/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec0_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:49:31,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:49:31,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:49:31,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:49:31,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:49:31,529 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:49:31,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:49:31,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:49:31,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:49:31,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:49:31,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:49:31,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:49:31,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:49:31,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:49:31,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:49:31,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:49:31,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:49:31,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:49:31,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:49:31,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:49:31,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:49:31,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:49:31,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:49:31,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:49:31,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:49:31,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:49:31,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:49:31,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:49:31,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:49:31,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:49:31,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:49:31,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:49:31,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:49:31,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:49:31,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:49:31,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:49:31,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:49:31,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:49:31,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:49:31,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:49:31,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:49:31,567 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:49:31,585 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:49:31,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:49:31,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:49:31,586 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:49:31,587 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:49:31,587 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:49:31,588 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:49:31,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:49:31,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:49:31,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:49:31,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:49:31,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:49:31,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:49:31,589 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:49:31,589 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:49:31,589 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:49:31,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:49:31,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:49:31,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:49:31,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:49:31,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:49:31,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:49:31,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:49:31,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:49:31,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:49:31,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:49:31,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:49:31,592 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:49:31,592 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:49:31,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:49:31,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:49:31,592 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:49:31,593 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:49:31,594 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:49:31,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:49:31,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:49:31,840 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:49:31,841 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:49:31,841 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:49:31,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product31.cil.c [2022-01-10 23:49:31,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b728172cc/8dd830d44b0b41168b2edb492ca55e9a/FLAG13bc13354 [2022-01-10 23:49:32,428 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:49:32,428 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product31.cil.c [2022-01-10 23:49:32,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b728172cc/8dd830d44b0b41168b2edb492ca55e9a/FLAG13bc13354 [2022-01-10 23:49:32,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b728172cc/8dd830d44b0b41168b2edb492ca55e9a [2022-01-10 23:49:32,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:49:32,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:49:32,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:49:32,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:49:32,731 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:49:32,732 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:49:32" (1/1) ... [2022-01-10 23:49:32,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196e1c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:32, skipping insertion in model container [2022-01-10 23:49:32,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:49:32" (1/1) ... [2022-01-10 23:49:32,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:49:32,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:49:33,263 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product31.cil.c[35932,35945] [2022-01-10 23:49:33,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:49:33,342 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:49:33,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:49:33,399 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product31.cil.c[35932,35945] [2022-01-10 23:49:33,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:49:33,426 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:49:33,466 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product31.cil.c[35932,35945] [2022-01-10 23:49:33,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:49:33,527 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:49:33,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:33 WrapperNode [2022-01-10 23:49:33,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:49:33,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:49:33,528 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:49:33,528 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:49:33,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:33" (1/1) ... [2022-01-10 23:49:33,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:33" (1/1) ... [2022-01-10 23:49:33,704 INFO L137 Inliner]: procedures = 133, calls = 217, calls flagged for inlining = 128, calls inlined = 189, statements flattened = 2799 [2022-01-10 23:49:33,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:49:33,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:49:33,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:49:33,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:49:33,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:33" (1/1) ... [2022-01-10 23:49:33,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:33" (1/1) ... [2022-01-10 23:49:33,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:33" (1/1) ... [2022-01-10 23:49:33,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:33" (1/1) ... [2022-01-10 23:49:33,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:33" (1/1) ... [2022-01-10 23:49:33,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:33" (1/1) ... [2022-01-10 23:49:33,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:33" (1/1) ... [2022-01-10 23:49:33,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:49:33,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:49:33,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:49:33,826 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:49:33,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:33" (1/1) ... [2022-01-10 23:49:33,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:49:33,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:49:33,865 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 23:49:33,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 23:49:33,911 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:49:33,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:49:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:49:33,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:49:33,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:49:34,179 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:49:34,183 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:49:35,426 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:49:35,437 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:49:35,437 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:49:35,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:49:35 BoogieIcfgContainer [2022-01-10 23:49:35,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:49:35,441 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:49:35,441 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:49:35,442 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:49:35,445 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:49:35" (1/1) ... [2022-01-10 23:49:35,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:49:35 BasicIcfg [2022-01-10 23:49:35,839 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:49:35,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:49:35,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:49:35,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:49:35,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:49:32" (1/4) ... [2022-01-10 23:49:35,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6e20ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:49:35, skipping insertion in model container [2022-01-10 23:49:35,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:33" (2/4) ... [2022-01-10 23:49:35,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6e20ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:49:35, skipping insertion in model container [2022-01-10 23:49:35,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:49:35" (3/4) ... [2022-01-10 23:49:35,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f6e20ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:49:35, skipping insertion in model container [2022-01-10 23:49:35,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:49:35" (4/4) ... [2022-01-10 23:49:35,849 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product31.cil.cTransformedIcfg [2022-01-10 23:49:35,853 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:49:35,854 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 23:49:35,908 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:49:35,917 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 23:49:35,918 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 23:49:35,954 INFO L276 IsEmpty]: Start isEmpty. Operand has 612 states, 609 states have (on average 1.6732348111658457) internal successors, (1019), 611 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:35,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:49:35,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:35,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:35,977 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:35,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:35,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1056274179, now seen corresponding path program 1 times [2022-01-10 23:49:35,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:35,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588071883] [2022-01-10 23:49:35,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:35,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:36,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:36,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:36,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588071883] [2022-01-10 23:49:36,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588071883] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:36,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:36,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:49:36,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954855543] [2022-01-10 23:49:36,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:36,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:49:36,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:36,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:49:36,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:49:36,435 INFO L87 Difference]: Start difference. First operand has 612 states, 609 states have (on average 1.6732348111658457) internal successors, (1019), 611 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:36,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:36,506 INFO L93 Difference]: Finished difference Result 963 states and 1578 transitions. [2022-01-10 23:49:36,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:49:36,518 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 23:49:36,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:36,533 INFO L225 Difference]: With dead ends: 963 [2022-01-10 23:49:36,533 INFO L226 Difference]: Without dead ends: 560 [2022-01-10 23:49:36,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:49:36,541 INFO L933 BasicCegarLoop]: 1013 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:36,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:36,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-01-10 23:49:36,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2022-01-10 23:49:36,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 558 states have (on average 1.6863799283154122) internal successors, (941), 559 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:36,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 941 transitions. [2022-01-10 23:49:36,622 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 941 transitions. Word has length 72 [2022-01-10 23:49:36,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:36,623 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 941 transitions. [2022-01-10 23:49:36,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:36,625 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 941 transitions. [2022-01-10 23:49:36,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 23:49:36,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:36,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:36,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:49:36,630 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:36,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:36,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1948339621, now seen corresponding path program 1 times [2022-01-10 23:49:36,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:36,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296801963] [2022-01-10 23:49:36,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:36,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:36,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:36,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:36,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296801963] [2022-01-10 23:49:36,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296801963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:36,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:36,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:49:36,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982291892] [2022-01-10 23:49:36,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:36,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:49:36,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:36,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:49:36,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:36,909 INFO L87 Difference]: Start difference. First operand 560 states and 941 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:37,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:37,070 INFO L93 Difference]: Finished difference Result 1101 states and 1854 transitions. [2022-01-10 23:49:37,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:49:37,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 23:49:37,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:37,074 INFO L225 Difference]: With dead ends: 1101 [2022-01-10 23:49:37,075 INFO L226 Difference]: Without dead ends: 560 [2022-01-10 23:49:37,077 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:37,078 INFO L933 BasicCegarLoop]: 922 mSDtfsCounter, 916 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:37,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 935 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:37,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-01-10 23:49:37,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2022-01-10 23:49:37,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 558 states have (on average 1.6827956989247312) internal successors, (939), 559 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:37,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 939 transitions. [2022-01-10 23:49:37,116 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 939 transitions. Word has length 73 [2022-01-10 23:49:37,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:37,116 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 939 transitions. [2022-01-10 23:49:37,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:37,117 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 939 transitions. [2022-01-10 23:49:37,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 23:49:37,118 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:37,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:37,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:49:37,119 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:37,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:37,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1693535269, now seen corresponding path program 1 times [2022-01-10 23:49:37,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:37,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916260704] [2022-01-10 23:49:37,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:37,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:37,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:37,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:37,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916260704] [2022-01-10 23:49:37,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916260704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:37,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:37,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:49:37,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853210350] [2022-01-10 23:49:37,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:37,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:49:37,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:37,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:49:37,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:49:37,304 INFO L87 Difference]: Start difference. First operand 560 states and 939 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:37,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:37,575 INFO L93 Difference]: Finished difference Result 2668 states and 4491 transitions. [2022-01-10 23:49:37,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:49:37,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-10 23:49:37,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:37,589 INFO L225 Difference]: With dead ends: 2668 [2022-01-10 23:49:37,589 INFO L226 Difference]: Without dead ends: 2132 [2022-01-10 23:49:37,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:49:37,600 INFO L933 BasicCegarLoop]: 1801 mSDtfsCounter, 4478 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4478 SdHoareTripleChecker+Valid, 4490 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:37,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4478 Valid, 4490 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:49:37,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2022-01-10 23:49:37,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 560. [2022-01-10 23:49:37,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 558 states have (on average 1.6810035842293907) internal successors, (938), 559 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:37,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 938 transitions. [2022-01-10 23:49:37,674 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 938 transitions. Word has length 75 [2022-01-10 23:49:37,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:37,676 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 938 transitions. [2022-01-10 23:49:37,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:37,676 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 938 transitions. [2022-01-10 23:49:37,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 23:49:37,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:37,679 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:37,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:49:37,679 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:37,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:37,680 INFO L85 PathProgramCache]: Analyzing trace with hash -502941341, now seen corresponding path program 1 times [2022-01-10 23:49:37,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:37,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080650110] [2022-01-10 23:49:37,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:37,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:37,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:37,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:37,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080650110] [2022-01-10 23:49:37,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080650110] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:37,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:37,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:49:37,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662908644] [2022-01-10 23:49:37,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:37,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:49:37,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:37,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:49:37,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:37,846 INFO L87 Difference]: Start difference. First operand 560 states and 938 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:37,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:37,904 INFO L93 Difference]: Finished difference Result 1105 states and 1854 transitions. [2022-01-10 23:49:37,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:49:37,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 23:49:37,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:37,908 INFO L225 Difference]: With dead ends: 1105 [2022-01-10 23:49:37,908 INFO L226 Difference]: Without dead ends: 574 [2022-01-10 23:49:37,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:37,919 INFO L933 BasicCegarLoop]: 952 mSDtfsCounter, 917 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:37,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 974 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:37,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-01-10 23:49:37,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 560. [2022-01-10 23:49:37,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 558 states have (on average 1.67921146953405) internal successors, (937), 559 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:37,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 937 transitions. [2022-01-10 23:49:37,956 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 937 transitions. Word has length 76 [2022-01-10 23:49:37,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:37,956 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 937 transitions. [2022-01-10 23:49:37,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:37,957 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 937 transitions. [2022-01-10 23:49:37,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 23:49:37,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:37,958 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] [2022-01-10 23:49:37,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:49:37,959 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:37,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:37,960 INFO L85 PathProgramCache]: Analyzing trace with hash 535637628, now seen corresponding path program 1 times [2022-01-10 23:49:37,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:37,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102790610] [2022-01-10 23:49:37,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:37,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:38,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:38,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:38,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102790610] [2022-01-10 23:49:38,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102790610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:38,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:38,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:49:38,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061162804] [2022-01-10 23:49:38,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:38,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:49:38,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:38,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:49:38,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:49:38,105 INFO L87 Difference]: Start difference. First operand 560 states and 937 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:38,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:38,283 INFO L93 Difference]: Finished difference Result 1614 states and 2711 transitions. [2022-01-10 23:49:38,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:49:38,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-01-10 23:49:38,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:38,289 INFO L225 Difference]: With dead ends: 1614 [2022-01-10 23:49:38,289 INFO L226 Difference]: Without dead ends: 1088 [2022-01-10 23:49:38,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:49:38,291 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 4401 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4401 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:38,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4401 Valid, 1906 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:49:38,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2022-01-10 23:49:38,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 560. [2022-01-10 23:49:38,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 558 states have (on average 1.6756272401433692) internal successors, (935), 559 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:38,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 935 transitions. [2022-01-10 23:49:38,338 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 935 transitions. Word has length 77 [2022-01-10 23:49:38,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:38,343 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 935 transitions. [2022-01-10 23:49:38,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:38,344 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 935 transitions. [2022-01-10 23:49:38,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 23:49:38,345 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:38,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:38,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:49:38,346 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:38,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:38,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1380573657, now seen corresponding path program 1 times [2022-01-10 23:49:38,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:38,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28872644] [2022-01-10 23:49:38,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:38,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:38,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:38,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:38,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28872644] [2022-01-10 23:49:38,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28872644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:38,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:38,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:49:38,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047831351] [2022-01-10 23:49:38,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:38,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:49:38,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:38,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:49:38,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:49:38,544 INFO L87 Difference]: Start difference. First operand 560 states and 935 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:39,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:39,147 INFO L93 Difference]: Finished difference Result 3778 states and 6205 transitions. [2022-01-10 23:49:39,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:49:39,149 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-01-10 23:49:39,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:39,166 INFO L225 Difference]: With dead ends: 3778 [2022-01-10 23:49:39,166 INFO L226 Difference]: Without dead ends: 3496 [2022-01-10 23:49:39,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:49:39,171 INFO L933 BasicCegarLoop]: 1529 mSDtfsCounter, 6477 mSDsluCounter, 5767 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6477 SdHoareTripleChecker+Valid, 7296 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:39,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6477 Valid, 7296 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:49:39,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2022-01-10 23:49:39,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 987. [2022-01-10 23:49:39,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 985 states have (on average 1.6781725888324872) internal successors, (1653), 986 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:39,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1653 transitions. [2022-01-10 23:49:39,303 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1653 transitions. Word has length 79 [2022-01-10 23:49:39,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:39,303 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 1653 transitions. [2022-01-10 23:49:39,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:39,303 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1653 transitions. [2022-01-10 23:49:39,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 23:49:39,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:39,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:39,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:49:39,306 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:39,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:39,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1893328653, now seen corresponding path program 1 times [2022-01-10 23:49:39,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:39,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033288810] [2022-01-10 23:49:39,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:39,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:39,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:39,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:39,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033288810] [2022-01-10 23:49:39,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033288810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:39,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:39,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:49:39,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160991037] [2022-01-10 23:49:39,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:39,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:49:39,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:39,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:49:39,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:49:39,448 INFO L87 Difference]: Start difference. First operand 987 states and 1653 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:40,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:40,234 INFO L93 Difference]: Finished difference Result 6371 states and 10489 transitions. [2022-01-10 23:49:40,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:49:40,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 23:49:40,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:40,260 INFO L225 Difference]: With dead ends: 6371 [2022-01-10 23:49:40,260 INFO L226 Difference]: Without dead ends: 5928 [2022-01-10 23:49:40,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:49:40,264 INFO L933 BasicCegarLoop]: 1998 mSDtfsCounter, 5311 mSDsluCounter, 5317 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5311 SdHoareTripleChecker+Valid, 7315 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:40,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5311 Valid, 7315 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:49:40,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5928 states. [2022-01-10 23:49:40,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5928 to 1818. [2022-01-10 23:49:40,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1816 states have (on average 1.6844713656387664) internal successors, (3059), 1817 states have internal predecessors, (3059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:40,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 3059 transitions. [2022-01-10 23:49:40,467 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 3059 transitions. Word has length 80 [2022-01-10 23:49:40,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:40,468 INFO L470 AbstractCegarLoop]: Abstraction has 1818 states and 3059 transitions. [2022-01-10 23:49:40,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:40,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 3059 transitions. [2022-01-10 23:49:40,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 23:49:40,472 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:40,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:40,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:49:40,472 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:40,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:40,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1598940061, now seen corresponding path program 1 times [2022-01-10 23:49:40,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:40,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511654482] [2022-01-10 23:49:40,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:40,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:40,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:40,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:40,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511654482] [2022-01-10 23:49:40,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511654482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:40,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:40,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:49:40,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301486624] [2022-01-10 23:49:40,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:40,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:49:40,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:40,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:49:40,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:49:40,562 INFO L87 Difference]: Start difference. First operand 1818 states and 3059 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:41,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:41,017 INFO L93 Difference]: Finished difference Result 5266 states and 8917 transitions. [2022-01-10 23:49:41,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:49:41,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-01-10 23:49:41,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:41,034 INFO L225 Difference]: With dead ends: 5266 [2022-01-10 23:49:41,034 INFO L226 Difference]: Without dead ends: 3498 [2022-01-10 23:49:41,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:49:41,039 INFO L933 BasicCegarLoop]: 1773 mSDtfsCounter, 2742 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2742 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:41,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2742 Valid, 2661 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:49:41,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3498 states. [2022-01-10 23:49:41,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3498 to 1818. [2022-01-10 23:49:41,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1816 states have (on average 1.6833700440528634) internal successors, (3057), 1817 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:41,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 3057 transitions. [2022-01-10 23:49:41,216 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 3057 transitions. Word has length 80 [2022-01-10 23:49:41,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:41,216 INFO L470 AbstractCegarLoop]: Abstraction has 1818 states and 3057 transitions. [2022-01-10 23:49:41,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:41,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 3057 transitions. [2022-01-10 23:49:41,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 23:49:41,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:41,219 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] [2022-01-10 23:49:41,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:49:41,220 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:41,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:41,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1605358345, now seen corresponding path program 1 times [2022-01-10 23:49:41,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:41,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984847422] [2022-01-10 23:49:41,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:41,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:41,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:41,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:41,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984847422] [2022-01-10 23:49:41,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984847422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:41,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:41,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:49:41,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564089146] [2022-01-10 23:49:41,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:41,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:49:41,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:41,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:49:41,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:49:41,327 INFO L87 Difference]: Start difference. First operand 1818 states and 3057 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:42,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:42,705 INFO L93 Difference]: Finished difference Result 11502 states and 18997 transitions. [2022-01-10 23:49:42,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:49:42,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-10 23:49:42,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:42,758 INFO L225 Difference]: With dead ends: 11502 [2022-01-10 23:49:42,759 INFO L226 Difference]: Without dead ends: 10740 [2022-01-10 23:49:42,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:49:42,766 INFO L933 BasicCegarLoop]: 2004 mSDtfsCounter, 5249 mSDsluCounter, 5355 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5249 SdHoareTripleChecker+Valid, 7359 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:42,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5249 Valid, 7359 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:49:42,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10740 states. [2022-01-10 23:49:43,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10740 to 3441. [2022-01-10 23:49:43,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3441 states, 3439 states have (on average 1.6932247746437918) internal successors, (5823), 3440 states have internal predecessors, (5823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:43,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3441 states to 3441 states and 5823 transitions. [2022-01-10 23:49:43,269 INFO L78 Accepts]: Start accepts. Automaton has 3441 states and 5823 transitions. Word has length 81 [2022-01-10 23:49:43,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:43,269 INFO L470 AbstractCegarLoop]: Abstraction has 3441 states and 5823 transitions. [2022-01-10 23:49:43,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:43,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3441 states and 5823 transitions. [2022-01-10 23:49:43,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 23:49:43,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:43,276 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] [2022-01-10 23:49:43,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:49:43,276 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:43,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:43,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1228028952, now seen corresponding path program 1 times [2022-01-10 23:49:43,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:43,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892404064] [2022-01-10 23:49:43,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:43,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:43,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:43,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:43,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892404064] [2022-01-10 23:49:43,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892404064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:43,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:43,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:49:43,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934159014] [2022-01-10 23:49:43,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:43,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:49:43,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:43,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:49:43,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:49:43,445 INFO L87 Difference]: Start difference. First operand 3441 states and 5823 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:45,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:45,637 INFO L93 Difference]: Finished difference Result 14570 states and 23423 transitions. [2022-01-10 23:49:45,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:49:45,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-10 23:49:45,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:45,669 INFO L225 Difference]: With dead ends: 14570 [2022-01-10 23:49:45,669 INFO L226 Difference]: Without dead ends: 13273 [2022-01-10 23:49:45,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:49:45,674 INFO L933 BasicCegarLoop]: 1265 mSDtfsCounter, 9160 mSDsluCounter, 7211 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9160 SdHoareTripleChecker+Valid, 8476 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:45,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9160 Valid, 8476 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:49:45,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13273 states. [2022-01-10 23:49:46,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13273 to 6692. [2022-01-10 23:49:46,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6692 states, 6690 states have (on average 1.699103139013453) internal successors, (11367), 6691 states have internal predecessors, (11367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:46,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6692 states to 6692 states and 11367 transitions. [2022-01-10 23:49:46,427 INFO L78 Accepts]: Start accepts. Automaton has 6692 states and 11367 transitions. Word has length 81 [2022-01-10 23:49:46,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:46,428 INFO L470 AbstractCegarLoop]: Abstraction has 6692 states and 11367 transitions. [2022-01-10 23:49:46,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:46,429 INFO L276 IsEmpty]: Start isEmpty. Operand 6692 states and 11367 transitions. [2022-01-10 23:49:46,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 23:49:46,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:46,441 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:46,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:49:46,441 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:46,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:46,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2065595626, now seen corresponding path program 1 times [2022-01-10 23:49:46,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:46,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98209278] [2022-01-10 23:49:46,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:46,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:46,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:46,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:46,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98209278] [2022-01-10 23:49:46,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98209278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:46,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:46,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:49:46,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789565351] [2022-01-10 23:49:46,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:46,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:49:46,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:46,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:49:46,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:49:46,587 INFO L87 Difference]: Start difference. First operand 6692 states and 11367 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:49,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:49,659 INFO L93 Difference]: Finished difference Result 25708 states and 41521 transitions. [2022-01-10 23:49:49,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:49:49,660 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 23:49:49,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:49,713 INFO L225 Difference]: With dead ends: 25708 [2022-01-10 23:49:49,714 INFO L226 Difference]: Without dead ends: 23222 [2022-01-10 23:49:49,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:49:49,726 INFO L933 BasicCegarLoop]: 1125 mSDtfsCounter, 9148 mSDsluCounter, 6502 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9148 SdHoareTripleChecker+Valid, 7627 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:49,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9148 Valid, 7627 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:49:49,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23222 states. [2022-01-10 23:49:51,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23222 to 13211. [2022-01-10 23:49:51,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13211 states, 13209 states have (on average 1.7019456431221136) internal successors, (22481), 13210 states have internal predecessors, (22481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:51,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13211 states to 13211 states and 22481 transitions. [2022-01-10 23:49:51,104 INFO L78 Accepts]: Start accepts. Automaton has 13211 states and 22481 transitions. Word has length 82 [2022-01-10 23:49:51,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:51,105 INFO L470 AbstractCegarLoop]: Abstraction has 13211 states and 22481 transitions. [2022-01-10 23:49:51,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:51,106 INFO L276 IsEmpty]: Start isEmpty. Operand 13211 states and 22481 transitions. [2022-01-10 23:49:51,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 23:49:51,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:51,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:51,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:49:51,128 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:51,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:51,129 INFO L85 PathProgramCache]: Analyzing trace with hash 45694743, now seen corresponding path program 1 times [2022-01-10 23:49:51,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:51,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792702180] [2022-01-10 23:49:51,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:51,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:51,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:51,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:51,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792702180] [2022-01-10 23:49:51,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792702180] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:51,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:51,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:49:51,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019159002] [2022-01-10 23:49:51,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:51,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:49:51,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:51,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:49:51,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:49:51,265 INFO L87 Difference]: Start difference. First operand 13211 states and 22481 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:54,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:54,114 INFO L93 Difference]: Finished difference Result 34059 states and 57079 transitions. [2022-01-10 23:49:54,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:49:54,114 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 23:49:54,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:54,189 INFO L225 Difference]: With dead ends: 34059 [2022-01-10 23:49:54,189 INFO L226 Difference]: Without dead ends: 32186 [2022-01-10 23:49:54,206 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:49:54,207 INFO L933 BasicCegarLoop]: 1763 mSDtfsCounter, 4996 mSDsluCounter, 5878 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4996 SdHoareTripleChecker+Valid, 7641 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:54,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4996 Valid, 7641 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:49:54,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32186 states. [2022-01-10 23:49:55,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32186 to 13358. [2022-01-10 23:49:55,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13358 states, 13356 states have (on average 1.6998352800239593) internal successors, (22703), 13357 states have internal predecessors, (22703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:55,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13358 states to 13358 states and 22703 transitions. [2022-01-10 23:49:55,790 INFO L78 Accepts]: Start accepts. Automaton has 13358 states and 22703 transitions. Word has length 82 [2022-01-10 23:49:55,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:55,790 INFO L470 AbstractCegarLoop]: Abstraction has 13358 states and 22703 transitions. [2022-01-10 23:49:55,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:55,791 INFO L276 IsEmpty]: Start isEmpty. Operand 13358 states and 22703 transitions. [2022-01-10 23:49:55,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 23:49:55,809 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:55,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:55,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:49:55,809 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:55,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:55,810 INFO L85 PathProgramCache]: Analyzing trace with hash -755596342, now seen corresponding path program 1 times [2022-01-10 23:49:55,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:55,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478945593] [2022-01-10 23:49:55,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:55,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:55,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:55,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:55,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478945593] [2022-01-10 23:49:55,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478945593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:55,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:55,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:49:55,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309669759] [2022-01-10 23:49:55,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:55,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:49:55,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:55,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:49:55,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:49:55,987 INFO L87 Difference]: Start difference. First operand 13358 states and 22703 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:00,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:00,808 INFO L93 Difference]: Finished difference Result 38166 states and 60515 transitions. [2022-01-10 23:50:00,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:50:00,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 23:50:00,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:00,897 INFO L225 Difference]: With dead ends: 38166 [2022-01-10 23:50:00,897 INFO L226 Difference]: Without dead ends: 34690 [2022-01-10 23:50:00,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:50:00,919 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 3226 mSDsluCounter, 3228 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3226 SdHoareTripleChecker+Valid, 4155 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:00,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3226 Valid, 4155 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:00,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34690 states. [2022-01-10 23:50:02,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34690 to 18526. [2022-01-10 23:50:02,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18526 states, 18524 states have (on average 1.6516950982509178) internal successors, (30596), 18525 states have internal predecessors, (30596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:03,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18526 states to 18526 states and 30596 transitions. [2022-01-10 23:50:03,040 INFO L78 Accepts]: Start accepts. Automaton has 18526 states and 30596 transitions. Word has length 82 [2022-01-10 23:50:03,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:03,041 INFO L470 AbstractCegarLoop]: Abstraction has 18526 states and 30596 transitions. [2022-01-10 23:50:03,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:03,041 INFO L276 IsEmpty]: Start isEmpty. Operand 18526 states and 30596 transitions. [2022-01-10 23:50:03,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 23:50:03,064 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:03,064 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:03,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:50:03,065 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:03,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:03,065 INFO L85 PathProgramCache]: Analyzing trace with hash -446893979, now seen corresponding path program 1 times [2022-01-10 23:50:03,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:03,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062545488] [2022-01-10 23:50:03,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:03,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:03,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:03,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062545488] [2022-01-10 23:50:03,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062545488] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:03,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:03,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:50:03,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923310491] [2022-01-10 23:50:03,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:03,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:50:03,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:03,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:50:03,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:50:03,184 INFO L87 Difference]: Start difference. First operand 18526 states and 30596 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:09,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:09,464 INFO L93 Difference]: Finished difference Result 46232 states and 70919 transitions. [2022-01-10 23:50:09,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:50:09,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 23:50:09,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:09,544 INFO L225 Difference]: With dead ends: 46232 [2022-01-10 23:50:09,544 INFO L226 Difference]: Without dead ends: 41012 [2022-01-10 23:50:09,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:50:09,567 INFO L933 BasicCegarLoop]: 1183 mSDtfsCounter, 1876 mSDsluCounter, 3605 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1876 SdHoareTripleChecker+Valid, 4788 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:09,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1876 Valid, 4788 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:09,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41012 states. [2022-01-10 23:50:11,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41012 to 18658. [2022-01-10 23:50:11,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18658 states, 18656 states have (on average 1.6470840480274442) internal successors, (30728), 18657 states have internal predecessors, (30728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:11,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18658 states to 18658 states and 30728 transitions. [2022-01-10 23:50:11,750 INFO L78 Accepts]: Start accepts. Automaton has 18658 states and 30728 transitions. Word has length 84 [2022-01-10 23:50:11,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:11,750 INFO L470 AbstractCegarLoop]: Abstraction has 18658 states and 30728 transitions. [2022-01-10 23:50:11,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:11,750 INFO L276 IsEmpty]: Start isEmpty. Operand 18658 states and 30728 transitions. [2022-01-10 23:50:11,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 23:50:11,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:11,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:11,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:50:11,777 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:11,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:11,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1814963461, now seen corresponding path program 1 times [2022-01-10 23:50:11,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:11,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853775376] [2022-01-10 23:50:11,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:11,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:11,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:11,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:11,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853775376] [2022-01-10 23:50:11,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853775376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:11,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:11,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:50:11,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689343786] [2022-01-10 23:50:11,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:11,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:50:11,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:11,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:50:11,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:50:11,945 INFO L87 Difference]: Start difference. First operand 18658 states and 30728 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:15,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:15,305 INFO L93 Difference]: Finished difference Result 31265 states and 49358 transitions. [2022-01-10 23:50:15,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 23:50:15,306 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 23:50:15,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:15,344 INFO L225 Difference]: With dead ends: 31265 [2022-01-10 23:50:15,344 INFO L226 Difference]: Without dead ends: 22457 [2022-01-10 23:50:15,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2022-01-10 23:50:15,365 INFO L933 BasicCegarLoop]: 910 mSDtfsCounter, 3709 mSDsluCounter, 4946 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3709 SdHoareTripleChecker+Valid, 5856 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:15,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3709 Valid, 5856 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:15,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22457 states. [2022-01-10 23:50:17,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22457 to 18530. [2022-01-10 23:50:17,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18530 states, 18528 states have (on average 1.6411917098445596) internal successors, (30408), 18529 states have internal predecessors, (30408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:17,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18530 states to 18530 states and 30408 transitions. [2022-01-10 23:50:17,569 INFO L78 Accepts]: Start accepts. Automaton has 18530 states and 30408 transitions. Word has length 84 [2022-01-10 23:50:17,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:17,569 INFO L470 AbstractCegarLoop]: Abstraction has 18530 states and 30408 transitions. [2022-01-10 23:50:17,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:17,569 INFO L276 IsEmpty]: Start isEmpty. Operand 18530 states and 30408 transitions. [2022-01-10 23:50:17,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 23:50:17,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:17,589 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] [2022-01-10 23:50:17,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:50:17,590 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:17,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:17,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1546363306, now seen corresponding path program 1 times [2022-01-10 23:50:17,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:17,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651186964] [2022-01-10 23:50:17,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:17,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:17,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:17,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:17,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651186964] [2022-01-10 23:50:17,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651186964] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:17,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:17,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:50:17,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742389805] [2022-01-10 23:50:17,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:17,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:50:17,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:17,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:50:17,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:50:17,690 INFO L87 Difference]: Start difference. First operand 18530 states and 30408 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:24,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:24,434 INFO L93 Difference]: Finished difference Result 51480 states and 79894 transitions. [2022-01-10 23:50:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:50:24,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-01-10 23:50:24,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:24,498 INFO L225 Difference]: With dead ends: 51480 [2022-01-10 23:50:24,498 INFO L226 Difference]: Without dead ends: 41360 [2022-01-10 23:50:24,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:50:24,515 INFO L933 BasicCegarLoop]: 1138 mSDtfsCounter, 1109 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1109 SdHoareTripleChecker+Valid, 3188 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:24,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1109 Valid, 3188 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:24,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41360 states. [2022-01-10 23:50:26,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41360 to 18602. [2022-01-10 23:50:27,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18602 states, 18600 states have (on average 1.6387096774193548) internal successors, (30480), 18601 states have internal predecessors, (30480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18602 states to 18602 states and 30480 transitions. [2022-01-10 23:50:27,028 INFO L78 Accepts]: Start accepts. Automaton has 18602 states and 30480 transitions. Word has length 86 [2022-01-10 23:50:27,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:27,028 INFO L470 AbstractCegarLoop]: Abstraction has 18602 states and 30480 transitions. [2022-01-10 23:50:27,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:27,028 INFO L276 IsEmpty]: Start isEmpty. Operand 18602 states and 30480 transitions. [2022-01-10 23:50:27,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 23:50:27,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:27,043 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] [2022-01-10 23:50:27,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:50:27,043 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:27,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:27,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1708717813, now seen corresponding path program 1 times [2022-01-10 23:50:27,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:27,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673333958] [2022-01-10 23:50:27,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:27,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:27,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:27,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:27,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673333958] [2022-01-10 23:50:27,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673333958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:27,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:27,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:50:27,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996632917] [2022-01-10 23:50:27,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:27,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:50:27,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:27,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:50:27,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:50:27,149 INFO L87 Difference]: Start difference. First operand 18602 states and 30480 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)