/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label44+token_ring.10.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 13:39:16,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 13:39:16,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 13:39:16,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 13:39:16,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 13:39:16,513 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 13:39:16,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 13:39:16,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 13:39:16,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 13:39:16,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 13:39:16,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 13:39:16,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 13:39:16,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 13:39:16,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 13:39:16,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 13:39:16,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 13:39:16,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 13:39:16,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 13:39:16,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 13:39:16,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 13:39:16,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 13:39:16,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 13:39:16,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 13:39:16,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 13:39:16,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 13:39:16,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 13:39:16,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 13:39:16,552 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 13:39:16,552 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 13:39:16,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 13:39:16,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 13:39:16,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 13:39:16,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 13:39:16,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 13:39:16,555 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 13:39:16,555 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 13:39:16,556 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 13:39:16,556 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 13:39:16,556 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 13:39:16,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 13:39:16,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 13:39:16,560 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 13:39:16,578 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 13:39:16,578 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 13:39:16,579 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 13:39:16,579 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 13:39:16,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 13:39:16,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 13:39:16,580 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 13:39:16,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 13:39:16,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 13:39:16,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 13:39:16,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 13:39:16,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 13:39:16,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 13:39:16,581 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 13:39:16,581 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 13:39:16,581 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 13:39:16,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 13:39:16,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 13:39:16,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 13:39:16,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 13:39:16,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 13:39:16,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:39:16,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 13:39:16,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 13:39:16,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 13:39:16,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 13:39:16,583 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 13:39:16,583 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 13:39:16,583 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 13:39:16,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 13:39:16,583 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 13:39:16,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 13:39:16,584 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 13:39:16,584 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 13:39:16,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 13:39:16,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 13:39:16,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 13:39:16,837 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 13:39:16,839 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 13:39:16,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label44+token_ring.10.cil-2.c [2022-01-10 13:39:16,900 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5206836a4/e3039306ac1246ea982eff54e8790e2f/FLAGbd8d46bce [2022-01-10 13:39:17,783 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 13:39:17,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label44+token_ring.10.cil-2.c [2022-01-10 13:39:17,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5206836a4/e3039306ac1246ea982eff54e8790e2f/FLAGbd8d46bce [2022-01-10 13:39:17,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5206836a4/e3039306ac1246ea982eff54e8790e2f [2022-01-10 13:39:17,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 13:39:17,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 13:39:17,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 13:39:17,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 13:39:17,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 13:39:17,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:39:17" (1/1) ... [2022-01-10 13:39:17,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4152797a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:39:17, skipping insertion in model container [2022-01-10 13:39:17,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:39:17" (1/1) ... [2022-01-10 13:39:17,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 13:39:18,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 13:39:19,703 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_label44+token_ring.10.cil-2.c[377340,377353] [2022-01-10 13:39:19,729 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_label44+token_ring.10.cil-2.c[383339,383352] [2022-01-10 13:39:19,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:39:19,972 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 13:39:20,680 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_label44+token_ring.10.cil-2.c[377340,377353] [2022-01-10 13:39:20,689 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_label44+token_ring.10.cil-2.c[383339,383352] [2022-01-10 13:39:20,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 13:39:20,779 INFO L208 MainTranslator]: Completed translation [2022-01-10 13:39:20,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:39:20 WrapperNode [2022-01-10 13:39:20,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 13:39:20,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 13:39:20,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 13:39:20,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 13:39:20,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:39:20" (1/1) ... [2022-01-10 13:39:20,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:39:20" (1/1) ... [2022-01-10 13:39:21,277 INFO L137 Inliner]: procedures = 65, calls = 71, calls flagged for inlining = 66, calls inlined = 219, statements flattened = 15521 [2022-01-10 13:39:21,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 13:39:21,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 13:39:21,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 13:39:21,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 13:39:21,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:39:20" (1/1) ... [2022-01-10 13:39:21,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:39:20" (1/1) ... [2022-01-10 13:39:21,364 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:39:20" (1/1) ... [2022-01-10 13:39:21,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:39:20" (1/1) ... [2022-01-10 13:39:21,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:39:20" (1/1) ... [2022-01-10 13:39:21,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:39:20" (1/1) ... [2022-01-10 13:39:21,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:39:20" (1/1) ... [2022-01-10 13:39:21,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 13:39:21,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 13:39:21,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 13:39:21,786 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 13:39:21,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:39:20" (1/1) ... [2022-01-10 13:39:21,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 13:39:21,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 13:39:21,816 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 13:39:21,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 13:39:21,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 13:39:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 13:39:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 13:39:21,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 13:39:22,046 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 13:39:22,048 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 13:39:30,868 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 13:39:30,907 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 13:39:30,907 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-01-10 13:39:30,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:39:30 BoogieIcfgContainer [2022-01-10 13:39:30,912 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 13:39:30,913 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 13:39:30,913 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 13:39:30,914 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 13:39:30,916 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:39:30" (1/1) ... [2022-01-10 13:39:32,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:39:32 BasicIcfg [2022-01-10 13:39:32,482 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 13:39:32,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 13:39:32,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 13:39:32,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 13:39:32,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:39:17" (1/4) ... [2022-01-10 13:39:32,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15731fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:39:32, skipping insertion in model container [2022-01-10 13:39:32,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:39:20" (2/4) ... [2022-01-10 13:39:32,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15731fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:39:32, skipping insertion in model container [2022-01-10 13:39:32,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:39:30" (3/4) ... [2022-01-10 13:39:32,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15731fb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 01:39:32, skipping insertion in model container [2022-01-10 13:39:32,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 01:39:32" (4/4) ... [2022-01-10 13:39:32,491 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.10.cil-2.cTransformedIcfg [2022-01-10 13:39:32,495 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 13:39:32,495 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 13:39:32,552 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 13:39:32,560 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 13:39:32,560 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 13:39:32,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 3551 states, 3548 states have (on average 1.7311161217587374) internal successors, (6142), 3550 states have internal predecessors, (6142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:32,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:32,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:32,641 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] [2022-01-10 13:39:32,641 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:32,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:32,645 INFO L85 PathProgramCache]: Analyzing trace with hash -852740238, now seen corresponding path program 1 times [2022-01-10 13:39:32,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:32,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525949998] [2022-01-10 13:39:32,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:32,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:33,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:33,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:33,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525949998] [2022-01-10 13:39:33,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525949998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:33,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:33,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:39:33,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768991824] [2022-01-10 13:39:33,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:33,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:33,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:33,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:33,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:33,101 INFO L87 Difference]: Start difference. First operand has 3551 states, 3548 states have (on average 1.7311161217587374) internal successors, (6142), 3550 states have internal predecessors, (6142), 0 states have call successors, (0), 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 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:33,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:33,346 INFO L93 Difference]: Finished difference Result 7090 states and 12261 transitions. [2022-01-10 13:39:33,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:33,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:33,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:33,379 INFO L225 Difference]: With dead ends: 7090 [2022-01-10 13:39:33,379 INFO L226 Difference]: Without dead ends: 3484 [2022-01-10 13:39:33,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:33,396 INFO L933 BasicCegarLoop]: 6051 mSDtfsCounter, 2018 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2018 SdHoareTripleChecker+Valid, 10073 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 [2022-01-10 13:39:33,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2018 Valid, 10073 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:33,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3484 states. [2022-01-10 13:39:33,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3484 to 3484. [2022-01-10 13:39:33,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3484 states, 3482 states have (on average 1.718265364732912) internal successors, (5983), 3483 states have internal predecessors, (5983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:33,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 5983 transitions. [2022-01-10 13:39:33,555 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 5983 transitions. Word has length 143 [2022-01-10 13:39:33,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:33,556 INFO L470 AbstractCegarLoop]: Abstraction has 3484 states and 5983 transitions. [2022-01-10 13:39:33,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:33,556 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 5983 transitions. [2022-01-10 13:39:33,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:33,563 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:33,564 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] [2022-01-10 13:39:33,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 13:39:33,564 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:33,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:33,566 INFO L85 PathProgramCache]: Analyzing trace with hash 957163347, now seen corresponding path program 1 times [2022-01-10 13:39:33,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:33,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491884726] [2022-01-10 13:39:33,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:33,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:33,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:33,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:33,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491884726] [2022-01-10 13:39:33,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491884726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:33,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:33,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:33,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370800475] [2022-01-10 13:39:33,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:33,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:33,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:33,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:33,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:33,697 INFO L87 Difference]: Start difference. First operand 3484 states and 5983 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:33,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:33,823 INFO L93 Difference]: Finished difference Result 5975 states and 9666 transitions. [2022-01-10 13:39:33,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:33,823 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:33,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:33,842 INFO L225 Difference]: With dead ends: 5975 [2022-01-10 13:39:33,843 INFO L226 Difference]: Without dead ends: 4629 [2022-01-10 13:39:33,848 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 [2022-01-10 13:39:33,850 INFO L933 BasicCegarLoop]: 5977 mSDtfsCounter, 5848 mSDsluCounter, 1792 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5848 SdHoareTripleChecker+Valid, 7769 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 [2022-01-10 13:39:33,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5848 Valid, 7769 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:33,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4629 states. [2022-01-10 13:39:33,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4629 to 4627. [2022-01-10 13:39:33,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.657081081081081) internal successors, (7664), 4626 states have internal predecessors, (7664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:33,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7664 transitions. [2022-01-10 13:39:33,978 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7664 transitions. Word has length 143 [2022-01-10 13:39:33,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:33,980 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7664 transitions. [2022-01-10 13:39:33,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:33,980 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7664 transitions. [2022-01-10 13:39:33,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:33,982 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:33,982 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] [2022-01-10 13:39:33,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 13:39:33,983 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:33,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:33,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1072099955, now seen corresponding path program 1 times [2022-01-10 13:39:33,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:33,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892393332] [2022-01-10 13:39:33,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:33,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:34,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:34,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892393332] [2022-01-10 13:39:34,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892393332] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:34,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:34,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:34,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759281525] [2022-01-10 13:39:34,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:34,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:34,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:34,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:34,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:34,098 INFO L87 Difference]: Start difference. First operand 4627 states and 7664 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:34,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:34,218 INFO L93 Difference]: Finished difference Result 7115 states and 11341 transitions. [2022-01-10 13:39:34,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:34,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:34,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:34,236 INFO L225 Difference]: With dead ends: 7115 [2022-01-10 13:39:34,237 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:34,240 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 [2022-01-10 13:39:34,241 INFO L933 BasicCegarLoop]: 5971 mSDtfsCounter, 5958 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5958 SdHoareTripleChecker+Valid, 5971 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 [2022-01-10 13:39:34,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5958 Valid, 5971 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:34,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:34,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:34,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6553513513513514) internal successors, (7656), 4626 states have internal predecessors, (7656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:34,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7656 transitions. [2022-01-10 13:39:34,490 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7656 transitions. Word has length 143 [2022-01-10 13:39:34,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:34,491 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7656 transitions. [2022-01-10 13:39:34,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:34,491 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7656 transitions. [2022-01-10 13:39:34,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:34,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:34,493 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] [2022-01-10 13:39:34,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 13:39:34,493 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:34,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:34,494 INFO L85 PathProgramCache]: Analyzing trace with hash 521618259, now seen corresponding path program 1 times [2022-01-10 13:39:34,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:34,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052585023] [2022-01-10 13:39:34,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:34,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:34,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:34,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052585023] [2022-01-10 13:39:34,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052585023] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:34,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:34,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:34,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565173139] [2022-01-10 13:39:34,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:34,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:34,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:34,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:34,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:34,572 INFO L87 Difference]: Start difference. First operand 4627 states and 7656 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:34,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:34,684 INFO L93 Difference]: Finished difference Result 7114 states and 11324 transitions. [2022-01-10 13:39:34,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:34,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:34,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:34,702 INFO L225 Difference]: With dead ends: 7114 [2022-01-10 13:39:34,702 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:34,708 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 [2022-01-10 13:39:34,718 INFO L933 BasicCegarLoop]: 5966 mSDtfsCounter, 5952 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5952 SdHoareTripleChecker+Valid, 5966 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 [2022-01-10 13:39:34,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5952 Valid, 5966 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:34,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:34,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:34,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6536216216216215) internal successors, (7648), 4626 states have internal predecessors, (7648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:34,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7648 transitions. [2022-01-10 13:39:34,857 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7648 transitions. Word has length 143 [2022-01-10 13:39:34,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:34,857 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7648 transitions. [2022-01-10 13:39:34,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:34,858 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7648 transitions. [2022-01-10 13:39:34,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:34,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:34,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 13:39:34,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 13:39:34,860 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:34,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:34,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1574349197, now seen corresponding path program 1 times [2022-01-10 13:39:34,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:34,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312408833] [2022-01-10 13:39:34,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:34,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:34,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:34,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:34,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312408833] [2022-01-10 13:39:34,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312408833] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:34,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:34,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:34,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38091407] [2022-01-10 13:39:34,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:34,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:34,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:34,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:34,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:34,938 INFO L87 Difference]: Start difference. First operand 4627 states and 7648 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:35,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:35,058 INFO L93 Difference]: Finished difference Result 7113 states and 11307 transitions. [2022-01-10 13:39:35,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:35,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:35,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:35,089 INFO L225 Difference]: With dead ends: 7113 [2022-01-10 13:39:35,089 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:35,094 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 [2022-01-10 13:39:35,097 INFO L933 BasicCegarLoop]: 5961 mSDtfsCounter, 5946 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5946 SdHoareTripleChecker+Valid, 5961 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 [2022-01-10 13:39:35,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5946 Valid, 5961 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:35,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:35,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:35,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.651891891891892) internal successors, (7640), 4626 states have internal predecessors, (7640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7640 transitions. [2022-01-10 13:39:35,217 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7640 transitions. Word has length 143 [2022-01-10 13:39:35,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:35,219 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7640 transitions. [2022-01-10 13:39:35,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:35,225 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7640 transitions. [2022-01-10 13:39:35,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:35,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:35,227 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] [2022-01-10 13:39:35,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 13:39:35,228 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:35,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:35,228 INFO L85 PathProgramCache]: Analyzing trace with hash -117940397, now seen corresponding path program 1 times [2022-01-10 13:39:35,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:35,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702549072] [2022-01-10 13:39:35,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:35,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:35,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:35,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:35,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702549072] [2022-01-10 13:39:35,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702549072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:35,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:35,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:35,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764165591] [2022-01-10 13:39:35,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:35,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:35,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:35,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:35,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:35,284 INFO L87 Difference]: Start difference. First operand 4627 states and 7640 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:35,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:35,403 INFO L93 Difference]: Finished difference Result 7112 states and 11290 transitions. [2022-01-10 13:39:35,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:35,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:35,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:35,432 INFO L225 Difference]: With dead ends: 7112 [2022-01-10 13:39:35,432 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:35,438 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 [2022-01-10 13:39:35,440 INFO L933 BasicCegarLoop]: 5956 mSDtfsCounter, 5940 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5940 SdHoareTripleChecker+Valid, 5956 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 [2022-01-10 13:39:35,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5940 Valid, 5956 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:35,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:35,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6501621621621623) internal successors, (7632), 4626 states have internal predecessors, (7632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7632 transitions. [2022-01-10 13:39:35,772 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7632 transitions. Word has length 143 [2022-01-10 13:39:35,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:35,773 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7632 transitions. [2022-01-10 13:39:35,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:35,773 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7632 transitions. [2022-01-10 13:39:35,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:35,775 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:35,775 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] [2022-01-10 13:39:35,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 13:39:35,775 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:35,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:35,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1179338125, now seen corresponding path program 1 times [2022-01-10 13:39:35,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:35,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214125779] [2022-01-10 13:39:35,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:35,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:35,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:35,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214125779] [2022-01-10 13:39:35,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214125779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:35,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:35,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:35,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110593649] [2022-01-10 13:39:35,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:35,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:35,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:35,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:35,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:35,841 INFO L87 Difference]: Start difference. First operand 4627 states and 7632 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:35,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:35,983 INFO L93 Difference]: Finished difference Result 7111 states and 11273 transitions. [2022-01-10 13:39:35,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:35,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:35,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:35,993 INFO L225 Difference]: With dead ends: 7111 [2022-01-10 13:39:35,993 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:35,999 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 [2022-01-10 13:39:36,000 INFO L933 BasicCegarLoop]: 5951 mSDtfsCounter, 5934 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5934 SdHoareTripleChecker+Valid, 5951 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 [2022-01-10 13:39:36,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5934 Valid, 5951 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:36,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:36,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:36,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6484324324324324) internal successors, (7624), 4626 states have internal predecessors, (7624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:36,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7624 transitions. [2022-01-10 13:39:36,153 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7624 transitions. Word has length 143 [2022-01-10 13:39:36,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:36,154 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7624 transitions. [2022-01-10 13:39:36,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:36,155 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7624 transitions. [2022-01-10 13:39:36,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:36,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:36,157 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] [2022-01-10 13:39:36,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 13:39:36,157 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:36,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:36,158 INFO L85 PathProgramCache]: Analyzing trace with hash -797934765, now seen corresponding path program 1 times [2022-01-10 13:39:36,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:36,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090439560] [2022-01-10 13:39:36,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:36,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:36,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:36,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:36,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090439560] [2022-01-10 13:39:36,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090439560] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:36,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:36,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:36,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613121138] [2022-01-10 13:39:36,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:36,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:36,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:36,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:36,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:36,244 INFO L87 Difference]: Start difference. First operand 4627 states and 7624 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:36,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:36,385 INFO L93 Difference]: Finished difference Result 7110 states and 11256 transitions. [2022-01-10 13:39:36,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:36,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:36,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:36,397 INFO L225 Difference]: With dead ends: 7110 [2022-01-10 13:39:36,397 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:36,404 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 [2022-01-10 13:39:36,405 INFO L933 BasicCegarLoop]: 5946 mSDtfsCounter, 5928 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5928 SdHoareTripleChecker+Valid, 5946 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 [2022-01-10 13:39:36,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5928 Valid, 5946 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:36,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:36,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:36,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6467027027027028) internal successors, (7616), 4626 states have internal predecessors, (7616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:36,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7616 transitions. [2022-01-10 13:39:36,566 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7616 transitions. Word has length 143 [2022-01-10 13:39:36,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:36,567 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7616 transitions. [2022-01-10 13:39:36,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:36,568 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7616 transitions. [2022-01-10 13:39:36,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:36,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:36,569 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] [2022-01-10 13:39:36,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 13:39:36,570 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:36,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:36,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1154031219, now seen corresponding path program 1 times [2022-01-10 13:39:36,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:36,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325677393] [2022-01-10 13:39:36,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:36,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:36,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:36,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:36,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325677393] [2022-01-10 13:39:36,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325677393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:36,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:36,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:36,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486684056] [2022-01-10 13:39:36,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:36,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:36,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:36,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:36,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:36,623 INFO L87 Difference]: Start difference. First operand 4627 states and 7616 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:36,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:36,771 INFO L93 Difference]: Finished difference Result 7109 states and 11239 transitions. [2022-01-10 13:39:36,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:36,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:36,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:36,781 INFO L225 Difference]: With dead ends: 7109 [2022-01-10 13:39:36,781 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:36,787 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 [2022-01-10 13:39:36,789 INFO L933 BasicCegarLoop]: 5941 mSDtfsCounter, 5922 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5922 SdHoareTripleChecker+Valid, 5941 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 [2022-01-10 13:39:36,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5922 Valid, 5941 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:36,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:36,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:36,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.644972972972973) internal successors, (7608), 4626 states have internal predecessors, (7608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:36,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7608 transitions. [2022-01-10 13:39:36,946 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7608 transitions. Word has length 143 [2022-01-10 13:39:36,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:36,946 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7608 transitions. [2022-01-10 13:39:36,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:36,949 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7608 transitions. [2022-01-10 13:39:36,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:36,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:36,951 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] [2022-01-10 13:39:36,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 13:39:36,951 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:36,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:36,952 INFO L85 PathProgramCache]: Analyzing trace with hash 524261203, now seen corresponding path program 1 times [2022-01-10 13:39:36,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:36,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596496461] [2022-01-10 13:39:36,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:36,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:37,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:37,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:37,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596496461] [2022-01-10 13:39:37,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596496461] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:37,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:37,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:37,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570955734] [2022-01-10 13:39:37,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:37,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:37,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:37,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:37,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:37,005 INFO L87 Difference]: Start difference. First operand 4627 states and 7608 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:37,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:37,192 INFO L93 Difference]: Finished difference Result 7108 states and 11222 transitions. [2022-01-10 13:39:37,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:37,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:37,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:37,204 INFO L225 Difference]: With dead ends: 7108 [2022-01-10 13:39:37,204 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:37,211 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 [2022-01-10 13:39:37,211 INFO L933 BasicCegarLoop]: 5936 mSDtfsCounter, 5916 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5916 SdHoareTripleChecker+Valid, 5936 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 [2022-01-10 13:39:37,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5916 Valid, 5936 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:37,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:37,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:37,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6432432432432433) internal successors, (7600), 4626 states have internal predecessors, (7600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:37,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7600 transitions. [2022-01-10 13:39:37,382 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7600 transitions. Word has length 143 [2022-01-10 13:39:37,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:37,382 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7600 transitions. [2022-01-10 13:39:37,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:37,383 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7600 transitions. [2022-01-10 13:39:37,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:37,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:37,385 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] [2022-01-10 13:39:37,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 13:39:37,385 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:37,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:37,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1851358605, now seen corresponding path program 1 times [2022-01-10 13:39:37,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:37,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968507507] [2022-01-10 13:39:37,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:37,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:37,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:37,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968507507] [2022-01-10 13:39:37,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968507507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:37,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:37,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:37,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673453879] [2022-01-10 13:39:37,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:37,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:37,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:37,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:37,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:37,437 INFO L87 Difference]: Start difference. First operand 4627 states and 7600 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:37,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:37,602 INFO L93 Difference]: Finished difference Result 7107 states and 11205 transitions. [2022-01-10 13:39:37,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:37,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:37,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:37,614 INFO L225 Difference]: With dead ends: 7107 [2022-01-10 13:39:37,614 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:37,620 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 [2022-01-10 13:39:37,620 INFO L933 BasicCegarLoop]: 5931 mSDtfsCounter, 5910 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5910 SdHoareTripleChecker+Valid, 5931 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 [2022-01-10 13:39:37,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5910 Valid, 5931 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:37,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:37,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:37,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6415135135135135) internal successors, (7592), 4626 states have internal predecessors, (7592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:37,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7592 transitions. [2022-01-10 13:39:37,792 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7592 transitions. Word has length 143 [2022-01-10 13:39:37,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:37,793 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7592 transitions. [2022-01-10 13:39:37,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:37,793 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7592 transitions. [2022-01-10 13:39:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:37,794 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:37,795 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] [2022-01-10 13:39:37,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 13:39:37,795 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:37,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:37,796 INFO L85 PathProgramCache]: Analyzing trace with hash -819612845, now seen corresponding path program 1 times [2022-01-10 13:39:37,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:37,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792418359] [2022-01-10 13:39:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:37,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:37,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:37,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792418359] [2022-01-10 13:39:37,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792418359] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:37,853 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:37,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:37,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77204757] [2022-01-10 13:39:37,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:37,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:37,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:37,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:37,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:37,855 INFO L87 Difference]: Start difference. First operand 4627 states and 7592 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:38,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:38,016 INFO L93 Difference]: Finished difference Result 7106 states and 11188 transitions. [2022-01-10 13:39:38,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:38,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:38,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:38,026 INFO L225 Difference]: With dead ends: 7106 [2022-01-10 13:39:38,026 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:38,031 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 [2022-01-10 13:39:38,032 INFO L933 BasicCegarLoop]: 5926 mSDtfsCounter, 5904 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5904 SdHoareTripleChecker+Valid, 5926 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 [2022-01-10 13:39:38,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5904 Valid, 5926 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:38,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:38,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:38,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6397837837837839) internal successors, (7584), 4626 states have internal predecessors, (7584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:38,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7584 transitions. [2022-01-10 13:39:38,168 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7584 transitions. Word has length 143 [2022-01-10 13:39:38,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:38,169 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7584 transitions. [2022-01-10 13:39:38,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:38,170 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7584 transitions. [2022-01-10 13:39:38,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:38,171 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:38,172 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] [2022-01-10 13:39:38,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 13:39:38,172 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:38,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:38,172 INFO L85 PathProgramCache]: Analyzing trace with hash 2123163251, now seen corresponding path program 1 times [2022-01-10 13:39:38,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:38,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134867252] [2022-01-10 13:39:38,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:38,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:38,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:38,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:38,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134867252] [2022-01-10 13:39:38,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134867252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:38,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:38,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:38,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922356361] [2022-01-10 13:39:38,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:38,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:38,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:38,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:38,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:38,218 INFO L87 Difference]: Start difference. First operand 4627 states and 7584 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:38,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:38,426 INFO L93 Difference]: Finished difference Result 7105 states and 11171 transitions. [2022-01-10 13:39:38,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:38,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:38,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:38,435 INFO L225 Difference]: With dead ends: 7105 [2022-01-10 13:39:38,435 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:38,438 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 [2022-01-10 13:39:38,439 INFO L933 BasicCegarLoop]: 5895 mSDtfsCounter, 5773 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5773 SdHoareTripleChecker+Valid, 6003 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:39:38,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5773 Valid, 6003 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:38,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:38,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:38,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.632864864864865) internal successors, (7552), 4626 states have internal predecessors, (7552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:38,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7552 transitions. [2022-01-10 13:39:38,574 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7552 transitions. Word has length 143 [2022-01-10 13:39:38,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:38,574 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7552 transitions. [2022-01-10 13:39:38,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:38,574 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7552 transitions. [2022-01-10 13:39:38,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:38,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:38,576 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] [2022-01-10 13:39:38,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 13:39:38,576 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:38,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:38,577 INFO L85 PathProgramCache]: Analyzing trace with hash 235243474, now seen corresponding path program 1 times [2022-01-10 13:39:38,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:38,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864991765] [2022-01-10 13:39:38,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:38,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:38,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:38,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:38,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864991765] [2022-01-10 13:39:38,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864991765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:38,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:38,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:38,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327935605] [2022-01-10 13:39:38,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:38,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:38,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:38,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:38,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:38,621 INFO L87 Difference]: Start difference. First operand 4627 states and 7552 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:38,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:38,781 INFO L93 Difference]: Finished difference Result 7104 states and 11106 transitions. [2022-01-10 13:39:38,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:38,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:38,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:38,791 INFO L225 Difference]: With dead ends: 7104 [2022-01-10 13:39:38,791 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:38,797 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 [2022-01-10 13:39:38,798 INFO L933 BasicCegarLoop]: 5877 mSDtfsCounter, 5755 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5755 SdHoareTripleChecker+Valid, 5984 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:39:38,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5755 Valid, 5984 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:38,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:38,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:38,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.625945945945946) internal successors, (7520), 4626 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:38,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7520 transitions. [2022-01-10 13:39:38,956 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7520 transitions. Word has length 143 [2022-01-10 13:39:38,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:38,956 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7520 transitions. [2022-01-10 13:39:38,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:38,957 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7520 transitions. [2022-01-10 13:39:38,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:38,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:38,958 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] [2022-01-10 13:39:38,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 13:39:38,959 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:38,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:38,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1050265265, now seen corresponding path program 1 times [2022-01-10 13:39:38,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:38,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390373377] [2022-01-10 13:39:38,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:38,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:38,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:39,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:39,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390373377] [2022-01-10 13:39:39,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390373377] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:39,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:39,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:39,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806148463] [2022-01-10 13:39:39,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:39,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:39,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:39,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:39,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:39,011 INFO L87 Difference]: Start difference. First operand 4627 states and 7520 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:39,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:39,175 INFO L93 Difference]: Finished difference Result 7103 states and 11041 transitions. [2022-01-10 13:39:39,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:39,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:39,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:39,185 INFO L225 Difference]: With dead ends: 7103 [2022-01-10 13:39:39,185 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:39,191 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 [2022-01-10 13:39:39,192 INFO L933 BasicCegarLoop]: 5859 mSDtfsCounter, 5737 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5737 SdHoareTripleChecker+Valid, 5965 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:39:39,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5737 Valid, 5965 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:39,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:39,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:39,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.619027027027027) internal successors, (7488), 4626 states have internal predecessors, (7488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:39,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7488 transitions. [2022-01-10 13:39:39,340 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7488 transitions. Word has length 143 [2022-01-10 13:39:39,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:39,340 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7488 transitions. [2022-01-10 13:39:39,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:39,340 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7488 transitions. [2022-01-10 13:39:39,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:39,342 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:39,342 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] [2022-01-10 13:39:39,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 13:39:39,342 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:39,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:39,343 INFO L85 PathProgramCache]: Analyzing trace with hash 606119568, now seen corresponding path program 1 times [2022-01-10 13:39:39,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:39,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921476984] [2022-01-10 13:39:39,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:39,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:39,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:39,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921476984] [2022-01-10 13:39:39,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921476984] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:39,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:39,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:39,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296072025] [2022-01-10 13:39:39,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:39,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:39,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:39,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:39,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:39,396 INFO L87 Difference]: Start difference. First operand 4627 states and 7488 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:39,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:39,574 INFO L93 Difference]: Finished difference Result 7101 states and 10974 transitions. [2022-01-10 13:39:39,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:39,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:39,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:39,584 INFO L225 Difference]: With dead ends: 7101 [2022-01-10 13:39:39,584 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:39,589 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 [2022-01-10 13:39:39,590 INFO L933 BasicCegarLoop]: 5841 mSDtfsCounter, 5718 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5718 SdHoareTripleChecker+Valid, 5946 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:39:39,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5718 Valid, 5946 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:39,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:39,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:39,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6121081081081081) internal successors, (7456), 4626 states have internal predecessors, (7456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:39,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7456 transitions. [2022-01-10 13:39:39,743 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7456 transitions. Word has length 143 [2022-01-10 13:39:39,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:39,743 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7456 transitions. [2022-01-10 13:39:39,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:39,743 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7456 transitions. [2022-01-10 13:39:39,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:39,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:39,745 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] [2022-01-10 13:39:39,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 13:39:39,745 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:39,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:39,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1296464657, now seen corresponding path program 1 times [2022-01-10 13:39:39,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:39,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336482061] [2022-01-10 13:39:39,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:39,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:39,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:39,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:39,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336482061] [2022-01-10 13:39:39,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336482061] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:39,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:39,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:39,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76775454] [2022-01-10 13:39:39,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:39,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:39,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:39,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:39,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:39,793 INFO L87 Difference]: Start difference. First operand 4627 states and 7456 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:39,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:39,958 INFO L93 Difference]: Finished difference Result 7100 states and 10909 transitions. [2022-01-10 13:39:39,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:39,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:39,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:39,968 INFO L225 Difference]: With dead ends: 7100 [2022-01-10 13:39:39,968 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:39,972 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 [2022-01-10 13:39:39,973 INFO L933 BasicCegarLoop]: 5823 mSDtfsCounter, 5700 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5700 SdHoareTripleChecker+Valid, 5927 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:39:39,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5700 Valid, 5927 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:39,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:40,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:40,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.6051891891891892) internal successors, (7424), 4626 states have internal predecessors, (7424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:40,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7424 transitions. [2022-01-10 13:39:40,134 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7424 transitions. Word has length 143 [2022-01-10 13:39:40,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:40,135 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7424 transitions. [2022-01-10 13:39:40,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:40,135 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7424 transitions. [2022-01-10 13:39:40,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:40,137 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:40,137 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] [2022-01-10 13:39:40,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 13:39:40,137 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:40,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:40,138 INFO L85 PathProgramCache]: Analyzing trace with hash -3305457, now seen corresponding path program 1 times [2022-01-10 13:39:40,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:40,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934769119] [2022-01-10 13:39:40,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:40,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:40,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:40,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:40,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934769119] [2022-01-10 13:39:40,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934769119] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:40,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:40,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:40,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960954478] [2022-01-10 13:39:40,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:40,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:40,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:40,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:40,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:40,188 INFO L87 Difference]: Start difference. First operand 4627 states and 7424 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:40,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:40,357 INFO L93 Difference]: Finished difference Result 7099 states and 10844 transitions. [2022-01-10 13:39:40,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:40,357 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:40,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:40,367 INFO L225 Difference]: With dead ends: 7099 [2022-01-10 13:39:40,367 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:40,371 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 [2022-01-10 13:39:40,372 INFO L933 BasicCegarLoop]: 5805 mSDtfsCounter, 5682 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5682 SdHoareTripleChecker+Valid, 5908 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:39:40,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5682 Valid, 5908 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:40,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:40,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:40,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.5982702702702702) internal successors, (7392), 4626 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:40,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7392 transitions. [2022-01-10 13:39:40,590 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7392 transitions. Word has length 143 [2022-01-10 13:39:40,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:40,590 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7392 transitions. [2022-01-10 13:39:40,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:40,590 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7392 transitions. [2022-01-10 13:39:40,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:40,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:40,592 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] [2022-01-10 13:39:40,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 13:39:40,592 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:40,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:40,593 INFO L85 PathProgramCache]: Analyzing trace with hash 2023501038, now seen corresponding path program 1 times [2022-01-10 13:39:40,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:40,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028410117] [2022-01-10 13:39:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:40,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:40,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:40,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:40,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028410117] [2022-01-10 13:39:40,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028410117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:40,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:40,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:40,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670681992] [2022-01-10 13:39:40,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:40,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:40,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:40,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:40,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:40,639 INFO L87 Difference]: Start difference. First operand 4627 states and 7392 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:40,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:40,811 INFO L93 Difference]: Finished difference Result 7098 states and 10779 transitions. [2022-01-10 13:39:40,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:40,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:40,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:40,820 INFO L225 Difference]: With dead ends: 7098 [2022-01-10 13:39:40,820 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:40,824 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 [2022-01-10 13:39:40,825 INFO L933 BasicCegarLoop]: 5787 mSDtfsCounter, 5664 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5664 SdHoareTripleChecker+Valid, 5889 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:39:40,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5664 Valid, 5889 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:40,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:40,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:40,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.5913513513513513) internal successors, (7360), 4626 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:40,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7360 transitions. [2022-01-10 13:39:40,985 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7360 transitions. Word has length 143 [2022-01-10 13:39:40,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:40,986 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7360 transitions. [2022-01-10 13:39:40,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:40,986 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7360 transitions. [2022-01-10 13:39:40,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:40,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:40,988 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] [2022-01-10 13:39:40,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 13:39:40,988 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:40,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:40,988 INFO L85 PathProgramCache]: Analyzing trace with hash -772425907, now seen corresponding path program 1 times [2022-01-10 13:39:40,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:40,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190326588] [2022-01-10 13:39:40,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:40,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:41,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:41,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:41,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190326588] [2022-01-10 13:39:41,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190326588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:41,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:41,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:41,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807634050] [2022-01-10 13:39:41,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:41,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:41,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:41,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:41,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:41,034 INFO L87 Difference]: Start difference. First operand 4627 states and 7360 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:41,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:41,213 INFO L93 Difference]: Finished difference Result 7097 states and 10714 transitions. [2022-01-10 13:39:41,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:41,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:41,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:41,221 INFO L225 Difference]: With dead ends: 7097 [2022-01-10 13:39:41,221 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:41,225 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 [2022-01-10 13:39:41,226 INFO L933 BasicCegarLoop]: 5769 mSDtfsCounter, 5646 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5646 SdHoareTripleChecker+Valid, 5870 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:39:41,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5646 Valid, 5870 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:41,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:41,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:41,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.5844324324324324) internal successors, (7328), 4626 states have internal predecessors, (7328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:41,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7328 transitions. [2022-01-10 13:39:41,401 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7328 transitions. Word has length 143 [2022-01-10 13:39:41,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:41,401 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7328 transitions. [2022-01-10 13:39:41,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:41,401 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7328 transitions. [2022-01-10 13:39:41,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:41,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:41,402 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] [2022-01-10 13:39:41,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 13:39:41,402 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:41,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:41,403 INFO L85 PathProgramCache]: Analyzing trace with hash 876466860, now seen corresponding path program 1 times [2022-01-10 13:39:41,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:41,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264363885] [2022-01-10 13:39:41,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:41,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:41,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:41,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:41,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264363885] [2022-01-10 13:39:41,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264363885] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:41,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:41,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:41,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363382323] [2022-01-10 13:39:41,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:41,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:41,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:41,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:41,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:41,477 INFO L87 Difference]: Start difference. First operand 4627 states and 7328 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:41,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:41,657 INFO L93 Difference]: Finished difference Result 7096 states and 10649 transitions. [2022-01-10 13:39:41,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:41,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:41,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:41,665 INFO L225 Difference]: With dead ends: 7096 [2022-01-10 13:39:41,665 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:41,670 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 [2022-01-10 13:39:41,671 INFO L933 BasicCegarLoop]: 5751 mSDtfsCounter, 5628 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5628 SdHoareTripleChecker+Valid, 5851 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:39:41,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5628 Valid, 5851 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:41,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:41,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:41,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.5775135135135134) internal successors, (7296), 4626 states have internal predecessors, (7296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:41,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7296 transitions. [2022-01-10 13:39:41,842 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7296 transitions. Word has length 143 [2022-01-10 13:39:41,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:41,842 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7296 transitions. [2022-01-10 13:39:41,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:41,843 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7296 transitions. [2022-01-10 13:39:41,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:41,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:41,844 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] [2022-01-10 13:39:41,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 13:39:41,845 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:41,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:41,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1702054795, now seen corresponding path program 1 times [2022-01-10 13:39:41,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:41,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519586073] [2022-01-10 13:39:41,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:41,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:41,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:41,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:41,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519586073] [2022-01-10 13:39:41,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519586073] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:41,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:41,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:41,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223248304] [2022-01-10 13:39:41,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:41,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:41,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:41,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:41,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:41,892 INFO L87 Difference]: Start difference. First operand 4627 states and 7296 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:42,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:42,078 INFO L93 Difference]: Finished difference Result 7095 states and 10584 transitions. [2022-01-10 13:39:42,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:42,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:42,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:42,086 INFO L225 Difference]: With dead ends: 7095 [2022-01-10 13:39:42,086 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 13:39:42,091 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 [2022-01-10 13:39:42,092 INFO L933 BasicCegarLoop]: 5733 mSDtfsCounter, 5610 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5610 SdHoareTripleChecker+Valid, 5832 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:39:42,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5610 Valid, 5832 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:42,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 13:39:42,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2022-01-10 13:39:42,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 4625 states have (on average 1.5705945945945945) internal successors, (7264), 4626 states have internal predecessors, (7264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:42,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 7264 transitions. [2022-01-10 13:39:42,243 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 7264 transitions. Word has length 143 [2022-01-10 13:39:42,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:42,243 INFO L470 AbstractCegarLoop]: Abstraction has 4627 states and 7264 transitions. [2022-01-10 13:39:42,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:42,243 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 7264 transitions. [2022-01-10 13:39:42,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:42,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:42,245 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] [2022-01-10 13:39:42,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 13:39:42,245 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:42,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:42,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1050191210, now seen corresponding path program 1 times [2022-01-10 13:39:42,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:42,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143014214] [2022-01-10 13:39:42,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:42,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:42,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:42,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:42,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143014214] [2022-01-10 13:39:42,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143014214] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:42,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:42,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:39:42,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801529214] [2022-01-10 13:39:42,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:42,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:39:42,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:42,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:39:42,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:39:42,345 INFO L87 Difference]: Start difference. First operand 4627 states and 7264 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:42,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:42,814 INFO L93 Difference]: Finished difference Result 8035 states and 11817 transitions. [2022-01-10 13:39:42,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:39:42,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:42,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:42,825 INFO L225 Difference]: With dead ends: 8035 [2022-01-10 13:39:42,825 INFO L226 Difference]: Without dead ends: 5581 [2022-01-10 13:39:42,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:39:42,831 INFO L933 BasicCegarLoop]: 5869 mSDtfsCounter, 4965 mSDsluCounter, 13875 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 19744 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:39:42,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4965 Valid, 19744 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:39:42,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5581 states. [2022-01-10 13:39:43,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5581 to 4633. [2022-01-10 13:39:43,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4633 states, 4631 states have (on average 1.564672856834377) internal successors, (7246), 4632 states have internal predecessors, (7246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:43,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4633 states to 4633 states and 7246 transitions. [2022-01-10 13:39:43,059 INFO L78 Accepts]: Start accepts. Automaton has 4633 states and 7246 transitions. Word has length 143 [2022-01-10 13:39:43,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:43,059 INFO L470 AbstractCegarLoop]: Abstraction has 4633 states and 7246 transitions. [2022-01-10 13:39:43,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:43,059 INFO L276 IsEmpty]: Start isEmpty. Operand 4633 states and 7246 transitions. [2022-01-10 13:39:43,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:43,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:43,061 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] [2022-01-10 13:39:43,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 13:39:43,061 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:43,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:43,062 INFO L85 PathProgramCache]: Analyzing trace with hash 608436715, now seen corresponding path program 1 times [2022-01-10 13:39:43,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:43,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356872191] [2022-01-10 13:39:43,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:43,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:43,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:43,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:43,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356872191] [2022-01-10 13:39:43,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356872191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:43,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:43,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:43,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959296797] [2022-01-10 13:39:43,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:43,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:43,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:43,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:43,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:43,107 INFO L87 Difference]: Start difference. First operand 4633 states and 7246 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:43,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:43,496 INFO L93 Difference]: Finished difference Result 9271 states and 13313 transitions. [2022-01-10 13:39:43,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:43,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:43,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:43,507 INFO L225 Difference]: With dead ends: 9271 [2022-01-10 13:39:43,507 INFO L226 Difference]: Without dead ends: 6820 [2022-01-10 13:39:43,513 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 [2022-01-10 13:39:43,514 INFO L933 BasicCegarLoop]: 5721 mSDtfsCounter, 5534 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5534 SdHoareTripleChecker+Valid, 7297 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:39:43,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5534 Valid, 7297 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:43,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6820 states. [2022-01-10 13:39:43,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6820 to 6814. [2022-01-10 13:39:43,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6814 states, 6812 states have (on average 1.4785672342924252) internal successors, (10072), 6813 states have internal predecessors, (10072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:43,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6814 states to 6814 states and 10072 transitions. [2022-01-10 13:39:43,860 INFO L78 Accepts]: Start accepts. Automaton has 6814 states and 10072 transitions. Word has length 143 [2022-01-10 13:39:43,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:43,860 INFO L470 AbstractCegarLoop]: Abstraction has 6814 states and 10072 transitions. [2022-01-10 13:39:43,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:43,860 INFO L276 IsEmpty]: Start isEmpty. Operand 6814 states and 10072 transitions. [2022-01-10 13:39:43,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:43,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:43,861 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] [2022-01-10 13:39:43,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 13:39:43,862 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:43,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:43,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1815030826, now seen corresponding path program 1 times [2022-01-10 13:39:43,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:43,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280078613] [2022-01-10 13:39:43,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:43,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:43,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:43,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280078613] [2022-01-10 13:39:43,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280078613] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:43,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:43,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:39:43,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903435972] [2022-01-10 13:39:43,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:43,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:39:43,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:43,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:39:43,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:39:43,925 INFO L87 Difference]: Start difference. First operand 6814 states and 10072 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:44,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:44,561 INFO L93 Difference]: Finished difference Result 14603 states and 20315 transitions. [2022-01-10 13:39:44,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:39:44,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:44,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:44,574 INFO L225 Difference]: With dead ends: 14603 [2022-01-10 13:39:44,575 INFO L226 Difference]: Without dead ends: 9996 [2022-01-10 13:39:44,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:39:44,582 INFO L933 BasicCegarLoop]: 5759 mSDtfsCounter, 4201 mSDsluCounter, 15446 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4201 SdHoareTripleChecker+Valid, 21205 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:39:44,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4201 Valid, 21205 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:39:44,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9996 states. [2022-01-10 13:39:45,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9996 to 6826. [2022-01-10 13:39:45,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6826 states, 6824 states have (on average 1.4711313012895662) internal successors, (10039), 6825 states have internal predecessors, (10039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:45,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 10039 transitions. [2022-01-10 13:39:45,059 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 10039 transitions. Word has length 143 [2022-01-10 13:39:45,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:45,059 INFO L470 AbstractCegarLoop]: Abstraction has 6826 states and 10039 transitions. [2022-01-10 13:39:45,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:45,060 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 10039 transitions. [2022-01-10 13:39:45,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:45,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:45,061 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] [2022-01-10 13:39:45,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 13:39:45,061 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:45,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:45,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1606332523, now seen corresponding path program 1 times [2022-01-10 13:39:45,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:45,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073490780] [2022-01-10 13:39:45,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:45,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:45,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:45,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073490780] [2022-01-10 13:39:45,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073490780] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:45,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:45,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:39:45,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535963822] [2022-01-10 13:39:45,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:45,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:39:45,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:45,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:39:45,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:39:45,123 INFO L87 Difference]: Start difference. First operand 6826 states and 10039 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:45,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:45,795 INFO L93 Difference]: Finished difference Result 14898 states and 20557 transitions. [2022-01-10 13:39:45,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:39:45,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:45,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:45,807 INFO L225 Difference]: With dead ends: 14898 [2022-01-10 13:39:45,807 INFO L226 Difference]: Without dead ends: 10286 [2022-01-10 13:39:45,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 13:39:45,812 INFO L933 BasicCegarLoop]: 5728 mSDtfsCounter, 4032 mSDsluCounter, 15727 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4032 SdHoareTripleChecker+Valid, 21455 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:39:45,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4032 Valid, 21455 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:39:45,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10286 states. [2022-01-10 13:39:46,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10286 to 6838. [2022-01-10 13:39:46,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6838 states, 6836 states have (on average 1.4637214745465184) internal successors, (10006), 6837 states have internal predecessors, (10006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:46,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6838 states to 6838 states and 10006 transitions. [2022-01-10 13:39:46,309 INFO L78 Accepts]: Start accepts. Automaton has 6838 states and 10006 transitions. Word has length 143 [2022-01-10 13:39:46,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:46,310 INFO L470 AbstractCegarLoop]: Abstraction has 6838 states and 10006 transitions. [2022-01-10 13:39:46,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:46,310 INFO L276 IsEmpty]: Start isEmpty. Operand 6838 states and 10006 transitions. [2022-01-10 13:39:46,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:46,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:46,311 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] [2022-01-10 13:39:46,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 13:39:46,311 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:46,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:46,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2058176148, now seen corresponding path program 1 times [2022-01-10 13:39:46,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:46,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288271302] [2022-01-10 13:39:46,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:46,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:46,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:46,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:46,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288271302] [2022-01-10 13:39:46,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288271302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:46,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:46,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:46,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899686151] [2022-01-10 13:39:46,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:46,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:46,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:46,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:46,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:46,399 INFO L87 Difference]: Start difference. First operand 6838 states and 10006 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:46,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:46,820 INFO L93 Difference]: Finished difference Result 11524 states and 16012 transitions. [2022-01-10 13:39:46,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:46,820 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:46,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:46,827 INFO L225 Difference]: With dead ends: 11524 [2022-01-10 13:39:46,828 INFO L226 Difference]: Without dead ends: 6838 [2022-01-10 13:39:46,830 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 [2022-01-10 13:39:46,831 INFO L933 BasicCegarLoop]: 5675 mSDtfsCounter, 5473 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5473 SdHoareTripleChecker+Valid, 5770 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:39:46,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5473 Valid, 5770 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:46,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6838 states. [2022-01-10 13:39:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6838 to 6838. [2022-01-10 13:39:47,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6838 states, 6836 states have (on average 1.458308952603862) internal successors, (9969), 6837 states have internal predecessors, (9969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:47,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6838 states to 6838 states and 9969 transitions. [2022-01-10 13:39:47,163 INFO L78 Accepts]: Start accepts. Automaton has 6838 states and 9969 transitions. Word has length 143 [2022-01-10 13:39:47,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:47,163 INFO L470 AbstractCegarLoop]: Abstraction has 6838 states and 9969 transitions. [2022-01-10 13:39:47,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:47,164 INFO L276 IsEmpty]: Start isEmpty. Operand 6838 states and 9969 transitions. [2022-01-10 13:39:47,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 13:39:47,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:47,165 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] [2022-01-10 13:39:47,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 13:39:47,165 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:47,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:47,165 INFO L85 PathProgramCache]: Analyzing trace with hash -813411667, now seen corresponding path program 1 times [2022-01-10 13:39:47,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:47,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380075176] [2022-01-10 13:39:47,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:47,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:47,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:47,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:47,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380075176] [2022-01-10 13:39:47,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380075176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:47,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:47,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 13:39:47,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762934812] [2022-01-10 13:39:47,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:47,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:47,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:47,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:47,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:47,262 INFO L87 Difference]: Start difference. First operand 6838 states and 9969 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:48,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:48,070 INFO L93 Difference]: Finished difference Result 16031 states and 21700 transitions. [2022-01-10 13:39:48,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:48,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-10 13:39:48,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:48,120 INFO L225 Difference]: With dead ends: 16031 [2022-01-10 13:39:48,121 INFO L226 Difference]: Without dead ends: 11354 [2022-01-10 13:39:48,124 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 [2022-01-10 13:39:48,124 INFO L933 BasicCegarLoop]: 5675 mSDtfsCounter, 5516 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5516 SdHoareTripleChecker+Valid, 7212 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:39:48,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5516 Valid, 7212 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:39:48,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11354 states. [2022-01-10 13:39:48,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11354 to 11040. [2022-01-10 13:39:48,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11040 states, 11038 states have (on average 1.3856676934227214) internal successors, (15295), 11039 states have internal predecessors, (15295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:48,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11040 states to 11040 states and 15295 transitions. [2022-01-10 13:39:48,718 INFO L78 Accepts]: Start accepts. Automaton has 11040 states and 15295 transitions. Word has length 143 [2022-01-10 13:39:48,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:48,718 INFO L470 AbstractCegarLoop]: Abstraction has 11040 states and 15295 transitions. [2022-01-10 13:39:48,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 2 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:48,718 INFO L276 IsEmpty]: Start isEmpty. Operand 11040 states and 15295 transitions. [2022-01-10 13:39:48,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-10 13:39:48,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:48,725 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] [2022-01-10 13:39:48,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 13:39:48,726 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:48,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:48,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1520714266, now seen corresponding path program 1 times [2022-01-10 13:39:48,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:48,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900216873] [2022-01-10 13:39:48,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:48,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:48,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:48,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900216873] [2022-01-10 13:39:48,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900216873] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:48,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:48,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:39:48,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143108862] [2022-01-10 13:39:48,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:48,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:48,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:48,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:48,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:48,803 INFO L87 Difference]: Start difference. First operand 11040 states and 15295 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:50,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:50,217 INFO L93 Difference]: Finished difference Result 28514 states and 37538 transitions. [2022-01-10 13:39:50,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:50,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2022-01-10 13:39:50,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:50,236 INFO L225 Difference]: With dead ends: 28514 [2022-01-10 13:39:50,237 INFO L226 Difference]: Without dead ends: 19641 [2022-01-10 13:39:50,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:50,244 INFO L933 BasicCegarLoop]: 5672 mSDtfsCounter, 5543 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5543 SdHoareTripleChecker+Valid, 7209 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 13:39:50,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5543 Valid, 7209 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:50,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19641 states. [2022-01-10 13:39:51,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19641 to 19075. [2022-01-10 13:39:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19075 states, 19073 states have (on average 1.3353431552456352) internal successors, (25469), 19074 states have internal predecessors, (25469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:51,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19075 states to 19075 states and 25469 transitions. [2022-01-10 13:39:51,460 INFO L78 Accepts]: Start accepts. Automaton has 19075 states and 25469 transitions. Word has length 232 [2022-01-10 13:39:51,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:51,460 INFO L470 AbstractCegarLoop]: Abstraction has 19075 states and 25469 transitions. [2022-01-10 13:39:51,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:51,460 INFO L276 IsEmpty]: Start isEmpty. Operand 19075 states and 25469 transitions. [2022-01-10 13:39:51,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-10 13:39:51,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:51,471 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] [2022-01-10 13:39:51,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 13:39:51,471 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:51,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:51,472 INFO L85 PathProgramCache]: Analyzing trace with hash -812729894, now seen corresponding path program 1 times [2022-01-10 13:39:51,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:51,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80328728] [2022-01-10 13:39:51,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:51,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:51,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:51,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80328728] [2022-01-10 13:39:51,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80328728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:51,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:51,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 13:39:51,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873693813] [2022-01-10 13:39:51,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:51,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 13:39:51,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:51,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 13:39:51,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 13:39:51,556 INFO L87 Difference]: Start difference. First operand 19075 states and 25469 transitions. Second operand has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:54,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:54,116 INFO L93 Difference]: Finished difference Result 51589 states and 67040 transitions. [2022-01-10 13:39:54,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 13:39:54,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2022-01-10 13:39:54,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:54,159 INFO L225 Difference]: With dead ends: 51589 [2022-01-10 13:39:54,159 INFO L226 Difference]: Without dead ends: 34747 [2022-01-10 13:39:54,174 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 [2022-01-10 13:39:54,175 INFO L933 BasicCegarLoop]: 5640 mSDtfsCounter, 3536 mSDsluCounter, 16590 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3536 SdHoareTripleChecker+Valid, 22230 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 13:39:54,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3536 Valid, 22230 Invalid, 157 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 13:39:54,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34747 states. [2022-01-10 13:39:55,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34747 to 19123. [2022-01-10 13:39:55,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19123 states, 19121 states have (on average 1.3260812719000052) internal successors, (25356), 19122 states have internal predecessors, (25356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:55,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19123 states to 19123 states and 25356 transitions. [2022-01-10 13:39:55,660 INFO L78 Accepts]: Start accepts. Automaton has 19123 states and 25356 transitions. Word has length 232 [2022-01-10 13:39:55,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:39:55,660 INFO L470 AbstractCegarLoop]: Abstraction has 19123 states and 25356 transitions. [2022-01-10 13:39:55,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.4) internal successors, (232), 5 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:55,660 INFO L276 IsEmpty]: Start isEmpty. Operand 19123 states and 25356 transitions. [2022-01-10 13:39:55,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-10 13:39:55,668 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:39:55,668 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] [2022-01-10 13:39:55,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-10 13:39:55,669 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:39:55,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:39:55,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1074095912, now seen corresponding path program 1 times [2022-01-10 13:39:55,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:39:55,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582486508] [2022-01-10 13:39:55,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:39:55,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:39:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:39:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:39:55,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:39:55,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582486508] [2022-01-10 13:39:55,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582486508] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:39:55,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:39:55,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:39:55,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79922140] [2022-01-10 13:39:55,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:39:55,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:39:55,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:39:55,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:39:55,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:55,746 INFO L87 Difference]: Start difference. First operand 19123 states and 25356 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:39:58,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:39:58,394 INFO L93 Difference]: Finished difference Result 51857 states and 66239 transitions. [2022-01-10 13:39:58,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:39:58,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2022-01-10 13:39:58,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:39:58,443 INFO L225 Difference]: With dead ends: 51857 [2022-01-10 13:39:58,444 INFO L226 Difference]: Without dead ends: 34991 [2022-01-10 13:39:58,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:39:58,464 INFO L933 BasicCegarLoop]: 6681 mSDtfsCounter, 5304 mSDsluCounter, 1697 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5304 SdHoareTripleChecker+Valid, 8378 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 [2022-01-10 13:39:58,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5304 Valid, 8378 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:39:58,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34991 states. [2022-01-10 13:40:00,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34991 to 34989. [2022-01-10 13:40:01,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34989 states, 34987 states have (on average 1.2843913453568467) internal successors, (44937), 34988 states have internal predecessors, (44937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:40:01,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34989 states to 34989 states and 44937 transitions. [2022-01-10 13:40:01,060 INFO L78 Accepts]: Start accepts. Automaton has 34989 states and 44937 transitions. Word has length 232 [2022-01-10 13:40:01,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:40:01,060 INFO L470 AbstractCegarLoop]: Abstraction has 34989 states and 44937 transitions. [2022-01-10 13:40:01,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:40:01,061 INFO L276 IsEmpty]: Start isEmpty. Operand 34989 states and 44937 transitions. [2022-01-10 13:40:01,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-10 13:40:01,072 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:40:01,072 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] [2022-01-10 13:40:01,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-10 13:40:01,073 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:40:01,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:40:01,073 INFO L85 PathProgramCache]: Analyzing trace with hash -628558601, now seen corresponding path program 1 times [2022-01-10 13:40:01,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:40:01,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649583813] [2022-01-10 13:40:01,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:40:01,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:40:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:40:01,115 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 13:40:01,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:40:01,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649583813] [2022-01-10 13:40:01,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649583813] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:40:01,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:40:01,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:40:01,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58969743] [2022-01-10 13:40:01,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:40:01,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:40:01,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:40:01,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:40:01,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:40:01,118 INFO L87 Difference]: Start difference. First operand 34989 states and 44937 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:40:03,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 13:40:03,813 INFO L93 Difference]: Finished difference Result 67591 states and 85602 transitions. [2022-01-10 13:40:03,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 13:40:03,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 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 232 [2022-01-10 13:40:03,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 13:40:03,851 INFO L225 Difference]: With dead ends: 67591 [2022-01-10 13:40:03,852 INFO L226 Difference]: Without dead ends: 34859 [2022-01-10 13:40:03,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:40:03,870 INFO L933 BasicCegarLoop]: 5673 mSDtfsCounter, 1711 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1711 SdHoareTripleChecker+Valid, 9631 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 [2022-01-10 13:40:03,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1711 Valid, 9631 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 13:40:03,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34859 states. [2022-01-10 13:40:06,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34859 to 34859. [2022-01-10 13:40:06,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34859 states, 34857 states have (on average 1.2847634621453368) internal successors, (44783), 34858 states have internal predecessors, (44783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:40:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34859 states to 34859 states and 44783 transitions. [2022-01-10 13:40:06,395 INFO L78 Accepts]: Start accepts. Automaton has 34859 states and 44783 transitions. Word has length 232 [2022-01-10 13:40:06,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 13:40:06,396 INFO L470 AbstractCegarLoop]: Abstraction has 34859 states and 44783 transitions. [2022-01-10 13:40:06,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 13:40:06,396 INFO L276 IsEmpty]: Start isEmpty. Operand 34859 states and 44783 transitions. [2022-01-10 13:40:06,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-01-10 13:40:06,407 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 13:40:06,407 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] [2022-01-10 13:40:06,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-10 13:40:06,408 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 13:40:06,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 13:40:06,408 INFO L85 PathProgramCache]: Analyzing trace with hash -57305888, now seen corresponding path program 1 times [2022-01-10 13:40:06,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 13:40:06,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751178460] [2022-01-10 13:40:06,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 13:40:06,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 13:40:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 13:40:06,470 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 13:40:06,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 13:40:06,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751178460] [2022-01-10 13:40:06,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751178460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 13:40:06,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 13:40:06,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 13:40:06,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004905214] [2022-01-10 13:40:06,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 13:40:06,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 13:40:06,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 13:40:06,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 13:40:06,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 13:40:06,472 INFO L87 Difference]: Start difference. First operand 34859 states and 44783 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)