/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_spec9_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:01:50,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:01:50,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:01:50,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:01:50,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:01:50,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:01:50,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:01:50,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:01:50,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:01:50,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:01:50,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:01:50,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:01:50,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:01:50,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:01:50,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:01:50,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:01:50,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:01:50,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:01:50,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:01:50,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:01:50,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:01:50,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:01:50,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:01:50,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:01:50,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:01:50,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:01:50,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:01:50,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:01:50,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:01:50,466 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:01:50,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:01:50,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:01:50,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:01:50,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:01:50,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:01:50,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:01:50,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:01:50,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:01:50,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:01:50,470 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:01:50,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:01:50,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:01:50,507 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:01:50,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:01:50,508 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:01:50,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:01:50,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:01:50,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:01:50,510 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:01:50,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:01:50,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:01:50,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:01:50,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:01:50,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:01:50,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:01:50,512 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:01:50,512 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:01:50,512 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:01:50,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:01:50,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:01:50,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:01:50,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:01:50,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:01:50,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:01:50,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:01:50,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:01:50,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:01:50,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:01:50,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:01:50,514 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:01:50,515 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:01:50,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:01:50,515 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:01:50,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:01:50,516 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:01:50,516 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:01:50,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:01:50,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:01:50,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:01:50,778 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:01:50,780 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:01:50,781 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product30.cil.c [2022-01-11 00:01:50,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669beaebd/0366bff6d9034a889b252e8e47c89514/FLAG94527e985 [2022-01-11 00:01:51,366 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:01:51,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product30.cil.c [2022-01-11 00:01:51,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669beaebd/0366bff6d9034a889b252e8e47c89514/FLAG94527e985 [2022-01-11 00:01:51,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/669beaebd/0366bff6d9034a889b252e8e47c89514 [2022-01-11 00:01:51,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:01:51,869 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:01:51,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:01:51,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:01:51,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:01:51,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:01:51" (1/1) ... [2022-01-11 00:01:51,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67dba107 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:51, skipping insertion in model container [2022-01-11 00:01:51,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:01:51" (1/1) ... [2022-01-11 00:01:51,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:01:51,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:01:52,322 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_spec9_product30.cil.c[41508,41521] [2022-01-11 00:01:52,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:01:52,398 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 00:01:52,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:01:52,487 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_spec9_product30.cil.c[41508,41521] [2022-01-11 00:01:52,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:01:52,516 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:01:52,559 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_spec9_product30.cil.c[41508,41521] [2022-01-11 00:01:52,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:01:52,608 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:01:52,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:52 WrapperNode [2022-01-11 00:01:52,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:01:52,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:01:52,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:01:52,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:01:52,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:52" (1/1) ... [2022-01-11 00:01:52,649 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:52" (1/1) ... [2022-01-11 00:01:52,743 INFO L137 Inliner]: procedures = 134, calls = 223, calls flagged for inlining = 130, calls inlined = 161, statements flattened = 2389 [2022-01-11 00:01:52,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:01:52,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:01:52,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:01:52,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:01:52,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:52" (1/1) ... [2022-01-11 00:01:52,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:52" (1/1) ... [2022-01-11 00:01:52,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:52" (1/1) ... [2022-01-11 00:01:52,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:52" (1/1) ... [2022-01-11 00:01:52,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:52" (1/1) ... [2022-01-11 00:01:52,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:52" (1/1) ... [2022-01-11 00:01:52,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:52" (1/1) ... [2022-01-11 00:01:52,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:01:52,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:01:52,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:01:52,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:01:52,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:52" (1/1) ... [2022-01-11 00:01:52,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:01:52,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:01:52,915 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 00:01:52,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 00:01:52,944 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-11 00:01:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:01:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:01:52,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:01:52,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:01:53,204 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:01:53,206 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:01:54,357 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:01:54,372 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:01:54,372 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 00:01:54,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:01:54 BoogieIcfgContainer [2022-01-11 00:01:54,375 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:01:54,375 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:01:54,375 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:01:54,378 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:01:54,381 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:01:54" (1/1) ... [2022-01-11 00:01:54,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:01:54 BasicIcfg [2022-01-11 00:01:54,804 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:01:54,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:01:54,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:01:54,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:01:54,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:01:51" (1/4) ... [2022-01-11 00:01:54,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33df918c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:01:54, skipping insertion in model container [2022-01-11 00:01:54,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:01:52" (2/4) ... [2022-01-11 00:01:54,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33df918c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:01:54, skipping insertion in model container [2022-01-11 00:01:54,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:01:54" (3/4) ... [2022-01-11 00:01:54,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33df918c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:01:54, skipping insertion in model container [2022-01-11 00:01:54,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:01:54" (4/4) ... [2022-01-11 00:01:54,810 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_product30.cil.cTransformedIcfg [2022-01-11 00:01:54,815 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:01:54,815 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 00:01:54,864 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:01:54,873 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 00:01:54,873 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 00:01:54,901 INFO L276 IsEmpty]: Start isEmpty. Operand has 554 states, 551 states have (on average 1.6896551724137931) internal successors, (931), 553 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:54,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-11 00:01:54,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:54,921 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] [2022-01-11 00:01:54,921 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:54,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:54,929 INFO L85 PathProgramCache]: Analyzing trace with hash 985803967, now seen corresponding path program 1 times [2022-01-11 00:01:54,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:54,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710550668] [2022-01-11 00:01:54,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:54,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:55,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:55,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:55,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710550668] [2022-01-11 00:01:55,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710550668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:55,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:55,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:01:55,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179938162] [2022-01-11 00:01:55,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:55,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 00:01:55,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:55,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 00:01:55,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:01:55,370 INFO L87 Difference]: Start difference. First operand has 554 states, 551 states have (on average 1.6896551724137931) internal successors, (931), 553 states have internal predecessors, (931), 0 states have call successors, (0), 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 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:55,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:55,431 INFO L93 Difference]: Finished difference Result 847 states and 1402 transitions. [2022-01-11 00:01:55,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 00:01:55,433 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-11 00:01:55,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:55,445 INFO L225 Difference]: With dead ends: 847 [2022-01-11 00:01:55,445 INFO L226 Difference]: Without dead ends: 456 [2022-01-11 00:01:55,449 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:01:55,452 INFO L933 BasicCegarLoop]: 925 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, 925 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:55,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:01:55,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-01-11 00:01:55,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2022-01-11 00:01:55,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 454 states have (on average 1.7004405286343611) internal successors, (772), 455 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:55,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 772 transitions. [2022-01-11 00:01:55,527 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 772 transitions. Word has length 52 [2022-01-11 00:01:55,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:55,528 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 772 transitions. [2022-01-11 00:01:55,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:55,528 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 772 transitions. [2022-01-11 00:01:55,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-11 00:01:55,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:55,530 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] [2022-01-11 00:01:55,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:01:55,531 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:55,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:55,531 INFO L85 PathProgramCache]: Analyzing trace with hash 684768849, now seen corresponding path program 1 times [2022-01-11 00:01:55,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:55,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255588015] [2022-01-11 00:01:55,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:55,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:55,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:55,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:55,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255588015] [2022-01-11 00:01:55,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255588015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:55,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:55,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:01:55,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879990317] [2022-01-11 00:01:55,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:55,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:01:55,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:55,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:01:55,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:01:55,764 INFO L87 Difference]: Start difference. First operand 456 states and 772 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:55,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:55,809 INFO L93 Difference]: Finished difference Result 598 states and 998 transitions. [2022-01-11 00:01:55,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:01:55,810 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-01-11 00:01:55,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:55,813 INFO L225 Difference]: With dead ends: 598 [2022-01-11 00:01:55,813 INFO L226 Difference]: Without dead ends: 450 [2022-01-11 00:01:55,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:01:55,815 INFO L933 BasicCegarLoop]: 762 mSDtfsCounter, 499 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:55,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 976 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:01:55,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-01-11 00:01:55,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2022-01-11 00:01:55,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 1.6993318485523385) internal successors, (763), 449 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:55,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 763 transitions. [2022-01-11 00:01:55,854 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 763 transitions. Word has length 53 [2022-01-11 00:01:55,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:55,856 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 763 transitions. [2022-01-11 00:01:55,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:55,858 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 763 transitions. [2022-01-11 00:01:55,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-11 00:01:55,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:55,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:55,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:01:55,862 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:55,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:55,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1557252985, now seen corresponding path program 1 times [2022-01-11 00:01:55,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:55,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775188276] [2022-01-11 00:01:55,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:55,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:56,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:56,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:56,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775188276] [2022-01-11 00:01:56,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775188276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:56,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:56,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:01:56,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583387397] [2022-01-11 00:01:56,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:56,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:01:56,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:56,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:01:56,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:01:56,128 INFO L87 Difference]: Start difference. First operand 450 states and 763 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:56,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:56,222 INFO L93 Difference]: Finished difference Result 881 states and 1498 transitions. [2022-01-11 00:01:56,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:01:56,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-11 00:01:56,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:56,226 INFO L225 Difference]: With dead ends: 881 [2022-01-11 00:01:56,226 INFO L226 Difference]: Without dead ends: 450 [2022-01-11 00:01:56,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:01:56,235 INFO L933 BasicCegarLoop]: 744 mSDtfsCounter, 738 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:56,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 757 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:01:56,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-01-11 00:01:56,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2022-01-11 00:01:56,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 1.6948775055679288) internal successors, (761), 449 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:56,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 761 transitions. [2022-01-11 00:01:56,266 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 761 transitions. Word has length 102 [2022-01-11 00:01:56,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:56,268 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 761 transitions. [2022-01-11 00:01:56,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:56,268 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 761 transitions. [2022-01-11 00:01:56,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-11 00:01:56,270 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:56,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:56,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:01:56,271 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:56,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:56,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1894427015, now seen corresponding path program 1 times [2022-01-11 00:01:56,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:56,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293434462] [2022-01-11 00:01:56,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:56,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:56,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:56,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:56,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293434462] [2022-01-11 00:01:56,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293434462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:56,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:56,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:01:56,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289034489] [2022-01-11 00:01:56,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:56,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:01:56,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:56,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:01:56,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:01:56,455 INFO L87 Difference]: Start difference. First operand 450 states and 761 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:56,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:56,703 INFO L93 Difference]: Finished difference Result 2118 states and 3601 transitions. [2022-01-11 00:01:56,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 00:01:56,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-01-11 00:01:56,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:56,715 INFO L225 Difference]: With dead ends: 2118 [2022-01-11 00:01:56,715 INFO L226 Difference]: Without dead ends: 1692 [2022-01-11 00:01:56,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 00:01:56,727 INFO L933 BasicCegarLoop]: 1445 mSDtfsCounter, 3588 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3588 SdHoareTripleChecker+Valid, 3600 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:56,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3588 Valid, 3600 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:01:56,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2022-01-11 00:01:56,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 450. [2022-01-11 00:01:56,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 1.6926503340757237) internal successors, (760), 449 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:56,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 760 transitions. [2022-01-11 00:01:56,791 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 760 transitions. Word has length 104 [2022-01-11 00:01:56,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:56,792 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 760 transitions. [2022-01-11 00:01:56,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:56,792 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 760 transitions. [2022-01-11 00:01:56,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-11 00:01:56,794 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:56,794 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:56,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:01:56,795 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:56,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:56,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1817381939, now seen corresponding path program 1 times [2022-01-11 00:01:56,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:56,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672161709] [2022-01-11 00:01:56,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:56,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:56,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:56,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:56,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672161709] [2022-01-11 00:01:56,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672161709] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:56,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:56,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:01:56,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419250296] [2022-01-11 00:01:56,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:56,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:01:56,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:56,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:01:56,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:01:56,948 INFO L87 Difference]: Start difference. First operand 450 states and 760 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:56,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:56,997 INFO L93 Difference]: Finished difference Result 885 states and 1498 transitions. [2022-01-11 00:01:56,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:01:56,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-01-11 00:01:56,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:57,001 INFO L225 Difference]: With dead ends: 885 [2022-01-11 00:01:57,001 INFO L226 Difference]: Without dead ends: 464 [2022-01-11 00:01:57,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:01:57,002 INFO L933 BasicCegarLoop]: 774 mSDtfsCounter, 739 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:57,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 796 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:01:57,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2022-01-11 00:01:57,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 450. [2022-01-11 00:01:57,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 1.6904231625835189) internal successors, (759), 449 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:57,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 759 transitions. [2022-01-11 00:01:57,033 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 759 transitions. Word has length 105 [2022-01-11 00:01:57,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:57,035 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 759 transitions. [2022-01-11 00:01:57,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:57,036 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 759 transitions. [2022-01-11 00:01:57,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-11 00:01:57,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:57,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:57,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:01:57,038 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:57,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:57,038 INFO L85 PathProgramCache]: Analyzing trace with hash -193870586, now seen corresponding path program 1 times [2022-01-11 00:01:57,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:57,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564270263] [2022-01-11 00:01:57,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:57,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:57,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:57,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:57,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564270263] [2022-01-11 00:01:57,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564270263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:57,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:57,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:01:57,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527526940] [2022-01-11 00:01:57,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:57,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:01:57,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:57,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:01:57,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:01:57,180 INFO L87 Difference]: Start difference. First operand 450 states and 759 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:57,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:57,371 INFO L93 Difference]: Finished difference Result 1284 states and 2177 transitions. [2022-01-11 00:01:57,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:01:57,372 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-11 00:01:57,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:57,376 INFO L225 Difference]: With dead ends: 1284 [2022-01-11 00:01:57,376 INFO L226 Difference]: Without dead ends: 868 [2022-01-11 00:01:57,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:01:57,378 INFO L933 BasicCegarLoop]: 768 mSDtfsCounter, 3511 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:57,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3511 Valid, 1550 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:01:57,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2022-01-11 00:01:57,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 450. [2022-01-11 00:01:57,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 1.6859688195991092) internal successors, (757), 449 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:57,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 757 transitions. [2022-01-11 00:01:57,413 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 757 transitions. Word has length 106 [2022-01-11 00:01:57,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:57,415 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 757 transitions. [2022-01-11 00:01:57,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:57,415 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 757 transitions. [2022-01-11 00:01:57,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-11 00:01:57,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:57,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:57,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:01:57,417 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:57,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:57,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1683231049, now seen corresponding path program 1 times [2022-01-11 00:01:57,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:57,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427337528] [2022-01-11 00:01:57,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:57,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:57,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:57,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427337528] [2022-01-11 00:01:57,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427337528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:57,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:57,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:01:57,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919481626] [2022-01-11 00:01:57,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:57,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:01:57,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:57,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:01:57,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:01:57,565 INFO L87 Difference]: Start difference. First operand 450 states and 757 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:57,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:57,989 INFO L93 Difference]: Finished difference Result 2540 states and 4227 transitions. [2022-01-11 00:01:57,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 00:01:57,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-11 00:01:57,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:58,000 INFO L225 Difference]: With dead ends: 2540 [2022-01-11 00:01:58,000 INFO L226 Difference]: Without dead ends: 2368 [2022-01-11 00:01:58,002 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 [2022-01-11 00:01:58,003 INFO L933 BasicCegarLoop]: 1052 mSDtfsCounter, 4460 mSDsluCounter, 4223 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4460 SdHoareTripleChecker+Valid, 5275 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:58,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4460 Valid, 5275 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:01:58,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2022-01-11 00:01:58,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 844. [2022-01-11 00:01:58,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 1.6880189798339265) internal successors, (1423), 843 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:58,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1423 transitions. [2022-01-11 00:01:58,110 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1423 transitions. Word has length 108 [2022-01-11 00:01:58,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:58,110 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 1423 transitions. [2022-01-11 00:01:58,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:58,111 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1423 transitions. [2022-01-11 00:01:58,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-11 00:01:58,113 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:58,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:58,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:01:58,114 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:58,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:58,115 INFO L85 PathProgramCache]: Analyzing trace with hash 15759161, now seen corresponding path program 1 times [2022-01-11 00:01:58,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:58,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337637699] [2022-01-11 00:01:58,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:58,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:58,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:58,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:58,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337637699] [2022-01-11 00:01:58,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337637699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:58,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:58,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:01:58,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065246664] [2022-01-11 00:01:58,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:58,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:01:58,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:58,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:01:58,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:01:58,221 INFO L87 Difference]: Start difference. First operand 844 states and 1423 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:58,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:58,444 INFO L93 Difference]: Finished difference Result 2409 states and 4098 transitions. [2022-01-11 00:01:58,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:01:58,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-01-11 00:01:58,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:58,452 INFO L225 Difference]: With dead ends: 2409 [2022-01-11 00:01:58,452 INFO L226 Difference]: Without dead ends: 1602 [2022-01-11 00:01:58,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:01:58,454 INFO L933 BasicCegarLoop]: 1417 mSDtfsCounter, 2208 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2208 SdHoareTripleChecker+Valid, 2127 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:58,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2208 Valid, 2127 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:01:58,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1602 states. [2022-01-11 00:01:58,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1602 to 844. [2022-01-11 00:01:58,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 1.6856465005931198) internal successors, (1421), 843 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:58,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1421 transitions. [2022-01-11 00:01:58,530 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1421 transitions. Word has length 109 [2022-01-11 00:01:58,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:58,530 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 1421 transitions. [2022-01-11 00:01:58,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:58,530 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1421 transitions. [2022-01-11 00:01:58,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 00:01:58,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:58,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:58,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:01:58,533 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:58,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:58,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1129724042, now seen corresponding path program 1 times [2022-01-11 00:01:58,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:58,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633792775] [2022-01-11 00:01:58,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:58,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:58,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:58,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:58,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633792775] [2022-01-11 00:01:58,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633792775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:58,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:58,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:01:58,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935414117] [2022-01-11 00:01:58,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:58,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:01:58,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:58,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:01:58,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:01:58,710 INFO L87 Difference]: Start difference. First operand 844 states and 1421 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:58,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:01:58,864 INFO L93 Difference]: Finished difference Result 1372 states and 2261 transitions. [2022-01-11 00:01:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:01:58,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 00:01:58,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:01:58,870 INFO L225 Difference]: With dead ends: 1372 [2022-01-11 00:01:58,870 INFO L226 Difference]: Without dead ends: 1056 [2022-01-11 00:01:58,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:01:58,876 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 1708 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:01:58,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1708 Valid, 1834 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:01:58,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2022-01-11 00:01:58,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 844. [2022-01-11 00:01:58,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 843 states have (on average 1.6809015421115066) internal successors, (1417), 843 states have internal predecessors, (1417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:58,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1417 transitions. [2022-01-11 00:01:58,953 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1417 transitions. Word has length 110 [2022-01-11 00:01:58,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:01:58,954 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 1417 transitions. [2022-01-11 00:01:58,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:01:58,954 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1417 transitions. [2022-01-11 00:01:58,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 00:01:58,956 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:01:58,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:01:58,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:01:58,957 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:01:58,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:01:58,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1925819981, now seen corresponding path program 1 times [2022-01-11 00:01:58,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:01:58,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053415643] [2022-01-11 00:01:58,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:01:58,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:01:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:01:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:01:59,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:01:59,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053415643] [2022-01-11 00:01:59,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053415643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:01:59,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:01:59,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 00:01:59,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992087031] [2022-01-11 00:01:59,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:01:59,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 00:01:59,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:01:59,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 00:01:59,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:01:59,141 INFO L87 Difference]: Start difference. First operand 844 states and 1417 transitions. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:00,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:02:00,031 INFO L93 Difference]: Finished difference Result 3280 states and 5237 transitions. [2022-01-11 00:02:00,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 00:02:00,031 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 00:02:00,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:02:00,043 INFO L225 Difference]: With dead ends: 3280 [2022-01-11 00:02:00,043 INFO L226 Difference]: Without dead ends: 3006 [2022-01-11 00:02:00,045 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 [2022-01-11 00:02:00,045 INFO L933 BasicCegarLoop]: 890 mSDtfsCounter, 6282 mSDsluCounter, 5385 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6282 SdHoareTripleChecker+Valid, 6275 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:02:00,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6282 Valid, 6275 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:02:00,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3006 states. [2022-01-11 00:02:00,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3006 to 1601. [2022-01-11 00:02:00,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1600 states have (on average 1.694375) internal successors, (2711), 1600 states have internal predecessors, (2711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:00,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2711 transitions. [2022-01-11 00:02:00,231 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2711 transitions. Word has length 110 [2022-01-11 00:02:00,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:02:00,232 INFO L470 AbstractCegarLoop]: Abstraction has 1601 states and 2711 transitions. [2022-01-11 00:02:00,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:00,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2711 transitions. [2022-01-11 00:02:00,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-11 00:02:00,236 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:02:00,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:02:00,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:02:00,237 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:02:00,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:02:00,238 INFO L85 PathProgramCache]: Analyzing trace with hash -978998126, now seen corresponding path program 1 times [2022-01-11 00:02:00,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:02:00,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422132583] [2022-01-11 00:02:00,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:02:00,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:02:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:02:00,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:02:00,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:02:00,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422132583] [2022-01-11 00:02:00,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422132583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:02:00,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:02:00,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:02:00,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881696576] [2022-01-11 00:02:00,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:02:00,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:02:00,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:02:00,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:02:00,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:02:00,356 INFO L87 Difference]: Start difference. First operand 1601 states and 2711 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:00,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:02:00,575 INFO L93 Difference]: Finished difference Result 2052 states and 3397 transitions. [2022-01-11 00:02:00,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:02:00,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-01-11 00:02:00,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:02:00,583 INFO L225 Difference]: With dead ends: 2052 [2022-01-11 00:02:00,583 INFO L226 Difference]: Without dead ends: 1724 [2022-01-11 00:02:00,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:02:00,585 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 688 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1738 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:02:00,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 1738 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:02:00,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2022-01-11 00:02:00,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 1601. [2022-01-11 00:02:00,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1600 states have (on average 1.693125) internal successors, (2709), 1600 states have internal predecessors, (2709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:00,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2709 transitions. [2022-01-11 00:02:00,749 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2709 transitions. Word has length 111 [2022-01-11 00:02:00,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:02:00,749 INFO L470 AbstractCegarLoop]: Abstraction has 1601 states and 2709 transitions. [2022-01-11 00:02:00,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:00,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2709 transitions. [2022-01-11 00:02:00,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-11 00:02:00,753 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:02:00,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:02:00,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:02:00,754 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:02:00,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:02:00,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1206935921, now seen corresponding path program 1 times [2022-01-11 00:02:00,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:02:00,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426023396] [2022-01-11 00:02:00,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:02:00,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:02:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:02:00,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:02:00,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:02:00,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426023396] [2022-01-11 00:02:00,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426023396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:02:00,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:02:00,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:02:00,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237812014] [2022-01-11 00:02:00,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:02:00,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:02:00,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:02:00,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:02:00,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:02:00,925 INFO L87 Difference]: Start difference. First operand 1601 states and 2709 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:01,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:02:01,678 INFO L93 Difference]: Finished difference Result 4442 states and 7145 transitions. [2022-01-11 00:02:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:02:01,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-01-11 00:02:01,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:02:01,689 INFO L225 Difference]: With dead ends: 4442 [2022-01-11 00:02:01,689 INFO L226 Difference]: Without dead ends: 2848 [2022-01-11 00:02:01,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:02:01,694 INFO L933 BasicCegarLoop]: 751 mSDtfsCounter, 2902 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2902 SdHoareTripleChecker+Valid, 2467 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:02:01,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2902 Valid, 2467 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:02:01,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2848 states. [2022-01-11 00:02:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2848 to 1661. [2022-01-11 00:02:01,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1660 states have (on average 1.6825301204819276) internal successors, (2793), 1660 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:01,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2793 transitions. [2022-01-11 00:02:01,937 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2793 transitions. Word has length 111 [2022-01-11 00:02:01,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:02:01,937 INFO L470 AbstractCegarLoop]: Abstraction has 1661 states and 2793 transitions. [2022-01-11 00:02:01,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:01,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2793 transitions. [2022-01-11 00:02:01,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-11 00:02:01,943 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:02:01,943 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:02:01,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:02:01,943 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:02:01,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:02:01,944 INFO L85 PathProgramCache]: Analyzing trace with hash 339794497, now seen corresponding path program 1 times [2022-01-11 00:02:01,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:02:01,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454474934] [2022-01-11 00:02:01,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:02:01,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:02:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:02:02,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:02:02,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:02:02,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454474934] [2022-01-11 00:02:02,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454474934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:02:02,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:02:02,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-11 00:02:02,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819553694] [2022-01-11 00:02:02,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:02:02,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 00:02:02,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:02:02,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 00:02:02,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:02:02,124 INFO L87 Difference]: Start difference. First operand 1661 states and 2793 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:02,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:02:02,585 INFO L93 Difference]: Finished difference Result 2465 states and 4047 transitions. [2022-01-11 00:02:02,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-11 00:02:02,586 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2022-01-11 00:02:02,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:02:02,593 INFO L225 Difference]: With dead ends: 2465 [2022-01-11 00:02:02,593 INFO L226 Difference]: Without dead ends: 1972 [2022-01-11 00:02:02,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2022-01-11 00:02:02,595 INFO L933 BasicCegarLoop]: 737 mSDtfsCounter, 2648 mSDsluCounter, 3718 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2648 SdHoareTripleChecker+Valid, 4455 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:02:02,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2648 Valid, 4455 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:02:02,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2022-01-11 00:02:02,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1593. [2022-01-11 00:02:02,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1593 states, 1592 states have (on average 1.6840452261306533) internal successors, (2681), 1592 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:02,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1593 states to 1593 states and 2681 transitions. [2022-01-11 00:02:02,760 INFO L78 Accepts]: Start accepts. Automaton has 1593 states and 2681 transitions. Word has length 112 [2022-01-11 00:02:02,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:02:02,761 INFO L470 AbstractCegarLoop]: Abstraction has 1593 states and 2681 transitions. [2022-01-11 00:02:02,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 9 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:02,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1593 states and 2681 transitions. [2022-01-11 00:02:02,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-11 00:02:02,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:02:02,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:02:02,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:02:02,765 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:02:02,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:02:02,766 INFO L85 PathProgramCache]: Analyzing trace with hash -951805935, now seen corresponding path program 1 times [2022-01-11 00:02:02,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:02:02,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995778082] [2022-01-11 00:02:02,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:02:02,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:02:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:02:02,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:02:02,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:02:02,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995778082] [2022-01-11 00:02:02,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995778082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:02:02,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:02:02,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:02:02,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554310210] [2022-01-11 00:02:02,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:02:02,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:02:02,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:02:02,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:02:02,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:02:02,882 INFO L87 Difference]: Start difference. First operand 1593 states and 2681 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:03,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:02:03,409 INFO L93 Difference]: Finished difference Result 4097 states and 6731 transitions. [2022-01-11 00:02:03,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:02:03,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-01-11 00:02:03,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:02:03,424 INFO L225 Difference]: With dead ends: 4097 [2022-01-11 00:02:03,424 INFO L226 Difference]: Without dead ends: 3580 [2022-01-11 00:02:03,425 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:02:03,426 INFO L933 BasicCegarLoop]: 870 mSDtfsCounter, 982 mSDsluCounter, 2387 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 3257 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:02:03,426 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [982 Valid, 3257 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:02:03,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3580 states. [2022-01-11 00:02:03,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3580 to 3089. [2022-01-11 00:02:03,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3089 states, 3088 states have (on average 1.6813471502590673) internal successors, (5192), 3088 states have internal predecessors, (5192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:03,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3089 states to 3089 states and 5192 transitions. [2022-01-11 00:02:03,749 INFO L78 Accepts]: Start accepts. Automaton has 3089 states and 5192 transitions. Word has length 115 [2022-01-11 00:02:03,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:02:03,749 INFO L470 AbstractCegarLoop]: Abstraction has 3089 states and 5192 transitions. [2022-01-11 00:02:03,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:03,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3089 states and 5192 transitions. [2022-01-11 00:02:03,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-11 00:02:03,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:02:03,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:02:03,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:02:03,757 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:02:03,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:02:03,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2027738146, now seen corresponding path program 1 times [2022-01-11 00:02:03,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:02:03,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298040447] [2022-01-11 00:02:03,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:02:03,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:02:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:02:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:02:03,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:02:03,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298040447] [2022-01-11 00:02:03,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298040447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:02:03,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:02:03,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 00:02:03,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327784535] [2022-01-11 00:02:03,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:02:03,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 00:02:03,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:02:03,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 00:02:03,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:02:03,906 INFO L87 Difference]: Start difference. First operand 3089 states and 5192 transitions. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:05,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:02:05,567 INFO L93 Difference]: Finished difference Result 11144 states and 17672 transitions. [2022-01-11 00:02:05,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 00:02:05,568 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-01-11 00:02:05,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:02:05,604 INFO L225 Difference]: With dead ends: 11144 [2022-01-11 00:02:05,605 INFO L226 Difference]: Without dead ends: 10143 [2022-01-11 00:02:05,608 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 [2022-01-11 00:02:05,609 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 7163 mSDsluCounter, 4366 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7163 SdHoareTripleChecker+Valid, 5072 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:02:05,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7163 Valid, 5072 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:02:05,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10143 states. [2022-01-11 00:02:06,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10143 to 6093. [2022-01-11 00:02:06,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6093 states, 6092 states have (on average 1.6846684175968483) internal successors, (10263), 6092 states have internal predecessors, (10263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:06,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6093 states to 6093 states and 10263 transitions. [2022-01-11 00:02:06,372 INFO L78 Accepts]: Start accepts. Automaton has 6093 states and 10263 transitions. Word has length 116 [2022-01-11 00:02:06,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:02:06,372 INFO L470 AbstractCegarLoop]: Abstraction has 6093 states and 10263 transitions. [2022-01-11 00:02:06,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:06,373 INFO L276 IsEmpty]: Start isEmpty. Operand 6093 states and 10263 transitions. [2022-01-11 00:02:06,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-11 00:02:06,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:02:06,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:02:06,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:02:06,388 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:02:06,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:02:06,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1398645243, now seen corresponding path program 1 times [2022-01-11 00:02:06,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:02:06,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290486288] [2022-01-11 00:02:06,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:02:06,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:02:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:02:06,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:02:06,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:02:06,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290486288] [2022-01-11 00:02:06,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290486288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:02:06,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:02:06,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:02:06,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455206306] [2022-01-11 00:02:06,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:02:06,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:02:06,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:02:06,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:02:06,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:02:06,562 INFO L87 Difference]: Start difference. First operand 6093 states and 10263 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:08,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:02:08,571 INFO L93 Difference]: Finished difference Result 15140 states and 23993 transitions. [2022-01-11 00:02:08,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 00:02:08,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-01-11 00:02:08,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:02:08,609 INFO L225 Difference]: With dead ends: 15140 [2022-01-11 00:02:08,609 INFO L226 Difference]: Without dead ends: 13091 [2022-01-11 00:02:08,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-11 00:02:08,616 INFO L933 BasicCegarLoop]: 1077 mSDtfsCounter, 1712 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 4456 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:02:08,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1712 Valid, 4456 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:02:08,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13091 states. [2022-01-11 00:02:09,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13091 to 6389. [2022-01-11 00:02:09,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6389 states, 6388 states have (on average 1.6770507201001879) internal successors, (10713), 6388 states have internal predecessors, (10713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:09,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6389 states to 6389 states and 10713 transitions. [2022-01-11 00:02:09,361 INFO L78 Accepts]: Start accepts. Automaton has 6389 states and 10713 transitions. Word has length 116 [2022-01-11 00:02:09,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:02:09,361 INFO L470 AbstractCegarLoop]: Abstraction has 6389 states and 10713 transitions. [2022-01-11 00:02:09,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:09,361 INFO L276 IsEmpty]: Start isEmpty. Operand 6389 states and 10713 transitions. [2022-01-11 00:02:09,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-11 00:02:09,374 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:02:09,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:02:09,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 00:02:09,375 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:02:09,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:02:09,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1026307831, now seen corresponding path program 1 times [2022-01-11 00:02:09,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:02:09,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217491061] [2022-01-11 00:02:09,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:02:09,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:02:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:02:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:02:09,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:02:09,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217491061] [2022-01-11 00:02:09,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217491061] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:02:09,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:02:09,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:02:09,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630030419] [2022-01-11 00:02:09,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:02:09,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:02:09,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:02:09,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:02:09,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:02:09,508 INFO L87 Difference]: Start difference. First operand 6389 states and 10713 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:10,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:02:10,557 INFO L93 Difference]: Finished difference Result 9620 states and 15591 transitions. [2022-01-11 00:02:10,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:02:10,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 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 116 [2022-01-11 00:02:10,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:02:10,575 INFO L225 Difference]: With dead ends: 9620 [2022-01-11 00:02:10,575 INFO L226 Difference]: Without dead ends: 8518 [2022-01-11 00:02:10,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:02:10,578 INFO L933 BasicCegarLoop]: 934 mSDtfsCounter, 1293 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 2663 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:02:10,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 2663 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:02:10,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8518 states. [2022-01-11 00:02:11,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8518 to 6977. [2022-01-11 00:02:11,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6977 states, 6976 states have (on average 1.6635607798165137) internal successors, (11605), 6976 states have internal predecessors, (11605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:11,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6977 states to 6977 states and 11605 transitions. [2022-01-11 00:02:11,316 INFO L78 Accepts]: Start accepts. Automaton has 6977 states and 11605 transitions. Word has length 116 [2022-01-11 00:02:11,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:02:11,317 INFO L470 AbstractCegarLoop]: Abstraction has 6977 states and 11605 transitions. [2022-01-11 00:02:11,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:11,317 INFO L276 IsEmpty]: Start isEmpty. Operand 6977 states and 11605 transitions. [2022-01-11 00:02:11,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-11 00:02:11,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:02:11,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:02:11,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 00:02:11,332 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:02:11,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:02:11,333 INFO L85 PathProgramCache]: Analyzing trace with hash 183914461, now seen corresponding path program 1 times [2022-01-11 00:02:11,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:02:11,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022901708] [2022-01-11 00:02:11,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:02:11,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:02:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:02:11,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:02:11,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:02:11,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022901708] [2022-01-11 00:02:11,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022901708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:02:11,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:02:11,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 00:02:11,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386435105] [2022-01-11 00:02:11,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:02:11,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 00:02:11,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:02:11,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 00:02:11,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:02:11,513 INFO L87 Difference]: Start difference. First operand 6977 states and 11605 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:15,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:02:15,025 INFO L93 Difference]: Finished difference Result 24230 states and 38282 transitions. [2022-01-11 00:02:15,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 00:02:15,026 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2022-01-11 00:02:15,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:02:15,063 INFO L225 Difference]: With dead ends: 24230 [2022-01-11 00:02:15,063 INFO L226 Difference]: Without dead ends: 22077 [2022-01-11 00:02:15,075 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 [2022-01-11 00:02:15,076 INFO L933 BasicCegarLoop]: 744 mSDtfsCounter, 4805 mSDsluCounter, 5282 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4805 SdHoareTripleChecker+Valid, 6026 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:02:15,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4805 Valid, 6026 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:02:15,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22077 states. [2022-01-11 00:02:16,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22077 to 13163. [2022-01-11 00:02:16,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13163 states, 13162 states have (on average 1.6730740009117155) internal successors, (22021), 13162 states have internal predecessors, (22021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:16,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13163 states to 13163 states and 22021 transitions. [2022-01-11 00:02:16,843 INFO L78 Accepts]: Start accepts. Automaton has 13163 states and 22021 transitions. Word has length 117 [2022-01-11 00:02:16,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:02:16,843 INFO L470 AbstractCegarLoop]: Abstraction has 13163 states and 22021 transitions. [2022-01-11 00:02:16,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 8 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:16,844 INFO L276 IsEmpty]: Start isEmpty. Operand 13163 states and 22021 transitions. [2022-01-11 00:02:16,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-11 00:02:16,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:02:16,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:02:16,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 00:02:16,867 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:02:16,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:02:16,868 INFO L85 PathProgramCache]: Analyzing trace with hash -2127953441, now seen corresponding path program 1 times [2022-01-11 00:02:16,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:02:16,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140789517] [2022-01-11 00:02:16,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:02:16,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:02:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:02:16,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:02:16,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:02:16,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140789517] [2022-01-11 00:02:16,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140789517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:02:16,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:02:16,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:02:16,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536672137] [2022-01-11 00:02:16,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:02:16,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:02:16,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:02:16,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:02:16,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:02:16,997 INFO L87 Difference]: Start difference. First operand 13163 states and 22021 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:20,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:02:20,499 INFO L93 Difference]: Finished difference Result 34427 states and 56201 transitions. [2022-01-11 00:02:20,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:02:20,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 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 117 [2022-01-11 00:02:20,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:02:20,556 INFO L225 Difference]: With dead ends: 34427 [2022-01-11 00:02:20,557 INFO L226 Difference]: Without dead ends: 30008 [2022-01-11 00:02:20,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:02:20,572 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 1001 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 3118 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:02:20,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1001 Valid, 3118 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:02:20,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30008 states. [2022-01-11 00:02:23,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30008 to 26029. [2022-01-11 00:02:23,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26029 states, 26028 states have (on average 1.6741201782695558) internal successors, (43574), 26028 states have internal predecessors, (43574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:23,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26029 states to 26029 states and 43574 transitions. [2022-01-11 00:02:23,545 INFO L78 Accepts]: Start accepts. Automaton has 26029 states and 43574 transitions. Word has length 117 [2022-01-11 00:02:23,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:02:23,545 INFO L470 AbstractCegarLoop]: Abstraction has 26029 states and 43574 transitions. [2022-01-11 00:02:23,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 4 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:23,546 INFO L276 IsEmpty]: Start isEmpty. Operand 26029 states and 43574 transitions. [2022-01-11 00:02:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-11 00:02:23,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:02:23,599 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:02:23,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 00:02:23,599 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:02:23,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:02:23,600 INFO L85 PathProgramCache]: Analyzing trace with hash 424228701, now seen corresponding path program 1 times [2022-01-11 00:02:23,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:02:23,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776158777] [2022-01-11 00:02:23,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:02:23,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:02:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:02:23,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:02:23,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:02:23,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776158777] [2022-01-11 00:02:23,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776158777] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:02:23,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:02:23,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 00:02:23,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931357039] [2022-01-11 00:02:23,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:02:23,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 00:02:23,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:02:23,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 00:02:23,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:02:23,792 INFO L87 Difference]: Start difference. First operand 26029 states and 43574 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:36,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:02:36,168 INFO L93 Difference]: Finished difference Result 86420 states and 137618 transitions. [2022-01-11 00:02:36,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 00:02:36,169 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2022-01-11 00:02:36,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:02:36,301 INFO L225 Difference]: With dead ends: 86420 [2022-01-11 00:02:36,301 INFO L226 Difference]: Without dead ends: 78419 [2022-01-11 00:02:36,334 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 [2022-01-11 00:02:36,334 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 7135 mSDsluCounter, 4368 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7135 SdHoareTripleChecker+Valid, 5079 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:02:36,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7135 Valid, 5079 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:02:36,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78419 states. [2022-01-11 00:02:42,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78419 to 50712. [2022-01-11 00:02:42,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50712 states, 50711 states have (on average 1.6779791366764607) internal successors, (85092), 50711 states have internal predecessors, (85092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:42,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50712 states to 50712 states and 85092 transitions. [2022-01-11 00:02:42,300 INFO L78 Accepts]: Start accepts. Automaton has 50712 states and 85092 transitions. Word has length 118 [2022-01-11 00:02:42,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:02:42,301 INFO L470 AbstractCegarLoop]: Abstraction has 50712 states and 85092 transitions. [2022-01-11 00:02:42,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:02:42,301 INFO L276 IsEmpty]: Start isEmpty. Operand 50712 states and 85092 transitions. [2022-01-11 00:02:42,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-01-11 00:02:42,369 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:02:42,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:02:42,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 00:02:42,370 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:02:42,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:02:42,370 INFO L85 PathProgramCache]: Analyzing trace with hash 2086084667, now seen corresponding path program 1 times [2022-01-11 00:02:42,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:02:42,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080700023] [2022-01-11 00:02:42,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:02:42,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:02:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:02:42,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:02:42,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:02:42,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080700023] [2022-01-11 00:02:42,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080700023] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:02:42,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:02:42,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 00:02:42,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642825126] [2022-01-11 00:02:42,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:02:42,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 00:02:42,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:02:42,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 00:02:42,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:02:42,528 INFO L87 Difference]: Start difference. First operand 50712 states and 85092 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)