transitions. [2022-01-10 23:54:11,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 23:54:11,035 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:11,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:11,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:54:11,035 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:11,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:11,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1739217083, now seen corresponding path program 1 times [2022-01-10 23:54:11,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:11,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378006573] [2022-01-10 23:54:11,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:11,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:11,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:11,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378006573] [2022-01-10 23:54:11,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378006573] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:11,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:11,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:54:11,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255662597] [2022-01-10 23:54:11,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:11,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:11,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:11,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:11,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:11,139 INFO L87 Difference]: Start difference. First operand 1731 states and 2947 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:11,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:11,681 INFO L93 Difference]: Finished difference Result 4687 states and 7753 transitions. [2022-01-10 23:54:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:54:11,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 23:54:11,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:11,693 INFO L225 Difference]: With dead ends: 4687 [2022-01-10 23:54:11,693 INFO L226 Difference]: Without dead ends: 4040 [2022-01-10 23:54:11,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:54:11,695 INFO L933 BasicCegarLoop]: 1139 mSDtfsCounter, 2061 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2061 SdHoareTripleChecker+Valid, 3889 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:11,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2061 Valid, 3889 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:54:11,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4040 states. [2022-01-10 23:54:11,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4040 to 2936. [2022-01-10 23:54:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2936 states, 2934 states have (on average 1.6942740286298568) internal successors, (4971), 2935 states have internal predecessors, (4971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:11,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2936 states to 2936 states and 4971 transitions. [2022-01-10 23:54:11,916 INFO L78 Accepts]: Start accepts. Automaton has 2936 states and 4971 transitions. Word has length 79 [2022-01-10 23:54:11,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:11,916 INFO L470 AbstractCegarLoop]: Abstraction has 2936 states and 4971 transitions. [2022-01-10 23:54:11,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:11,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2936 states and 4971 transitions. [2022-01-10 23:54:11,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 23:54:11,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:11,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:11,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:54:11,920 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:11,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:11,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1750533210, now seen corresponding path program 1 times [2022-01-10 23:54:11,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:11,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275991365] [2022-01-10 23:54:11,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:11,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:11,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:12,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:12,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:12,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275991365] [2022-01-10 23:54:12,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275991365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:12,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:12,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:54:12,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993877182] [2022-01-10 23:54:12,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:12,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:54:12,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:12,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:54:12,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:54:12,006 INFO L87 Difference]: Start difference. First operand 2936 states and 4971 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:12,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:12,817 INFO L93 Difference]: Finished difference Result 8932 states and 14973 transitions. [2022-01-10 23:54:12,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:54:12,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 23:54:12,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:12,868 INFO L225 Difference]: With dead ends: 8932 [2022-01-10 23:54:12,868 INFO L226 Difference]: Without dead ends: 8318 [2022-01-10 23:54:12,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:54:12,874 INFO L933 BasicCegarLoop]: 1701 mSDtfsCounter, 4848 mSDsluCounter, 5710 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4848 SdHoareTripleChecker+Valid, 7411 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:12,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4848 Valid, 7411 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:12,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8318 states. [2022-01-10 23:54:13,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8318 to 3064. [2022-01-10 23:54:13,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 3062 states have (on average 1.6910516002612672) internal successors, (5178), 3063 states have internal predecessors, (5178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 5178 transitions. [2022-01-10 23:54:13,111 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 5178 transitions. Word has length 79 [2022-01-10 23:54:13,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:13,112 INFO L470 AbstractCegarLoop]: Abstraction has 3064 states and 5178 transitions. [2022-01-10 23:54:13,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:13,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 5178 transitions. [2022-01-10 23:54:13,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 23:54:13,115 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:13,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:13,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:54:13,116 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:13,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:13,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1037053238, now seen corresponding path program 1 times [2022-01-10 23:54:13,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:13,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30237293] [2022-01-10 23:54:13,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:13,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:13,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:13,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:13,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30237293] [2022-01-10 23:54:13,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30237293] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:13,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:13,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:54:13,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088053783] [2022-01-10 23:54:13,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:13,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:13,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:13,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:13,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:13,208 INFO L87 Difference]: Start difference. First operand 3064 states and 5178 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:14,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:14,155 INFO L93 Difference]: Finished difference Result 9880 states and 16134 transitions. [2022-01-10 23:54:14,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:54:14,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 23:54:14,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:14,170 INFO L225 Difference]: With dead ends: 9880 [2022-01-10 23:54:14,170 INFO L226 Difference]: Without dead ends: 8854 [2022-01-10 23:54:14,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:54:14,174 INFO L933 BasicCegarLoop]: 916 mSDtfsCounter, 2926 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2926 SdHoareTripleChecker+Valid, 4080 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:14,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2926 Valid, 4080 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:14,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8854 states. [2022-01-10 23:54:14,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8854 to 4350. [2022-01-10 23:54:14,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4350 states, 4348 states have (on average 1.6628334866605337) internal successors, (7230), 4349 states have internal predecessors, (7230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:14,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4350 states to 4350 states and 7230 transitions. [2022-01-10 23:54:14,642 INFO L78 Accepts]: Start accepts. Automaton has 4350 states and 7230 transitions. Word has length 79 [2022-01-10 23:54:14,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:14,642 INFO L470 AbstractCegarLoop]: Abstraction has 4350 states and 7230 transitions. [2022-01-10 23:54:14,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:14,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4350 states and 7230 transitions. [2022-01-10 23:54:14,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 23:54:14,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:14,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:14,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:54:14,649 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:14,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:14,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1305601064, now seen corresponding path program 1 times [2022-01-10 23:54:14,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:14,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851379005] [2022-01-10 23:54:14,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:14,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:14,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:14,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851379005] [2022-01-10 23:54:14,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851379005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:14,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:14,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:54:14,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279302056] [2022-01-10 23:54:14,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:14,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:14,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:14,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:14,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:14,780 INFO L87 Difference]: Start difference. First operand 4350 states and 7230 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:15,623 INFO L93 Difference]: Finished difference Result 9260 states and 14994 transitions. [2022-01-10 23:54:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:54:15,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 23:54:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:15,636 INFO L225 Difference]: With dead ends: 9260 [2022-01-10 23:54:15,637 INFO L226 Difference]: Without dead ends: 7804 [2022-01-10 23:54:15,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:54:15,640 INFO L933 BasicCegarLoop]: 1163 mSDtfsCounter, 1345 mSDsluCounter, 3207 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 4370 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:15,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1345 Valid, 4370 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:54:15,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7804 states. [2022-01-10 23:54:16,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7804 to 4386. [2022-01-10 23:54:16,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4384 states have (on average 1.657390510948905) internal successors, (7266), 4385 states have internal predecessors, (7266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:16,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 7266 transitions. [2022-01-10 23:54:16,114 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 7266 transitions. Word has length 80 [2022-01-10 23:54:16,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:16,115 INFO L470 AbstractCegarLoop]: Abstraction has 4386 states and 7266 transitions. [2022-01-10 23:54:16,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:16,115 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 7266 transitions. [2022-01-10 23:54:16,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 23:54:16,119 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:16,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:16,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:54:16,119 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:16,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:16,120 INFO L85 PathProgramCache]: Analyzing trace with hash 431384776, now seen corresponding path program 1 times [2022-01-10 23:54:16,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:16,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866518606] [2022-01-10 23:54:16,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:16,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:16,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:16,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:16,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866518606] [2022-01-10 23:54:16,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866518606] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:16,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:16,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:54:16,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134864211] [2022-01-10 23:54:16,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:16,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:54:16,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:16,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:54:16,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:54:16,236 INFO L87 Difference]: Start difference. First operand 4386 states and 7266 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:16,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:16,936 INFO L93 Difference]: Finished difference Result 6898 states and 11257 transitions. [2022-01-10 23:54:16,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 23:54:16,938 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 23:54:16,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:16,944 INFO L225 Difference]: With dead ends: 6898 [2022-01-10 23:54:16,944 INFO L226 Difference]: Without dead ends: 4542 [2022-01-10 23:54:16,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:54:16,947 INFO L933 BasicCegarLoop]: 888 mSDtfsCounter, 2696 mSDsluCounter, 4829 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2696 SdHoareTripleChecker+Valid, 5717 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:16,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2696 Valid, 5717 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:16,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4542 states. [2022-01-10 23:54:17,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4542 to 4354. [2022-01-10 23:54:17,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4354 states, 4352 states have (on average 1.6511948529411764) internal successors, (7186), 4353 states have internal predecessors, (7186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:17,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 7186 transitions. [2022-01-10 23:54:17,342 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 7186 transitions. Word has length 80 [2022-01-10 23:54:17,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:17,342 INFO L470 AbstractCegarLoop]: Abstraction has 4354 states and 7186 transitions. [2022-01-10 23:54:17,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:17,343 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 7186 transitions. [2022-01-10 23:54:17,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 23:54:17,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:17,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:17,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:54:17,347 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:17,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:17,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1306108566, now seen corresponding path program 1 times [2022-01-10 23:54:17,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:17,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932391392] [2022-01-10 23:54:17,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:17,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:17,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:17,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:17,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932391392] [2022-01-10 23:54:17,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932391392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:17,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:17,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:54:17,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778574553] [2022-01-10 23:54:17,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:17,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:54:17,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:17,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:54:17,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:54:17,415 INFO L87 Difference]: Start difference. First operand 4354 states and 7186 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:18,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:18,754 INFO L93 Difference]: Finished difference Result 12238 states and 19394 transitions. [2022-01-10 23:54:18,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:54:18,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 23:54:18,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:18,770 INFO L225 Difference]: With dead ends: 12238 [2022-01-10 23:54:18,771 INFO L226 Difference]: Without dead ends: 9554 [2022-01-10 23:54:18,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:18,776 INFO L933 BasicCegarLoop]: 1046 mSDtfsCounter, 925 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:18,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [925 Valid, 2977 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:18,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9554 states. [2022-01-10 23:54:19,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9554 to 4386. [2022-01-10 23:54:19,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4386 states, 4384 states have (on average 1.646441605839416) internal successors, (7218), 4385 states have internal predecessors, (7218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:19,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 7218 transitions. [2022-01-10 23:54:19,413 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 7218 transitions. Word has length 83 [2022-01-10 23:54:19,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:19,414 INFO L470 AbstractCegarLoop]: Abstraction has 4386 states and 7218 transitions. [2022-01-10 23:54:19,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:19,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 7218 transitions. [2022-01-10 23:54:19,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 23:54:19,418 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:19,418 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:19,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:54:19,419 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:19,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:19,419 INFO L85 PathProgramCache]: Analyzing trace with hash -542762910, now seen corresponding path program 1 times [2022-01-10 23:54:19,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:19,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318419172] [2022-01-10 23:54:19,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:19,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:19,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:19,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:19,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318419172] [2022-01-10 23:54:19,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318419172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:19,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:19,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:54:19,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328705224] [2022-01-10 23:54:19,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:19,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:54:19,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:19,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:54:19,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:54:19,518 INFO L87 Difference]: Start difference. First operand 4386 states and 7218 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:21,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:21,166 INFO L93 Difference]: Finished difference Result 12070 states and 19217 transitions. [2022-01-10 23:54:21,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 23:54:21,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 23:54:21,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:21,177 INFO L225 Difference]: With dead ends: 12070 [2022-01-10 23:54:21,177 INFO L226 Difference]: Without dead ends: 10026 [2022-01-10 23:54:21,180 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 [2022-01-10 23:54:21,180 INFO L933 BasicCegarLoop]: 1254 mSDtfsCounter, 4928 mSDsluCounter, 4773 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4928 SdHoareTripleChecker+Valid, 6027 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 [2022-01-10 23:54:21,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4928 Valid, 6027 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:54:21,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10026 states. [2022-01-10 23:54:21,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10026 to 5270. [2022-01-10 23:54:21,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 5268 states have (on average 1.6366742596810935) internal successors, (8622), 5269 states have internal predecessors, (8622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:21,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 8622 transitions. [2022-01-10 23:54:21,781 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 8622 transitions. Word has length 83 [2022-01-10 23:54:21,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:21,781 INFO L470 AbstractCegarLoop]: Abstraction has 5270 states and 8622 transitions. [2022-01-10 23:54:21,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:21,781 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 8622 transitions. [2022-01-10 23:54:21,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 23:54:21,785 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:21,785 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:21,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:54:21,785 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:21,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:21,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1907543472, now seen corresponding path program 1 times [2022-01-10 23:54:21,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:21,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791631505] [2022-01-10 23:54:21,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:21,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:21,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:21,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:21,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791631505] [2022-01-10 23:54:21,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791631505] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:21,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:21,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:54:21,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929155375] [2022-01-10 23:54:21,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:21,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:54:21,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:21,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:54:21,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:54:21,846 INFO L87 Difference]: Start difference. First operand 5270 states and 8622 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:22,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:22,759 INFO L93 Difference]: Finished difference Result 8260 states and 13287 transitions. [2022-01-10 23:54:22,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:54:22,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 23:54:22,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:22,768 INFO L225 Difference]: With dead ends: 8260 [2022-01-10 23:54:22,768 INFO L226 Difference]: Without dead ends: 6560 [2022-01-10 23:54:22,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:22,770 INFO L933 BasicCegarLoop]: 903 mSDtfsCounter, 1131 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:22,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 2025 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:54:22,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6560 states. [2022-01-10 23:54:23,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6560 to 5270. [2022-01-10 23:54:23,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5270 states, 5268 states have (on average 1.6359149582384207) internal successors, (8618), 5269 states have internal predecessors, (8618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:23,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5270 states to 5270 states and 8618 transitions. [2022-01-10 23:54:23,411 INFO L78 Accepts]: Start accepts. Automaton has 5270 states and 8618 transitions. Word has length 83 [2022-01-10 23:54:23,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:23,411 INFO L470 AbstractCegarLoop]: Abstraction has 5270 states and 8618 transitions. [2022-01-10 23:54:23,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:23,411 INFO L276 IsEmpty]: Start isEmpty. Operand 5270 states and 8618 transitions. [2022-01-10 23:54:23,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 23:54:23,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:23,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:23,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 23:54:23,415 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:23,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:23,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1362729903, now seen corresponding path program 1 times [2022-01-10 23:54:23,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:23,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354389305] [2022-01-10 23:54:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:23,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:23,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:23,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:23,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354389305] [2022-01-10 23:54:23,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354389305] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:23,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:23,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:54:23,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340507125] [2022-01-10 23:54:23,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:23,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:23,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:23,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:23,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:23,485 INFO L87 Difference]: Start difference. First operand 5270 states and 8618 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:27,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:27,469 INFO L93 Difference]: Finished difference Result 27046 states and 42654 transitions. [2022-01-10 23:54:27,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:54:27,470 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 23:54:27,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:27,500 INFO L225 Difference]: With dead ends: 27046 [2022-01-10 23:54:27,501 INFO L226 Difference]: Without dead ends: 23524 [2022-01-10 23:54:27,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:54:27,507 INFO L933 BasicCegarLoop]: 950 mSDtfsCounter, 3320 mSDsluCounter, 3209 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3320 SdHoareTripleChecker+Valid, 4159 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:27,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3320 Valid, 4159 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:54:27,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23524 states. [2022-01-10 23:54:28,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23524 to 9796. [2022-01-10 23:54:28,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9796 states, 9794 states have (on average 1.637941596896059) internal successors, (16042), 9795 states have internal predecessors, (16042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:28,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9796 states to 9796 states and 16042 transitions. [2022-01-10 23:54:28,766 INFO L78 Accepts]: Start accepts. Automaton has 9796 states and 16042 transitions. Word has length 83 [2022-01-10 23:54:28,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:28,766 INFO L470 AbstractCegarLoop]: Abstraction has 9796 states and 16042 transitions. [2022-01-10 23:54:28,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:28,766 INFO L276 IsEmpty]: Start isEmpty. Operand 9796 states and 16042 transitions. [2022-01-10 23:54:28,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 23:54:28,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:28,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:28,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 23:54:28,774 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:28,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:28,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2126075559, now seen corresponding path program 1 times [2022-01-10 23:54:28,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:28,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032630369] [2022-01-10 23:54:28,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:28,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:28,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:28,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:28,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032630369] [2022-01-10 23:54:28,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032630369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:28,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:28,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:54:28,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533548924] [2022-01-10 23:54:28,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:28,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:28,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:28,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:28,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:28,851 INFO L87 Difference]: Start difference. First operand 9796 states and 16042 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:31,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:31,617 INFO L93 Difference]: Finished difference Result 23632 states and 37710 transitions. [2022-01-10 23:54:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:54:31,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 23:54:31,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:31,641 INFO L225 Difference]: With dead ends: 23632 [2022-01-10 23:54:31,641 INFO L226 Difference]: Without dead ends: 18020 [2022-01-10 23:54:31,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:54:31,648 INFO L933 BasicCegarLoop]: 1645 mSDtfsCounter, 2282 mSDsluCounter, 3420 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2282 SdHoareTripleChecker+Valid, 5065 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 [2022-01-10 23:54:31,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2282 Valid, 5065 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:31,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18020 states. [2022-01-10 23:54:33,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18020 to 10708. [2022-01-10 23:54:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10708 states, 10706 states have (on average 1.614608630674388) internal successors, (17286), 10707 states have internal predecessors, (17286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:33,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10708 states to 10708 states and 17286 transitions. [2022-01-10 23:54:33,142 INFO L78 Accepts]: Start accepts. Automaton has 10708 states and 17286 transitions. Word has length 83 [2022-01-10 23:54:33,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:33,142 INFO L470 AbstractCegarLoop]: Abstraction has 10708 states and 17286 transitions. [2022-01-10 23:54:33,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:33,142 INFO L276 IsEmpty]: Start isEmpty. Operand 10708 states and 17286 transitions. [2022-01-10 23:54:33,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 23:54:33,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:33,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:33,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 23:54:33,149 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:33,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:33,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1692674734, now seen corresponding path program 1 times [2022-01-10 23:54:33,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:33,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495129338] [2022-01-10 23:54:33,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:33,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:33,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:33,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:33,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495129338] [2022-01-10 23:54:33,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495129338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:33,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:33,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:54:33,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538398553] [2022-01-10 23:54:33,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:33,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:54:33,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:33,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:54:33,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:54:33,258 INFO L87 Difference]: Start difference. First operand 10708 states and 17286 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:42,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:42,631 INFO L93 Difference]: Finished difference Result 66098 states and 105952 transitions. [2022-01-10 23:54:42,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:54:42,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 23:54:42,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:42,719 INFO L225 Difference]: With dead ends: 66098 [2022-01-10 23:54:42,720 INFO L226 Difference]: Without dead ends: 60534 [2022-01-10 23:54:42,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:54:42,738 INFO L933 BasicCegarLoop]: 1357 mSDtfsCounter, 4891 mSDsluCounter, 4110 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4891 SdHoareTripleChecker+Valid, 5467 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 [2022-01-10 23:54:42,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4891 Valid, 5467 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:42,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60534 states. [2022-01-10 23:54:46,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60534 to 21198. [2022-01-10 23:54:46,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21198 states, 21196 states have (on average 1.6142668428005285) internal successors, (34216), 21197 states have internal predecessors, (34216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:46,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21198 states to 21198 states and 34216 transitions. [2022-01-10 23:54:46,146 INFO L78 Accepts]: Start accepts. Automaton has 21198 states and 34216 transitions. Word has length 84 [2022-01-10 23:54:46,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:46,147 INFO L470 AbstractCegarLoop]: Abstraction has 21198 states and 34216 transitions. [2022-01-10 23:54:46,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:46,147 INFO L276 IsEmpty]: Start isEmpty. Operand 21198 states and 34216 transitions. [2022-01-10 23:54:46,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 23:54:46,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:46,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:46,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 23:54:46,163 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:46,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:46,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1673400475, now seen corresponding path program 1 times [2022-01-10 23:54:46,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:46,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009661112] [2022-01-10 23:54:46,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:46,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:46,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:46,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:46,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:46,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009661112] [2022-01-10 23:54:46,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009661112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:46,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:46,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:54:46,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282115847] [2022-01-10 23:54:46,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:46,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:54:46,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:46,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:54:46,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:54:46,256 INFO L87 Difference]: Start difference. First operand 21198 states and 34216 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:49,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:49,951 INFO L93 Difference]: Finished difference Result 37524 states and 59819 transitions. [2022-01-10 23:54:49,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:54:49,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 23:54:49,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:49,981 INFO L225 Difference]: With dead ends: 37524 [2022-01-10 23:54:49,981 INFO L226 Difference]: Without dead ends: 22604 [2022-01-10 23:54:49,992 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 [2022-01-10 23:54:49,993 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 2154 mSDsluCounter, 3909 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 4928 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 [2022-01-10 23:54:49,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2154 Valid, 4928 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:54:50,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22604 states. [2022-01-10 23:54:53,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22604 to 20902. [2022-01-10 23:54:53,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20902 states, 20900 states have (on average 1.610334928229665) internal successors, (33656), 20901 states have internal predecessors, (33656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:53,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20902 states to 20902 states and 33656 transitions. [2022-01-10 23:54:53,309 INFO L78 Accepts]: Start accepts. Automaton has 20902 states and 33656 transitions. Word has length 84 [2022-01-10 23:54:53,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:53,310 INFO L470 AbstractCegarLoop]: Abstraction has 20902 states and 33656 transitions. [2022-01-10 23:54:53,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:53,310 INFO L276 IsEmpty]: Start isEmpty. Operand 20902 states and 33656 transitions. [2022-01-10 23:54:53,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 23:54:53,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:53,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:53,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 23:54:53,323 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:53,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:53,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1240654007, now seen corresponding path program 1 times [2022-01-10 23:54:53,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:53,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077536739] [2022-01-10 23:54:53,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:53,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:53,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:53,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077536739] [2022-01-10 23:54:53,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077536739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:53,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:53,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:54:53,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300942764] [2022-01-10 23:54:53,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:53,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:54:53,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:53,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:54:53,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:54:53,418 INFO L87 Difference]: Start difference. First operand 20902 states and 33656 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:58,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:58,316 INFO L93 Difference]: Finished difference Result 35864 states and 56927 transitions. [2022-01-10 23:54:58,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 23:54:58,318 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 23:54:58,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:58,354 INFO L225 Difference]: With dead ends: 35864 [2022-01-10 23:54:58,354 INFO L226 Difference]: Without dead ends: 27792 [2022-01-10 23:54:58,365 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 [2022-01-10 23:54:58,366 INFO L933 BasicCegarLoop]: 1008 mSDtfsCounter, 4610 mSDsluCounter, 3380 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4610 SdHoareTripleChecker+Valid, 4388 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 [2022-01-10 23:54:58,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4610 Valid, 4388 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:58,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27792 states. [2022-01-10 23:55:01,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27792 to 20862. [2022-01-10 23:55:01,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20862 states, 20860 states have (on average 1.609587727708533) internal successors, (33576), 20861 states have internal predecessors, (33576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:01,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20862 states to 20862 states and 33576 transitions. [2022-01-10 23:55:01,606 INFO L78 Accepts]: Start accepts. Automaton has 20862 states and 33576 transitions. Word has length 85 [2022-01-10 23:55:01,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:55:01,606 INFO L470 AbstractCegarLoop]: Abstraction has 20862 states and 33576 transitions. [2022-01-10 23:55:01,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:01,606 INFO L276 IsEmpty]: Start isEmpty. Operand 20862 states and 33576 transitions. [2022-01-10 23:55:01,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 23:55:01,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:55:01,620 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:55:01,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 23:55:01,620 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:55:01,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:55:01,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1307660760, now seen corresponding path program 1 times [2022-01-10 23:55:01,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:55:01,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165334045] [2022-01-10 23:55:01,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:55:01,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:55:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:55:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:55:01,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:55:01,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165334045] [2022-01-10 23:55:01,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165334045] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:55:01,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:55:01,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 23:55:01,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103730566] [2022-01-10 23:55:01,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:55:01,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-10 23:55:01,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:55:01,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-10 23:55:01,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:55:01,812 INFO L87 Difference]: Start difference. First operand 20862 states and 33576 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)