/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/combinations/Problem05_label47+token_ring.12.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:20:55,414 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:20:55,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:20:55,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 01:20:55,462 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 01:20:55,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 01:20:55,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 01:20:55,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 01:20:55,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 01:20:55,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 01:20:55,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 01:20:55,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 01:20:55,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:20:55,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:20:55,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:20:55,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:20:55,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:20:55,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:20:55,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:20:55,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:20:55,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:20:55,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:20:55,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:20:55,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:20:55,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 01:20:55,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 01:20:55,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 01:20:55,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 01:20:55,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 01:20:55,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 01:20:55,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 01:20:55,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 01:20:55,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 01:20:55,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 01:20:55,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 01:20:55,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 01:20:55,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 01:20:55,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 01:20:55,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:20:55,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:20:55,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:20:55,500 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 [2022-01-11 01:20:55,518 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:20:55,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:20:55,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:20:55,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:20:55,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:20:55,520 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:20:55,520 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:20:55,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:20:55,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:20:55,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:20:55,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:20:55,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:20:55,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:20:55,521 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:20:55,521 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:20:55,521 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:20:55,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:20:55,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:20:55,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:20:55,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:20:55,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:20:55,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:20:55,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:20:55,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:20:55,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:20:55,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:20:55,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:20:55,522 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:20:55,522 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:20:55,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:20:55,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:20:55,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:20:55,523 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:20:55,523 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:20:55,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:20:55,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:20:55,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:20:55,761 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:20:55,761 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:20:55,762 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label47+token_ring.12.cil-2.c [2022-01-11 01:20:55,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f7d63e9f/637e9a7a706c443ab6657e7b921ebe9e/FLAG77b0f6182 [2022-01-11 01:20:56,470 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:20:56,471 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label47+token_ring.12.cil-2.c [2022-01-11 01:20:56,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f7d63e9f/637e9a7a706c443ab6657e7b921ebe9e/FLAG77b0f6182 [2022-01-11 01:20:56,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f7d63e9f/637e9a7a706c443ab6657e7b921ebe9e [2022-01-11 01:20:56,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:20:56,564 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:20:56,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:20:56,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:20:56,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:20:56,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:20:56" (1/1) ... [2022-01-11 01:20:56,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e5512b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:20:56, skipping insertion in model container [2022-01-11 01:20:56,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:20:56" (1/1) ... [2022-01-11 01:20:56,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:20:56,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:20:57,988 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label47+token_ring.12.cil-2.c[377612,377625] [2022-01-11 01:20:58,019 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label47+token_ring.12.cil-2.c[383339,383352] [2022-01-11 01:20:58,215 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:20:58,224 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:20:58,868 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label47+token_ring.12.cil-2.c[377612,377625] [2022-01-11 01:20:58,877 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label47+token_ring.12.cil-2.c[383339,383352] [2022-01-11 01:20:58,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:20:58,950 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:20:58,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:20:58 WrapperNode [2022-01-11 01:20:58,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:20:58,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:20:58,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:20:58,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:20:58,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:20:58" (1/1) ... [2022-01-11 01:20:59,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:20:58" (1/1) ... [2022-01-11 01:20:59,348 INFO L137 Inliner]: procedures = 69, calls = 77, calls flagged for inlining = 72, calls inlined = 279, statements flattened = 16469 [2022-01-11 01:20:59,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:20:59,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:20:59,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:20:59,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:20:59,355 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:20:58" (1/1) ... [2022-01-11 01:20:59,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:20:58" (1/1) ... [2022-01-11 01:20:59,387 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:20:58" (1/1) ... [2022-01-11 01:20:59,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:20:58" (1/1) ... [2022-01-11 01:20:59,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:20:58" (1/1) ... [2022-01-11 01:20:59,610 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:20:58" (1/1) ... [2022-01-11 01:20:59,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:20:58" (1/1) ... [2022-01-11 01:20:59,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:20:59,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:20:59,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:20:59,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:20:59,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:20:58" (1/1) ... [2022-01-11 01:20:59,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:20:59,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:20:59,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 01:20:59,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 01:20:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:20:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:20:59,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:20:59,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:20:59,955 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:20:59,956 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:21:07,612 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:21:07,637 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:21:07,637 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-01-11 01:21:07,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:21:07 BoogieIcfgContainer [2022-01-11 01:21:07,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:21:07,643 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:21:07,643 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:21:07,644 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:21:07,646 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:21:07" (1/1) ... [2022-01-11 01:21:08,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:21:08 BasicIcfg [2022-01-11 01:21:08,846 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:21:08,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:21:08,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:21:08,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:21:08,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:20:56" (1/4) ... [2022-01-11 01:21:08,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d205789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:21:08, skipping insertion in model container [2022-01-11 01:21:08,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:20:58" (2/4) ... [2022-01-11 01:21:08,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d205789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:21:08, skipping insertion in model container [2022-01-11 01:21:08,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:21:07" (3/4) ... [2022-01-11 01:21:08,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d205789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:21:08, skipping insertion in model container [2022-01-11 01:21:08,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:21:08" (4/4) ... [2022-01-11 01:21:08,853 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label47+token_ring.12.cil-2.cTransformedIcfg [2022-01-11 01:21:08,858 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:21:08,859 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 01:21:08,905 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:21:08,910 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 01:21:08,911 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 01:21:08,957 INFO L276 IsEmpty]: Start isEmpty. Operand has 3975 states, 3972 states have (on average 1.70392749244713) internal successors, (6768), 3974 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:08,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:08,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:08,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:08,969 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:08,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:08,973 INFO L85 PathProgramCache]: Analyzing trace with hash 900996116, now seen corresponding path program 1 times [2022-01-11 01:21:08,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:08,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002326241] [2022-01-11 01:21:08,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:08,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:09,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:09,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:09,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:09,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002326241] [2022-01-11 01:21:09,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002326241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:09,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:09,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:09,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958338734] [2022-01-11 01:21:09,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:09,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:09,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:09,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:09,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:09,363 INFO L87 Difference]: Start difference. First operand has 3975 states, 3972 states have (on average 1.70392749244713) internal successors, (6768), 3974 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:09,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:09,612 INFO L93 Difference]: Finished difference Result 9465 states and 15784 transitions. [2022-01-11 01:21:09,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:09,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:09,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:09,642 INFO L225 Difference]: With dead ends: 9465 [2022-01-11 01:21:09,642 INFO L226 Difference]: Without dead ends: 5439 [2022-01-11 01:21:09,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:09,658 INFO L933 BasicCegarLoop]: 6667 mSDtfsCounter, 6516 mSDsluCounter, 2379 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6516 SdHoareTripleChecker+Valid, 9046 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:09,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6516 Valid, 9046 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:09,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5439 states. [2022-01-11 01:21:09,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5439 to 5437. [2022-01-11 01:21:09,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6281508739650414) internal successors, (8849), 5436 states have internal predecessors, (8849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:09,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8849 transitions. [2022-01-11 01:21:09,860 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8849 transitions. Word has length 165 [2022-01-11 01:21:09,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:09,861 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8849 transitions. [2022-01-11 01:21:09,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:09,862 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8849 transitions. [2022-01-11 01:21:09,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:09,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:09,869 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:09,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:21:09,869 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:09,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:09,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1696253644, now seen corresponding path program 1 times [2022-01-11 01:21:09,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:09,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240837448] [2022-01-11 01:21:09,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:09,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:09,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:09,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:09,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240837448] [2022-01-11 01:21:09,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240837448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:09,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:09,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:09,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079614715] [2022-01-11 01:21:09,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:09,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:09,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:09,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:09,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:09,954 INFO L87 Difference]: Start difference. First operand 5437 states and 8849 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:10,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:10,202 INFO L93 Difference]: Finished difference Result 8732 states and 13704 transitions. [2022-01-11 01:21:10,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:10,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:10,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:10,218 INFO L225 Difference]: With dead ends: 8732 [2022-01-11 01:21:10,219 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:10,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:10,225 INFO L933 BasicCegarLoop]: 6594 mSDtfsCounter, 6578 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6578 SdHoareTripleChecker+Valid, 6594 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:10,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6578 Valid, 6594 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:10,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:10,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:10,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6266789328426863) internal successors, (8841), 5436 states have internal predecessors, (8841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:10,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8841 transitions. [2022-01-11 01:21:10,337 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8841 transitions. Word has length 165 [2022-01-11 01:21:10,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:10,338 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8841 transitions. [2022-01-11 01:21:10,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:10,339 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8841 transitions. [2022-01-11 01:21:10,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:10,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:10,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:10,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 01:21:10,348 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:10,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:10,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1845173844, now seen corresponding path program 1 times [2022-01-11 01:21:10,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:10,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580338919] [2022-01-11 01:21:10,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:10,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:10,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:10,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:10,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580338919] [2022-01-11 01:21:10,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580338919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:10,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:10,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:10,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265152955] [2022-01-11 01:21:10,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:10,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:10,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:10,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:10,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:10,442 INFO L87 Difference]: Start difference. First operand 5437 states and 8841 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:10,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:10,534 INFO L93 Difference]: Finished difference Result 8731 states and 13687 transitions. [2022-01-11 01:21:10,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:10,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:10,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:10,551 INFO L225 Difference]: With dead ends: 8731 [2022-01-11 01:21:10,551 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:10,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:10,559 INFO L933 BasicCegarLoop]: 6589 mSDtfsCounter, 6572 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6572 SdHoareTripleChecker+Valid, 6589 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:10,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6572 Valid, 6589 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:10,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:10,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:10,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6252069917203311) internal successors, (8833), 5436 states have internal predecessors, (8833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:10,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8833 transitions. [2022-01-11 01:21:10,676 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8833 transitions. Word has length 165 [2022-01-11 01:21:10,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:10,676 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8833 transitions. [2022-01-11 01:21:10,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:10,677 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8833 transitions. [2022-01-11 01:21:10,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:10,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:10,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:10,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 01:21:10,678 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:10,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:10,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1543771444, now seen corresponding path program 1 times [2022-01-11 01:21:10,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:10,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7740236] [2022-01-11 01:21:10,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:10,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:10,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:10,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7740236] [2022-01-11 01:21:10,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7740236] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:10,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:10,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:10,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691553491] [2022-01-11 01:21:10,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:10,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:10,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:10,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:10,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:10,719 INFO L87 Difference]: Start difference. First operand 5437 states and 8833 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:10,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:10,811 INFO L93 Difference]: Finished difference Result 8730 states and 13670 transitions. [2022-01-11 01:21:10,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:10,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:10,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:10,826 INFO L225 Difference]: With dead ends: 8730 [2022-01-11 01:21:10,827 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:10,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:10,832 INFO L933 BasicCegarLoop]: 6584 mSDtfsCounter, 6566 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6566 SdHoareTripleChecker+Valid, 6584 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:10,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6566 Valid, 6584 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:10,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:10,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:10,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6237350505979762) internal successors, (8825), 5436 states have internal predecessors, (8825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:10,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8825 transitions. [2022-01-11 01:21:10,935 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8825 transitions. Word has length 165 [2022-01-11 01:21:10,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:10,935 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8825 transitions. [2022-01-11 01:21:10,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:10,936 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8825 transitions. [2022-01-11 01:21:10,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:10,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:10,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:10,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 01:21:10,937 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:10,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:10,938 INFO L85 PathProgramCache]: Analyzing trace with hash -544161196, now seen corresponding path program 1 times [2022-01-11 01:21:10,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:10,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307837837] [2022-01-11 01:21:10,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:10,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:10,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:10,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307837837] [2022-01-11 01:21:10,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307837837] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:10,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:10,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:10,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229480621] [2022-01-11 01:21:10,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:10,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:10,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:10,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:10,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:10,975 INFO L87 Difference]: Start difference. First operand 5437 states and 8825 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:11,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:11,070 INFO L93 Difference]: Finished difference Result 8729 states and 13653 transitions. [2022-01-11 01:21:11,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:11,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:11,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:11,086 INFO L225 Difference]: With dead ends: 8729 [2022-01-11 01:21:11,086 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:11,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:11,093 INFO L933 BasicCegarLoop]: 6579 mSDtfsCounter, 6560 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6560 SdHoareTripleChecker+Valid, 6579 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:11,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6560 Valid, 6579 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:11,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:11,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:11,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.622263109475621) internal successors, (8817), 5436 states have internal predecessors, (8817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:11,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8817 transitions. [2022-01-11 01:21:11,337 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8817 transitions. Word has length 165 [2022-01-11 01:21:11,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:11,341 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8817 transitions. [2022-01-11 01:21:11,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:11,342 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8817 transitions. [2022-01-11 01:21:11,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:11,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:11,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:11,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 01:21:11,343 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:11,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:11,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1328148788, now seen corresponding path program 1 times [2022-01-11 01:21:11,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:11,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129653713] [2022-01-11 01:21:11,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:11,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:11,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:11,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:11,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129653713] [2022-01-11 01:21:11,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129653713] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:11,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:11,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:11,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259571231] [2022-01-11 01:21:11,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:11,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:11,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:11,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:11,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:11,401 INFO L87 Difference]: Start difference. First operand 5437 states and 8817 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:11,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:11,516 INFO L93 Difference]: Finished difference Result 8728 states and 13636 transitions. [2022-01-11 01:21:11,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:11,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:11,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:11,525 INFO L225 Difference]: With dead ends: 8728 [2022-01-11 01:21:11,526 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:11,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:11,534 INFO L933 BasicCegarLoop]: 6574 mSDtfsCounter, 6554 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6554 SdHoareTripleChecker+Valid, 6574 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:11,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6554 Valid, 6574 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:11,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:11,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:11,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6207911683532659) internal successors, (8809), 5436 states have internal predecessors, (8809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:11,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8809 transitions. [2022-01-11 01:21:11,674 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8809 transitions. Word has length 165 [2022-01-11 01:21:11,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:11,675 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8809 transitions. [2022-01-11 01:21:11,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:11,675 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8809 transitions. [2022-01-11 01:21:11,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:11,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:11,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:11,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 01:21:11,677 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:11,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:11,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1111451220, now seen corresponding path program 1 times [2022-01-11 01:21:11,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:11,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776884102] [2022-01-11 01:21:11,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:11,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:11,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:11,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:11,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:11,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776884102] [2022-01-11 01:21:11,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776884102] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:11,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:11,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:11,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393538994] [2022-01-11 01:21:11,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:11,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:11,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:11,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:11,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:11,724 INFO L87 Difference]: Start difference. First operand 5437 states and 8809 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:11,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:11,881 INFO L93 Difference]: Finished difference Result 8727 states and 13619 transitions. [2022-01-11 01:21:11,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:11,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:11,890 INFO L225 Difference]: With dead ends: 8727 [2022-01-11 01:21:11,890 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:11,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:11,898 INFO L933 BasicCegarLoop]: 6569 mSDtfsCounter, 6548 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6548 SdHoareTripleChecker+Valid, 6569 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:11,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6548 Valid, 6569 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:11,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:12,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:12,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6193192272309107) internal successors, (8801), 5436 states have internal predecessors, (8801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:12,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8801 transitions. [2022-01-11 01:21:12,043 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8801 transitions. Word has length 165 [2022-01-11 01:21:12,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:12,044 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8801 transitions. [2022-01-11 01:21:12,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:12,044 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8801 transitions. [2022-01-11 01:21:12,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:12,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:12,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:12,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 01:21:12,046 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:12,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:12,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1243008308, now seen corresponding path program 1 times [2022-01-11 01:21:12,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:12,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718677637] [2022-01-11 01:21:12,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:12,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:12,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:12,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:12,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718677637] [2022-01-11 01:21:12,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718677637] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:12,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:12,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:12,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416358037] [2022-01-11 01:21:12,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:12,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:12,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:12,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:12,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:12,092 INFO L87 Difference]: Start difference. First operand 5437 states and 8801 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:12,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:12,222 INFO L93 Difference]: Finished difference Result 8726 states and 13602 transitions. [2022-01-11 01:21:12,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:12,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:12,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:12,233 INFO L225 Difference]: With dead ends: 8726 [2022-01-11 01:21:12,233 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:12,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:12,239 INFO L933 BasicCegarLoop]: 6564 mSDtfsCounter, 6542 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6542 SdHoareTripleChecker+Valid, 6564 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:12,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6542 Valid, 6564 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:12,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:12,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:12,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6178472861085555) internal successors, (8793), 5436 states have internal predecessors, (8793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:12,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8793 transitions. [2022-01-11 01:21:12,436 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8793 transitions. Word has length 165 [2022-01-11 01:21:12,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:12,437 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8793 transitions. [2022-01-11 01:21:12,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:12,437 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8793 transitions. [2022-01-11 01:21:12,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:12,438 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:12,438 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:12,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 01:21:12,438 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:12,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:12,439 INFO L85 PathProgramCache]: Analyzing trace with hash 138873428, now seen corresponding path program 1 times [2022-01-11 01:21:12,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:12,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168798359] [2022-01-11 01:21:12,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:12,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:12,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:12,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:12,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168798359] [2022-01-11 01:21:12,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168798359] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:12,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:12,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:12,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127843621] [2022-01-11 01:21:12,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:12,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:12,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:12,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:12,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:12,480 INFO L87 Difference]: Start difference. First operand 5437 states and 8793 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:12,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:12,589 INFO L93 Difference]: Finished difference Result 8725 states and 13585 transitions. [2022-01-11 01:21:12,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:12,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:12,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:12,599 INFO L225 Difference]: With dead ends: 8725 [2022-01-11 01:21:12,599 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:12,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:12,606 INFO L933 BasicCegarLoop]: 6559 mSDtfsCounter, 6536 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6536 SdHoareTripleChecker+Valid, 6559 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:12,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6536 Valid, 6559 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:12,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:12,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:12,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6163753449862006) internal successors, (8785), 5436 states have internal predecessors, (8785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:12,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8785 transitions. [2022-01-11 01:21:12,725 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8785 transitions. Word has length 165 [2022-01-11 01:21:12,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:12,725 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8785 transitions. [2022-01-11 01:21:12,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:12,728 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8785 transitions. [2022-01-11 01:21:12,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:12,729 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:12,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:12,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 01:21:12,729 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:12,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:12,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1836406476, now seen corresponding path program 1 times [2022-01-11 01:21:12,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:12,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294397620] [2022-01-11 01:21:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:12,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:12,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:12,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:12,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294397620] [2022-01-11 01:21:12,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294397620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:12,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:12,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:12,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107835904] [2022-01-11 01:21:12,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:12,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:12,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:12,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:12,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:12,774 INFO L87 Difference]: Start difference. First operand 5437 states and 8785 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:12,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:12,881 INFO L93 Difference]: Finished difference Result 8724 states and 13568 transitions. [2022-01-11 01:21:12,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:12,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:12,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:12,891 INFO L225 Difference]: With dead ends: 8724 [2022-01-11 01:21:12,891 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:12,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:12,898 INFO L933 BasicCegarLoop]: 6554 mSDtfsCounter, 6530 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6530 SdHoareTripleChecker+Valid, 6554 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:12,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6530 Valid, 6554 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:12,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:13,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:13,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6149034038638455) internal successors, (8777), 5436 states have internal predecessors, (8777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8777 transitions. [2022-01-11 01:21:13,023 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8777 transitions. Word has length 165 [2022-01-11 01:21:13,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:13,023 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8777 transitions. [2022-01-11 01:21:13,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:13,024 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8777 transitions. [2022-01-11 01:21:13,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:13,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:13,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:13,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 01:21:13,025 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:13,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:13,026 INFO L85 PathProgramCache]: Analyzing trace with hash 870821460, now seen corresponding path program 1 times [2022-01-11 01:21:13,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:13,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597823267] [2022-01-11 01:21:13,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:13,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:13,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:13,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597823267] [2022-01-11 01:21:13,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597823267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:13,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:13,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:13,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355594737] [2022-01-11 01:21:13,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:13,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:13,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:13,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:13,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:13,072 INFO L87 Difference]: Start difference. First operand 5437 states and 8777 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:13,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:13,198 INFO L93 Difference]: Finished difference Result 8723 states and 13551 transitions. [2022-01-11 01:21:13,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:13,199 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:13,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:13,209 INFO L225 Difference]: With dead ends: 8723 [2022-01-11 01:21:13,209 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:13,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:13,216 INFO L933 BasicCegarLoop]: 6549 mSDtfsCounter, 6524 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6524 SdHoareTripleChecker+Valid, 6549 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:13,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6524 Valid, 6549 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:13,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:13,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:13,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6134314627414903) internal successors, (8769), 5436 states have internal predecessors, (8769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:13,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8769 transitions. [2022-01-11 01:21:13,374 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8769 transitions. Word has length 165 [2022-01-11 01:21:13,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:13,375 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8769 transitions. [2022-01-11 01:21:13,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:13,376 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8769 transitions. [2022-01-11 01:21:13,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:13,377 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:13,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:13,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 01:21:13,378 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:13,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:13,378 INFO L85 PathProgramCache]: Analyzing trace with hash -565869260, now seen corresponding path program 1 times [2022-01-11 01:21:13,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:13,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530535415] [2022-01-11 01:21:13,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:13,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:13,420 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:13,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530535415] [2022-01-11 01:21:13,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530535415] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:13,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:13,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:13,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854163536] [2022-01-11 01:21:13,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:13,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:13,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:13,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:13,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:13,421 INFO L87 Difference]: Start difference. First operand 5437 states and 8769 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:13,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:13,562 INFO L93 Difference]: Finished difference Result 8722 states and 13534 transitions. [2022-01-11 01:21:13,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:13,563 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:13,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:13,572 INFO L225 Difference]: With dead ends: 8722 [2022-01-11 01:21:13,572 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:13,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:13,578 INFO L933 BasicCegarLoop]: 6544 mSDtfsCounter, 6518 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6518 SdHoareTripleChecker+Valid, 6544 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:13,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6518 Valid, 6544 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:13,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:13,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:13,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6119595216191351) internal successors, (8761), 5436 states have internal predecessors, (8761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8761 transitions. [2022-01-11 01:21:13,700 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8761 transitions. Word has length 165 [2022-01-11 01:21:13,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:13,700 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8761 transitions. [2022-01-11 01:21:13,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:13,700 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8761 transitions. [2022-01-11 01:21:13,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:13,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:13,702 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:13,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 01:21:13,702 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:13,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:13,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1465995860, now seen corresponding path program 1 times [2022-01-11 01:21:13,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:13,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757210838] [2022-01-11 01:21:13,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:13,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:13,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:13,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:13,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757210838] [2022-01-11 01:21:13,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757210838] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:13,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:13,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:13,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816197018] [2022-01-11 01:21:13,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:13,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:13,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:13,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:13,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:13,740 INFO L87 Difference]: Start difference. First operand 5437 states and 8761 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:13,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:13,886 INFO L93 Difference]: Finished difference Result 8721 states and 13517 transitions. [2022-01-11 01:21:13,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:13,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:13,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:13,896 INFO L225 Difference]: With dead ends: 8721 [2022-01-11 01:21:13,897 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:13,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:13,903 INFO L933 BasicCegarLoop]: 6509 mSDtfsCounter, 6365 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6365 SdHoareTripleChecker+Valid, 6637 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:13,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6365 Valid, 6637 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:13,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:14,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:14,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.6053357865685371) internal successors, (8725), 5436 states have internal predecessors, (8725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:14,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8725 transitions. [2022-01-11 01:21:14,024 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8725 transitions. Word has length 165 [2022-01-11 01:21:14,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:14,024 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8725 transitions. [2022-01-11 01:21:14,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:14,024 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8725 transitions. [2022-01-11 01:21:14,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:14,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:14,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:14,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 01:21:14,026 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:14,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:14,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1090569293, now seen corresponding path program 1 times [2022-01-11 01:21:14,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:14,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637258355] [2022-01-11 01:21:14,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:14,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:14,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:14,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:14,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637258355] [2022-01-11 01:21:14,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637258355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:14,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:14,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:14,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002463541] [2022-01-11 01:21:14,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:14,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:14,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:14,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:14,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:14,066 INFO L87 Difference]: Start difference. First operand 5437 states and 8725 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:14,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:14,203 INFO L93 Difference]: Finished difference Result 8720 states and 13444 transitions. [2022-01-11 01:21:14,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:14,203 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:14,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:14,212 INFO L225 Difference]: With dead ends: 8720 [2022-01-11 01:21:14,212 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:14,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:14,217 INFO L933 BasicCegarLoop]: 6489 mSDtfsCounter, 6345 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6345 SdHoareTripleChecker+Valid, 6616 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:14,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6345 Valid, 6616 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:14,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:14,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:14,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5987120515179394) internal successors, (8689), 5436 states have internal predecessors, (8689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:14,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8689 transitions. [2022-01-11 01:21:14,340 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8689 transitions. Word has length 165 [2022-01-11 01:21:14,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:14,341 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8689 transitions. [2022-01-11 01:21:14,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:14,341 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8689 transitions. [2022-01-11 01:21:14,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:14,342 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:14,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:14,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 01:21:14,343 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:14,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:14,343 INFO L85 PathProgramCache]: Analyzing trace with hash -797100398, now seen corresponding path program 1 times [2022-01-11 01:21:14,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:14,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881929838] [2022-01-11 01:21:14,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:14,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:14,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:14,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:14,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881929838] [2022-01-11 01:21:14,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881929838] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:14,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:14,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:14,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086046138] [2022-01-11 01:21:14,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:14,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:14,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:14,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:14,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:14,389 INFO L87 Difference]: Start difference. First operand 5437 states and 8689 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:14,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:14,574 INFO L93 Difference]: Finished difference Result 8718 states and 13369 transitions. [2022-01-11 01:21:14,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:14,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:14,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:14,584 INFO L225 Difference]: With dead ends: 8718 [2022-01-11 01:21:14,585 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:14,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:14,593 INFO L933 BasicCegarLoop]: 6469 mSDtfsCounter, 6324 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6324 SdHoareTripleChecker+Valid, 6595 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:14,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6324 Valid, 6595 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:14,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:14,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5920883164673414) internal successors, (8653), 5436 states have internal predecessors, (8653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:14,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8653 transitions. [2022-01-11 01:21:14,725 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8653 transitions. Word has length 165 [2022-01-11 01:21:14,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:14,725 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8653 transitions. [2022-01-11 01:21:14,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:14,725 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8653 transitions. [2022-01-11 01:21:14,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:14,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:14,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:14,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 01:21:14,727 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:14,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:14,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1292804111, now seen corresponding path program 1 times [2022-01-11 01:21:14,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:14,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710133558] [2022-01-11 01:21:14,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:14,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:14,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:14,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:14,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710133558] [2022-01-11 01:21:14,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710133558] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:14,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:14,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:14,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673045126] [2022-01-11 01:21:14,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:14,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:14,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:14,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:14,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:14,766 INFO L87 Difference]: Start difference. First operand 5437 states and 8653 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:14,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:14,914 INFO L93 Difference]: Finished difference Result 8717 states and 13296 transitions. [2022-01-11 01:21:14,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:14,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:14,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:14,923 INFO L225 Difference]: With dead ends: 8717 [2022-01-11 01:21:14,923 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:14,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:14,927 INFO L933 BasicCegarLoop]: 6449 mSDtfsCounter, 6304 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6304 SdHoareTripleChecker+Valid, 6574 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:14,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6304 Valid, 6574 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:14,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:15,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:15,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5854645814167434) internal successors, (8617), 5436 states have internal predecessors, (8617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:15,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8617 transitions. [2022-01-11 01:21:15,059 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8617 transitions. Word has length 165 [2022-01-11 01:21:15,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:15,059 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8617 transitions. [2022-01-11 01:21:15,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:15,060 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8617 transitions. [2022-01-11 01:21:15,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:15,060 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:15,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:15,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 01:21:15,061 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:15,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:15,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1517848144, now seen corresponding path program 1 times [2022-01-11 01:21:15,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:15,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105512789] [2022-01-11 01:21:15,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:15,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:15,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:15,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105512789] [2022-01-11 01:21:15,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105512789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:15,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:15,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:15,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904276748] [2022-01-11 01:21:15,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:15,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:15,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:15,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:15,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:15,097 INFO L87 Difference]: Start difference. First operand 5437 states and 8617 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:15,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:15,240 INFO L93 Difference]: Finished difference Result 8716 states and 13223 transitions. [2022-01-11 01:21:15,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:15,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:15,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:15,249 INFO L225 Difference]: With dead ends: 8716 [2022-01-11 01:21:15,249 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:15,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:15,254 INFO L933 BasicCegarLoop]: 6429 mSDtfsCounter, 6284 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6284 SdHoareTripleChecker+Valid, 6553 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:15,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6284 Valid, 6553 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:15,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:15,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5788408463661454) internal successors, (8581), 5436 states have internal predecessors, (8581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:15,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8581 transitions. [2022-01-11 01:21:15,471 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8581 transitions. Word has length 165 [2022-01-11 01:21:15,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:15,471 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8581 transitions. [2022-01-11 01:21:15,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:15,472 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8581 transitions. [2022-01-11 01:21:15,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:15,472 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:15,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:15,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 01:21:15,473 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:15,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:15,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1090166319, now seen corresponding path program 1 times [2022-01-11 01:21:15,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:15,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556899857] [2022-01-11 01:21:15,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:15,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:15,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:15,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:15,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556899857] [2022-01-11 01:21:15,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556899857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:15,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:15,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:15,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401913525] [2022-01-11 01:21:15,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:15,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:15,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:15,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:15,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:15,519 INFO L87 Difference]: Start difference. First operand 5437 states and 8581 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:15,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:15,664 INFO L93 Difference]: Finished difference Result 8715 states and 13150 transitions. [2022-01-11 01:21:15,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:15,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:15,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:15,703 INFO L225 Difference]: With dead ends: 8715 [2022-01-11 01:21:15,704 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:15,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:15,709 INFO L933 BasicCegarLoop]: 6409 mSDtfsCounter, 6264 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6264 SdHoareTripleChecker+Valid, 6532 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:15,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6264 Valid, 6532 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:15,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:15,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:15,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5722171113155474) internal successors, (8545), 5436 states have internal predecessors, (8545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:15,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8545 transitions. [2022-01-11 01:21:15,853 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8545 transitions. Word has length 165 [2022-01-11 01:21:15,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:15,853 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8545 transitions. [2022-01-11 01:21:15,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:15,854 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8545 transitions. [2022-01-11 01:21:15,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:15,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:15,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:15,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 01:21:15,855 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:15,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:15,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1064043278, now seen corresponding path program 1 times [2022-01-11 01:21:15,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:15,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524631089] [2022-01-11 01:21:15,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:15,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:15,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:15,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524631089] [2022-01-11 01:21:15,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524631089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:15,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:15,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:15,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750814052] [2022-01-11 01:21:15,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:15,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:15,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:15,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:15,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:15,905 INFO L87 Difference]: Start difference. First operand 5437 states and 8545 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:16,055 INFO L93 Difference]: Finished difference Result 8714 states and 13077 transitions. [2022-01-11 01:21:16,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:16,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:16,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:16,068 INFO L225 Difference]: With dead ends: 8714 [2022-01-11 01:21:16,068 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:16,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:16,075 INFO L933 BasicCegarLoop]: 6389 mSDtfsCounter, 6244 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6244 SdHoareTripleChecker+Valid, 6511 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:16,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6244 Valid, 6511 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:16,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:16,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:16,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5655933762649494) internal successors, (8509), 5436 states have internal predecessors, (8509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8509 transitions. [2022-01-11 01:21:16,227 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8509 transitions. Word has length 165 [2022-01-11 01:21:16,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:16,227 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8509 transitions. [2022-01-11 01:21:16,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,227 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8509 transitions. [2022-01-11 01:21:16,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:16,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:16,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:16,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 01:21:16,228 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:16,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:16,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1003239059, now seen corresponding path program 1 times [2022-01-11 01:21:16,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:16,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498705295] [2022-01-11 01:21:16,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:16,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:16,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:16,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:16,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498705295] [2022-01-11 01:21:16,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498705295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:16,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:16,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:16,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666913428] [2022-01-11 01:21:16,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:16,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:16,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:16,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:16,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:16,270 INFO L87 Difference]: Start difference. First operand 5437 states and 8509 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:16,418 INFO L93 Difference]: Finished difference Result 8713 states and 13004 transitions. [2022-01-11 01:21:16,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:16,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:16,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:16,426 INFO L225 Difference]: With dead ends: 8713 [2022-01-11 01:21:16,426 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:16,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:16,431 INFO L933 BasicCegarLoop]: 6369 mSDtfsCounter, 6224 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6224 SdHoareTripleChecker+Valid, 6490 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:16,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6224 Valid, 6490 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:16,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:16,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:16,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5589696412143514) internal successors, (8473), 5436 states have internal predecessors, (8473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8473 transitions. [2022-01-11 01:21:16,577 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8473 transitions. Word has length 165 [2022-01-11 01:21:16,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:16,577 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8473 transitions. [2022-01-11 01:21:16,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,577 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8473 transitions. [2022-01-11 01:21:16,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:16,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:16,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:16,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 01:21:16,579 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:16,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:16,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1806904524, now seen corresponding path program 1 times [2022-01-11 01:21:16,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:16,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452917443] [2022-01-11 01:21:16,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:16,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:16,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:16,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:16,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452917443] [2022-01-11 01:21:16,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452917443] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:16,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:16,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:16,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777161976] [2022-01-11 01:21:16,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:16,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:16,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:16,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:16,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:16,620 INFO L87 Difference]: Start difference. First operand 5437 states and 8473 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:16,776 INFO L93 Difference]: Finished difference Result 8712 states and 12931 transitions. [2022-01-11 01:21:16,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:16,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:16,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:16,784 INFO L225 Difference]: With dead ends: 8712 [2022-01-11 01:21:16,784 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:16,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:16,788 INFO L933 BasicCegarLoop]: 6349 mSDtfsCounter, 6204 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6204 SdHoareTripleChecker+Valid, 6469 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:16,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6204 Valid, 6469 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:16,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:16,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:16,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5523459061637535) internal successors, (8437), 5436 states have internal predecessors, (8437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8437 transitions. [2022-01-11 01:21:16,930 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8437 transitions. Word has length 165 [2022-01-11 01:21:16,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:16,930 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8437 transitions. [2022-01-11 01:21:16,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:16,930 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8437 transitions. [2022-01-11 01:21:16,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:16,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:16,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:16,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 01:21:16,932 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:16,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:16,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1609014869, now seen corresponding path program 1 times [2022-01-11 01:21:16,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:16,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045195311] [2022-01-11 01:21:16,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:16,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:16,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:16,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:16,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045195311] [2022-01-11 01:21:16,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045195311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:16,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:16,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:16,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084419875] [2022-01-11 01:21:16,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:16,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:16,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:16,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:16,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:16,969 INFO L87 Difference]: Start difference. First operand 5437 states and 8437 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:17,181 INFO L93 Difference]: Finished difference Result 8711 states and 12858 transitions. [2022-01-11 01:21:17,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:17,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:17,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:17,188 INFO L225 Difference]: With dead ends: 8711 [2022-01-11 01:21:17,188 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:17,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:17,190 INFO L933 BasicCegarLoop]: 6329 mSDtfsCounter, 6184 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6184 SdHoareTripleChecker+Valid, 6448 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:17,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6184 Valid, 6448 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:17,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:17,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:17,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5457221711131555) internal successors, (8401), 5436 states have internal predecessors, (8401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8401 transitions. [2022-01-11 01:21:17,352 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8401 transitions. Word has length 165 [2022-01-11 01:21:17,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:17,352 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8401 transitions. [2022-01-11 01:21:17,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8401 transitions. [2022-01-11 01:21:17,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:17,353 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:17,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:17,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 01:21:17,354 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:17,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:17,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1461091446, now seen corresponding path program 1 times [2022-01-11 01:21:17,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:17,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338612674] [2022-01-11 01:21:17,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:17,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:17,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:17,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:17,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338612674] [2022-01-11 01:21:17,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338612674] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:17,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:17,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:17,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849328125] [2022-01-11 01:21:17,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:17,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:17,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:17,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:17,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:17,392 INFO L87 Difference]: Start difference. First operand 5437 states and 8401 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:17,554 INFO L93 Difference]: Finished difference Result 8710 states and 12785 transitions. [2022-01-11 01:21:17,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:17,555 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:17,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:17,561 INFO L225 Difference]: With dead ends: 8710 [2022-01-11 01:21:17,562 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:17,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:17,565 INFO L933 BasicCegarLoop]: 6309 mSDtfsCounter, 6164 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6164 SdHoareTripleChecker+Valid, 6427 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:17,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6164 Valid, 6427 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:17,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:17,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:17,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5390984360625575) internal successors, (8365), 5436 states have internal predecessors, (8365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8365 transitions. [2022-01-11 01:21:17,715 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8365 transitions. Word has length 165 [2022-01-11 01:21:17,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:17,716 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8365 transitions. [2022-01-11 01:21:17,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8365 transitions. [2022-01-11 01:21:17,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:17,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:17,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:17,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 01:21:17,717 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:17,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:17,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1014497450, now seen corresponding path program 1 times [2022-01-11 01:21:17,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:17,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890533719] [2022-01-11 01:21:17,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:17,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:17,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:17,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:17,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890533719] [2022-01-11 01:21:17,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890533719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:17,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:17,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:17,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289076509] [2022-01-11 01:21:17,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:17,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:17,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:17,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:17,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:17,749 INFO L87 Difference]: Start difference. First operand 5437 states and 8365 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:17,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:17,926 INFO L93 Difference]: Finished difference Result 8709 states and 12712 transitions. [2022-01-11 01:21:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:17,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:17,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:17,933 INFO L225 Difference]: With dead ends: 8709 [2022-01-11 01:21:17,933 INFO L226 Difference]: Without dead ends: 5437 [2022-01-11 01:21:17,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:17,937 INFO L933 BasicCegarLoop]: 6289 mSDtfsCounter, 6144 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6144 SdHoareTripleChecker+Valid, 6406 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:17,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6144 Valid, 6406 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:17,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5437 states. [2022-01-11 01:21:18,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5437 to 5437. [2022-01-11 01:21:18,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5437 states, 5435 states have (on average 1.5324747010119595) internal successors, (8329), 5436 states have internal predecessors, (8329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:18,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5437 states to 5437 states and 8329 transitions. [2022-01-11 01:21:18,087 INFO L78 Accepts]: Start accepts. Automaton has 5437 states and 8329 transitions. Word has length 165 [2022-01-11 01:21:18,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:18,088 INFO L470 AbstractCegarLoop]: Abstraction has 5437 states and 8329 transitions. [2022-01-11 01:21:18,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:18,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5437 states and 8329 transitions. [2022-01-11 01:21:18,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:18,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:18,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:18,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 01:21:18,089 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:18,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:18,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1795251959, now seen corresponding path program 1 times [2022-01-11 01:21:18,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:18,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761954611] [2022-01-11 01:21:18,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:18,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:18,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:18,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:18,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761954611] [2022-01-11 01:21:18,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761954611] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:18,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:18,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:21:18,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594621530] [2022-01-11 01:21:18,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:18,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:21:18,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:18,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:21:18,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:21:18,145 INFO L87 Difference]: Start difference. First operand 5437 states and 8329 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:18,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:18,537 INFO L93 Difference]: Finished difference Result 9821 states and 14177 transitions. [2022-01-11 01:21:18,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:21:18,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:18,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:18,546 INFO L225 Difference]: With dead ends: 9821 [2022-01-11 01:21:18,546 INFO L226 Difference]: Without dead ends: 6563 [2022-01-11 01:21:18,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:21:18,552 INFO L933 BasicCegarLoop]: 6455 mSDtfsCounter, 6580 mSDsluCounter, 14230 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6580 SdHoareTripleChecker+Valid, 20685 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:18,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6580 Valid, 20685 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:21:18,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6563 states. [2022-01-11 01:21:18,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6563 to 5443. [2022-01-11 01:21:18,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5443 states, 5441 states have (on average 1.526741407829443) internal successors, (8307), 5442 states have internal predecessors, (8307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:18,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5443 states to 5443 states and 8307 transitions. [2022-01-11 01:21:18,769 INFO L78 Accepts]: Start accepts. Automaton has 5443 states and 8307 transitions. Word has length 165 [2022-01-11 01:21:18,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:18,770 INFO L470 AbstractCegarLoop]: Abstraction has 5443 states and 8307 transitions. [2022-01-11 01:21:18,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:18,770 INFO L276 IsEmpty]: Start isEmpty. Operand 5443 states and 8307 transitions. [2022-01-11 01:21:18,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:18,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:18,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:18,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 01:21:18,772 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:18,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:18,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1980423050, now seen corresponding path program 1 times [2022-01-11 01:21:18,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:18,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114991507] [2022-01-11 01:21:18,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:18,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:18,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:18,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:18,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:18,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114991507] [2022-01-11 01:21:18,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114991507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:18,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:18,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:18,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099173369] [2022-01-11 01:21:18,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:18,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:18,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:18,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:18,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:18,818 INFO L87 Difference]: Start difference. First operand 5443 states and 8307 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:19,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:19,196 INFO L93 Difference]: Finished difference Result 11646 states and 16418 transitions. [2022-01-11 01:21:19,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:19,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:19,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:19,208 INFO L225 Difference]: With dead ends: 11646 [2022-01-11 01:21:19,208 INFO L226 Difference]: Without dead ends: 8384 [2022-01-11 01:21:19,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:19,216 INFO L933 BasicCegarLoop]: 6275 mSDtfsCounter, 6066 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6066 SdHoareTripleChecker+Valid, 8370 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:19,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6066 Valid, 8370 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:19,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8384 states. [2022-01-11 01:21:19,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8384 to 8378. [2022-01-11 01:21:19,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8378 states, 8376 states have (on average 1.4461556829035338) internal successors, (12113), 8377 states have internal predecessors, (12113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:19,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8378 states to 8378 states and 12113 transitions. [2022-01-11 01:21:19,549 INFO L78 Accepts]: Start accepts. Automaton has 8378 states and 12113 transitions. Word has length 165 [2022-01-11 01:21:19,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:19,550 INFO L470 AbstractCegarLoop]: Abstraction has 8378 states and 12113 transitions. [2022-01-11 01:21:19,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:19,550 INFO L276 IsEmpty]: Start isEmpty. Operand 8378 states and 12113 transitions. [2022-01-11 01:21:19,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:19,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:19,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:19,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 01:21:19,551 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:19,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:19,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1861272439, now seen corresponding path program 1 times [2022-01-11 01:21:19,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:19,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893100713] [2022-01-11 01:21:19,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:19,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:19,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:19,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:19,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893100713] [2022-01-11 01:21:19,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893100713] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:19,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:19,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:21:19,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851531577] [2022-01-11 01:21:19,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:19,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:21:19,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:19,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:21:19,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:21:19,600 INFO L87 Difference]: Start difference. First operand 8378 states and 12113 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:20,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:20,213 INFO L93 Difference]: Finished difference Result 18345 states and 25215 transitions. [2022-01-11 01:21:20,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:21:20,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:20,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:20,229 INFO L225 Difference]: With dead ends: 18345 [2022-01-11 01:21:20,229 INFO L226 Difference]: Without dead ends: 12180 [2022-01-11 01:21:20,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:21:20,237 INFO L933 BasicCegarLoop]: 6343 mSDtfsCounter, 5720 mSDsluCounter, 16071 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5720 SdHoareTripleChecker+Valid, 22414 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:20,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5720 Valid, 22414 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:21:20,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12180 states. [2022-01-11 01:21:20,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12180 to 8390. [2022-01-11 01:21:20,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8390 states, 8388 states have (on average 1.4391988555078683) internal successors, (12072), 8389 states have internal predecessors, (12072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:20,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8390 states to 8390 states and 12072 transitions. [2022-01-11 01:21:20,672 INFO L78 Accepts]: Start accepts. Automaton has 8390 states and 12072 transitions. Word has length 165 [2022-01-11 01:21:20,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:20,673 INFO L470 AbstractCegarLoop]: Abstraction has 8390 states and 12072 transitions. [2022-01-11 01:21:20,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:20,673 INFO L276 IsEmpty]: Start isEmpty. Operand 8390 states and 12072 transitions. [2022-01-11 01:21:20,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:20,674 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:20,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:20,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 01:21:20,674 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:20,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:20,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1741152566, now seen corresponding path program 1 times [2022-01-11 01:21:20,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:20,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40730793] [2022-01-11 01:21:20,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:20,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:20,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:20,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:20,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40730793] [2022-01-11 01:21:20,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40730793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:20,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:20,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:21:20,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662938469] [2022-01-11 01:21:20,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:20,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:21:20,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:20,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:21:20,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:21:20,745 INFO L87 Difference]: Start difference. First operand 8390 states and 12072 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:21,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:21,443 INFO L93 Difference]: Finished difference Result 18696 states and 25505 transitions. [2022-01-11 01:21:21,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:21:21,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:21,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:21,460 INFO L225 Difference]: With dead ends: 18696 [2022-01-11 01:21:21,460 INFO L226 Difference]: Without dead ends: 12526 [2022-01-11 01:21:21,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:21:21,467 INFO L933 BasicCegarLoop]: 6310 mSDtfsCounter, 5529 mSDsluCounter, 16400 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5529 SdHoareTripleChecker+Valid, 22710 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:21,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5529 Valid, 22710 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:21:21,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12526 states. [2022-01-11 01:21:21,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12526 to 8402. [2022-01-11 01:21:21,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8402 states, 8400 states have (on average 1.4322619047619047) internal successors, (12031), 8401 states have internal predecessors, (12031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:21,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8402 states to 8402 states and 12031 transitions. [2022-01-11 01:21:21,912 INFO L78 Accepts]: Start accepts. Automaton has 8402 states and 12031 transitions. Word has length 165 [2022-01-11 01:21:21,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:21,912 INFO L470 AbstractCegarLoop]: Abstraction has 8402 states and 12031 transitions. [2022-01-11 01:21:21,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 5 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:21,912 INFO L276 IsEmpty]: Start isEmpty. Operand 8402 states and 12031 transitions. [2022-01-11 01:21:21,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:21,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:21,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:21,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 01:21:21,913 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:21,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:21,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1598293451, now seen corresponding path program 1 times [2022-01-11 01:21:21,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:21,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394115318] [2022-01-11 01:21:21,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:21,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:21,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:21,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394115318] [2022-01-11 01:21:21,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394115318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:21,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:21,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:21,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824052173] [2022-01-11 01:21:21,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:21,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:21,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:21,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:21,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:21,959 INFO L87 Difference]: Start difference. First operand 8402 states and 12031 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:22,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:22,339 INFO L93 Difference]: Finished difference Result 14663 states and 20070 transitions. [2022-01-11 01:21:22,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:22,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:22,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:22,349 INFO L225 Difference]: With dead ends: 14663 [2022-01-11 01:21:22,349 INFO L226 Difference]: Without dead ends: 8402 [2022-01-11 01:21:22,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:22,355 INFO L933 BasicCegarLoop]: 6251 mSDtfsCounter, 6131 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6131 SdHoareTripleChecker+Valid, 6251 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:22,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6131 Valid, 6251 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:22,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8402 states. [2022-01-11 01:21:22,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8402 to 8402. [2022-01-11 01:21:22,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8402 states, 8400 states have (on average 1.430595238095238) internal successors, (12017), 8401 states have internal predecessors, (12017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:22,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8402 states to 8402 states and 12017 transitions. [2022-01-11 01:21:22,758 INFO L78 Accepts]: Start accepts. Automaton has 8402 states and 12017 transitions. Word has length 165 [2022-01-11 01:21:22,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:22,758 INFO L470 AbstractCegarLoop]: Abstraction has 8402 states and 12017 transitions. [2022-01-11 01:21:22,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:22,759 INFO L276 IsEmpty]: Start isEmpty. Operand 8402 states and 12017 transitions. [2022-01-11 01:21:22,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:22,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:22,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:22,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 01:21:22,760 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:22,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:22,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1235093846, now seen corresponding path program 1 times [2022-01-11 01:21:22,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:22,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312215724] [2022-01-11 01:21:22,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:22,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:22,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:22,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:22,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:22,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312215724] [2022-01-11 01:21:22,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312215724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:22,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:22,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:22,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272391101] [2022-01-11 01:21:22,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:22,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:22,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:22,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:22,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:22,810 INFO L87 Difference]: Start difference. First operand 8402 states and 12017 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:23,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:23,265 INFO L93 Difference]: Finished difference Result 14649 states and 20028 transitions. [2022-01-11 01:21:23,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:23,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:23,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:23,275 INFO L225 Difference]: With dead ends: 14649 [2022-01-11 01:21:23,275 INFO L226 Difference]: Without dead ends: 8402 [2022-01-11 01:21:23,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:23,280 INFO L933 BasicCegarLoop]: 6218 mSDtfsCounter, 5981 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5981 SdHoareTripleChecker+Valid, 6331 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:23,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5981 Valid, 6331 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:23,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8402 states. [2022-01-11 01:21:23,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8402 to 8402. [2022-01-11 01:21:23,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8402 states, 8400 states have (on average 1.4257142857142857) internal successors, (11976), 8401 states have internal predecessors, (11976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:23,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8402 states to 8402 states and 11976 transitions. [2022-01-11 01:21:23,692 INFO L78 Accepts]: Start accepts. Automaton has 8402 states and 11976 transitions. Word has length 165 [2022-01-11 01:21:23,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:23,692 INFO L470 AbstractCegarLoop]: Abstraction has 8402 states and 11976 transitions. [2022-01-11 01:21:23,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:23,693 INFO L276 IsEmpty]: Start isEmpty. Operand 8402 states and 11976 transitions. [2022-01-11 01:21:23,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:21:23,693 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:23,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:23,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 01:21:23,694 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:23,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:23,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1204074039, now seen corresponding path program 1 times [2022-01-11 01:21:23,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:23,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138236144] [2022-01-11 01:21:23,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:23,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:23,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:23,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138236144] [2022-01-11 01:21:23,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138236144] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:23,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:23,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:21:23,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475149677] [2022-01-11 01:21:23,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:23,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:23,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:23,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:23,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:23,760 INFO L87 Difference]: Start difference. First operand 8402 states and 11976 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:24,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:24,608 INFO L93 Difference]: Finished difference Result 20685 states and 27673 transitions. [2022-01-11 01:21:24,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:24,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:21:24,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:24,628 INFO L225 Difference]: With dead ends: 20685 [2022-01-11 01:21:24,629 INFO L226 Difference]: Without dead ends: 14450 [2022-01-11 01:21:24,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:24,638 INFO L933 BasicCegarLoop]: 6218 mSDtfsCounter, 6035 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6035 SdHoareTripleChecker+Valid, 8265 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:24,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6035 Valid, 8265 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:21:24,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14450 states. [2022-01-11 01:21:25,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14450 to 14080. [2022-01-11 01:21:25,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14080 states, 14078 states have (on average 1.3631197613297343) internal successors, (19190), 14079 states have internal predecessors, (19190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:25,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14080 states to 14080 states and 19190 transitions. [2022-01-11 01:21:25,479 INFO L78 Accepts]: Start accepts. Automaton has 14080 states and 19190 transitions. Word has length 165 [2022-01-11 01:21:25,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:25,479 INFO L470 AbstractCegarLoop]: Abstraction has 14080 states and 19190 transitions. [2022-01-11 01:21:25,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:25,480 INFO L276 IsEmpty]: Start isEmpty. Operand 14080 states and 19190 transitions. [2022-01-11 01:21:25,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-01-11 01:21:25,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:25,486 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:25,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 01:21:25,487 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:25,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:25,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1028298530, now seen corresponding path program 1 times [2022-01-11 01:21:25,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:25,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585757164] [2022-01-11 01:21:25,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:25,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:25,544 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:25,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:25,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585757164] [2022-01-11 01:21:25,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585757164] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:25,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:25,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:25,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185179808] [2022-01-11 01:21:25,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:25,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:25,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:25,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:25,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:25,545 INFO L87 Difference]: Start difference. First operand 14080 states and 19190 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:27,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:27,058 INFO L93 Difference]: Finished difference Result 37588 states and 49167 transitions. [2022-01-11 01:21:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:27,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2022-01-11 01:21:27,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:27,091 INFO L225 Difference]: With dead ends: 37588 [2022-01-11 01:21:27,091 INFO L226 Difference]: Without dead ends: 25681 [2022-01-11 01:21:27,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:27,105 INFO L933 BasicCegarLoop]: 6215 mSDtfsCounter, 6068 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6068 SdHoareTripleChecker+Valid, 8262 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:27,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6068 Valid, 8262 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:27,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25681 states. [2022-01-11 01:21:28,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25681 to 25003. [2022-01-11 01:21:28,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25003 states, 25001 states have (on average 1.3221871125154994) internal successors, (33056), 25002 states have internal predecessors, (33056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:28,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25003 states to 25003 states and 33056 transitions. [2022-01-11 01:21:28,675 INFO L78 Accepts]: Start accepts. Automaton has 25003 states and 33056 transitions. Word has length 268 [2022-01-11 01:21:28,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:28,675 INFO L470 AbstractCegarLoop]: Abstraction has 25003 states and 33056 transitions. [2022-01-11 01:21:28,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:28,675 INFO L276 IsEmpty]: Start isEmpty. Operand 25003 states and 33056 transitions. [2022-01-11 01:21:28,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-01-11 01:21:28,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:28,687 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:28,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-11 01:21:28,687 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:28,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:28,688 INFO L85 PathProgramCache]: Analyzing trace with hash 866680546, now seen corresponding path program 1 times [2022-01-11 01:21:28,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:28,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286220175] [2022-01-11 01:21:28,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:28,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:28,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:28,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286220175] [2022-01-11 01:21:28,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286220175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:28,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:28,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:21:28,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017174128] [2022-01-11 01:21:28,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:28,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:21:28,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:28,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:21:28,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:21:28,757 INFO L87 Difference]: Start difference. First operand 25003 states and 33056 transitions. Second operand has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:31,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:31,735 INFO L93 Difference]: Finished difference Result 66783 states and 86497 transitions. [2022-01-11 01:21:31,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:21:31,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2022-01-11 01:21:31,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:31,794 INFO L225 Difference]: With dead ends: 66783 [2022-01-11 01:21:31,794 INFO L226 Difference]: Without dead ends: 44019 [2022-01-11 01:21:31,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:21:31,817 INFO L933 BasicCegarLoop]: 6193 mSDtfsCounter, 4958 mSDsluCounter, 16927 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4958 SdHoareTripleChecker+Valid, 23120 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:31,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4958 Valid, 23120 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 01:21:31,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44019 states. [2022-01-11 01:21:33,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44019 to 25051. [2022-01-11 01:21:33,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25051 states, 25049 states have (on average 1.3138648249431115) internal successors, (32911), 25050 states have internal predecessors, (32911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25051 states to 25051 states and 32911 transitions. [2022-01-11 01:21:33,790 INFO L78 Accepts]: Start accepts. Automaton has 25051 states and 32911 transitions. Word has length 268 [2022-01-11 01:21:33,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:33,790 INFO L470 AbstractCegarLoop]: Abstraction has 25051 states and 32911 transitions. [2022-01-11 01:21:33,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:33,791 INFO L276 IsEmpty]: Start isEmpty. Operand 25051 states and 32911 transitions. [2022-01-11 01:21:33,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-01-11 01:21:33,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:33,800 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:33,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-11 01:21:33,801 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:33,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:33,801 INFO L85 PathProgramCache]: Analyzing trace with hash -916837536, now seen corresponding path program 1 times [2022-01-11 01:21:33,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:33,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421457371] [2022-01-11 01:21:33,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:33,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:33,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:33,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421457371] [2022-01-11 01:21:33,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421457371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:33,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:33,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:33,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392322886] [2022-01-11 01:21:33,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:33,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:33,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:33,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:33,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:33,864 INFO L87 Difference]: Start difference. First operand 25051 states and 32911 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:37,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:37,267 INFO L93 Difference]: Finished difference Result 69409 states and 88541 transitions. [2022-01-11 01:21:37,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:37,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 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 268 [2022-01-11 01:21:37,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:37,329 INFO L225 Difference]: With dead ends: 69409 [2022-01-11 01:21:37,329 INFO L226 Difference]: Without dead ends: 46639 [2022-01-11 01:21:37,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:37,347 INFO L933 BasicCegarLoop]: 7640 mSDtfsCounter, 5783 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5783 SdHoareTripleChecker+Valid, 9880 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:37,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5783 Valid, 9880 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:37,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46639 states. [2022-01-11 01:21:40,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46639 to 46637. [2022-01-11 01:21:40,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46637 states, 46635 states have (on average 1.2804760373110324) internal successors, (59715), 46636 states have internal predecessors, (59715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:40,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46637 states to 46637 states and 59715 transitions. [2022-01-11 01:21:40,876 INFO L78 Accepts]: Start accepts. Automaton has 46637 states and 59715 transitions. Word has length 268 [2022-01-11 01:21:40,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:40,877 INFO L470 AbstractCegarLoop]: Abstraction has 46637 states and 59715 transitions. [2022-01-11 01:21:40,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:40,877 INFO L276 IsEmpty]: Start isEmpty. Operand 46637 states and 59715 transitions. [2022-01-11 01:21:40,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-01-11 01:21:40,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:40,892 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:40,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-11 01:21:40,892 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:40,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:40,892 INFO L85 PathProgramCache]: Analyzing trace with hash -432200705, now seen corresponding path program 1 times [2022-01-11 01:21:40,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:40,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404672766] [2022-01-11 01:21:40,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:40,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:40,927 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:21:40,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:40,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404672766] [2022-01-11 01:21:40,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404672766] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:40,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:40,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:40,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790011156] [2022-01-11 01:21:40,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:40,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:40,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:40,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:40,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:40,929 INFO L87 Difference]: Start difference. First operand 46637 states and 59715 transitions. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:44,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:44,468 INFO L93 Difference]: Finished difference Result 90839 states and 115096 transitions. [2022-01-11 01:21:44,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:44,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 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 268 [2022-01-11 01:21:44,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:44,582 INFO L225 Difference]: With dead ends: 90839 [2022-01-11 01:21:44,582 INFO L226 Difference]: Without dead ends: 46483 [2022-01-11 01:21:44,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:44,611 INFO L933 BasicCegarLoop]: 6216 mSDtfsCounter, 2254 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2254 SdHoareTripleChecker+Valid, 10174 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:44,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2254 Valid, 10174 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:44,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46483 states. [2022-01-11 01:21:48,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46483 to 46483. [2022-01-11 01:21:48,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46483 states, 46481 states have (on average 1.280738366214152) internal successors, (59530), 46482 states have internal predecessors, (59530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:48,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46483 states to 46483 states and 59530 transitions. [2022-01-11 01:21:48,249 INFO L78 Accepts]: Start accepts. Automaton has 46483 states and 59530 transitions. Word has length 268 [2022-01-11 01:21:48,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:21:48,250 INFO L470 AbstractCegarLoop]: Abstraction has 46483 states and 59530 transitions. [2022-01-11 01:21:48,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:48,250 INFO L276 IsEmpty]: Start isEmpty. Operand 46483 states and 59530 transitions. [2022-01-11 01:21:48,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-01-11 01:21:48,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:21:48,265 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:21:48,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-11 01:21:48,265 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:21:48,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:21:48,265 INFO L85 PathProgramCache]: Analyzing trace with hash -502289946, now seen corresponding path program 1 times [2022-01-11 01:21:48,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:21:48,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427786043] [2022-01-11 01:21:48,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:21:48,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:21:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:21:48,323 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:21:48,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:21:48,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427786043] [2022-01-11 01:21:48,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427786043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:21:48,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:21:48,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:21:48,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684491206] [2022-01-11 01:21:48,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:21:48,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:21:48,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:21:48,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:21:48,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:48,325 INFO L87 Difference]: Start difference. First operand 46483 states and 59530 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:21:55,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:21:55,466 INFO L93 Difference]: Finished difference Result 134144 states and 168970 transitions. [2022-01-11 01:21:55,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:21:55,467 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 269 [2022-01-11 01:21:55,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:21:55,596 INFO L225 Difference]: With dead ends: 134144 [2022-01-11 01:21:55,597 INFO L226 Difference]: Without dead ends: 89942 [2022-01-11 01:21:55,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:21:55,628 INFO L933 BasicCegarLoop]: 6637 mSDtfsCounter, 6036 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6036 SdHoareTripleChecker+Valid, 8860 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:21:55,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6036 Valid, 8860 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:21:55,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89942 states.