/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec8_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:20:53,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:20:53,892 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:20:53,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:20:53,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:20:53,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:20:53,916 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:20:53,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:20:53,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:20:53,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:20:53,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:20:53,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:20:53,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:20:53,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:20:53,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:20:53,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:20:53,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:20:53,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:20:53,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:20:53,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:20:53,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:20:53,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:20:53,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:20:53,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:20:53,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:20:53,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:20:53,939 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:20:53,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:20:53,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:20:53,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:20:53,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:20:53,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:20:53,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:20:53,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:20:53,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:20:53,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:20:53,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:20:53,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:20:53,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:20:53,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:20:53,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:20:53,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:20:54,009 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:20:54,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:20:54,011 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:20:54,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:20:54,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:20:54,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:20:54,012 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:20:54,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:20:54,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:20:54,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:20:54,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:20:54,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:20:54,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:20:54,013 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:20:54,013 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:20:54,013 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:20:54,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:20:54,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:20:54,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:20:54,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:20:54,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:20:54,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:20:54,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:20:54,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:20:54,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:20:54,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:20:54,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:20:54,015 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:20:54,015 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:20:54,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:20:54,015 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:20:54,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:20:54,016 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:20:54,016 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:20:54,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:20:54,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:20:54,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:20:54,259 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:20:54,259 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:20:54,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product33.cil.c [2022-01-10 12:20:54,311 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18db3f856/854bc373fa7c4d37b5523340d10cca52/FLAG059cfb257 [2022-01-10 12:20:54,731 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:20:54,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product33.cil.c [2022-01-10 12:20:54,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18db3f856/854bc373fa7c4d37b5523340d10cca52/FLAG059cfb257 [2022-01-10 12:20:54,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18db3f856/854bc373fa7c4d37b5523340d10cca52 [2022-01-10 12:20:54,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:20:54,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:20:54,769 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:20:54,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:20:54,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:20:54,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:20:54" (1/1) ... [2022-01-10 12:20:54,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e25800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:54, skipping insertion in model container [2022-01-10 12:20:54,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:20:54" (1/1) ... [2022-01-10 12:20:54,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:20:54,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:20:55,058 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_spec8_product33.cil.c[11621,11634] [2022-01-10 12:20:55,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:20:55,263 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:20:55,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:20:55,306 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_spec8_product33.cil.c[11621,11634] [2022-01-10 12:20:55,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:20:55,341 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:20:55,370 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_spec8_product33.cil.c[11621,11634] [2022-01-10 12:20:55,406 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:20:55,427 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:20:55,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:55 WrapperNode [2022-01-10 12:20:55,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:20:55,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:20:55,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:20:55,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:20:55,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:55" (1/1) ... [2022-01-10 12:20:55,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:55" (1/1) ... [2022-01-10 12:20:55,525 INFO L137 Inliner]: procedures = 137, calls = 233, calls flagged for inlining = 138, calls inlined = 203, statements flattened = 2972 [2022-01-10 12:20:55,525 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:20:55,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:20:55,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:20:55,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:20:55,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:55" (1/1) ... [2022-01-10 12:20:55,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:55" (1/1) ... [2022-01-10 12:20:55,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:55" (1/1) ... [2022-01-10 12:20:55,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:55" (1/1) ... [2022-01-10 12:20:55,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:55" (1/1) ... [2022-01-10 12:20:55,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:55" (1/1) ... [2022-01-10 12:20:55,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:55" (1/1) ... [2022-01-10 12:20:55,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:20:55,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:20:55,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:20:55,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:20:55,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:55" (1/1) ... [2022-01-10 12:20:55,617 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:20:55,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:20:55,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:20:55,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:20:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:20:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:20:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:20:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:20:55,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:20:55,860 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:20:55,861 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:20:56,993 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:20:57,004 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:20:57,004 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:20:57,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:20:57 BoogieIcfgContainer [2022-01-10 12:20:57,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:20:57,011 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:20:57,011 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:20:57,012 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:20:57,014 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:20:57" (1/1) ... [2022-01-10 12:20:57,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:20:57 BasicIcfg [2022-01-10 12:20:57,310 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:20:57,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:20:57,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:20:57,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:20:57,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:20:54" (1/4) ... [2022-01-10 12:20:57,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459455d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:20:57, skipping insertion in model container [2022-01-10 12:20:57,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:20:55" (2/4) ... [2022-01-10 12:20:57,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459455d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:20:57, skipping insertion in model container [2022-01-10 12:20:57,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:20:57" (3/4) ... [2022-01-10 12:20:57,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459455d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:20:57, skipping insertion in model container [2022-01-10 12:20:57,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:20:57" (4/4) ... [2022-01-10 12:20:57,316 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec8_product33.cil.cTransformedIcfg [2022-01-10 12:20:57,321 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:20:57,321 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 12:20:57,363 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:20:57,368 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:20:57,368 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 12:20:57,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 649 states, 646 states have (on average 1.6702786377708978) internal successors, (1079), 648 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:57,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 12:20:57,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:57,399 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] [2022-01-10 12:20:57,400 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:57,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:57,403 INFO L85 PathProgramCache]: Analyzing trace with hash -397606397, now seen corresponding path program 1 times [2022-01-10 12:20:57,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:57,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302176215] [2022-01-10 12:20:57,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:57,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:57,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:57,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302176215] [2022-01-10 12:20:57,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302176215] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:57,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:57,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:20:57,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481004015] [2022-01-10 12:20:57,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:57,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:20:57,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:57,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:20:57,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:20:57,706 INFO L87 Difference]: Start difference. First operand has 649 states, 646 states have (on average 1.6702786377708978) internal successors, (1079), 648 states have internal predecessors, (1079), 0 states have call successors, (0), 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) [2022-01-10 12:20:57,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:57,764 INFO L93 Difference]: Finished difference Result 1032 states and 1690 transitions. [2022-01-10 12:20:57,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:20:57,766 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 [2022-01-10 12:20:57,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:57,781 INFO L225 Difference]: With dead ends: 1032 [2022-01-10 12:20:57,782 INFO L226 Difference]: Without dead ends: 506 [2022-01-10 12:20:57,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:20:57,791 INFO L933 BasicCegarLoop]: 1073 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, 1073 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:57,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:57,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-01-10 12:20:57,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2022-01-10 12:20:57,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 504 states have (on average 1.6865079365079365) internal successors, (850), 505 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:57,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 850 transitions. [2022-01-10 12:20:57,857 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 850 transitions. Word has length 52 [2022-01-10 12:20:57,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:57,857 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 850 transitions. [2022-01-10 12:20:57,858 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) [2022-01-10 12:20:57,858 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 850 transitions. [2022-01-10 12:20:57,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 12:20:57,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:57,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:20:57,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:20:57,860 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:57,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:57,861 INFO L85 PathProgramCache]: Analyzing trace with hash -399247562, now seen corresponding path program 1 times [2022-01-10 12:20:57,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:57,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595667168] [2022-01-10 12:20:57,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:57,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:58,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:58,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:58,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595667168] [2022-01-10 12:20:58,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595667168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:58,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:58,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:20:58,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45776998] [2022-01-10 12:20:58,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:58,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:20:58,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:58,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:20:58,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:20:58,053 INFO L87 Difference]: Start difference. First operand 506 states and 850 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) [2022-01-10 12:20:58,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:58,101 INFO L93 Difference]: Finished difference Result 693 states and 1146 transitions. [2022-01-10 12:20:58,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:20:58,101 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 [2022-01-10 12:20:58,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:58,103 INFO L225 Difference]: With dead ends: 693 [2022-01-10 12:20:58,103 INFO L226 Difference]: Without dead ends: 500 [2022-01-10 12:20:58,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:20:58,105 INFO L933 BasicCegarLoop]: 840 mSDtfsCounter, 507 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1124 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 [2022-01-10 12:20:58,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 1124 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:58,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-01-10 12:20:58,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2022-01-10 12:20:58,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.685370741482966) internal successors, (841), 499 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:58,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 841 transitions. [2022-01-10 12:20:58,128 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 841 transitions. Word has length 53 [2022-01-10 12:20:58,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:58,128 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 841 transitions. [2022-01-10 12:20:58,129 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) [2022-01-10 12:20:58,129 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 841 transitions. [2022-01-10 12:20:58,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 12:20:58,132 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:58,132 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] [2022-01-10 12:20:58,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:20:58,133 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:58,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:58,133 INFO L85 PathProgramCache]: Analyzing trace with hash -529433967, now seen corresponding path program 1 times [2022-01-10 12:20:58,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:58,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995657486] [2022-01-10 12:20:58,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:58,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:58,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:58,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995657486] [2022-01-10 12:20:58,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995657486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:58,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:58,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:20:58,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890927246] [2022-01-10 12:20:58,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:58,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:20:58,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:58,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:20:58,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:20:58,326 INFO L87 Difference]: Start difference. First operand 500 states and 841 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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) [2022-01-10 12:20:58,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:58,387 INFO L93 Difference]: Finished difference Result 981 states and 1654 transitions. [2022-01-10 12:20:58,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:20:58,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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 [2022-01-10 12:20:58,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:58,389 INFO L225 Difference]: With dead ends: 981 [2022-01-10 12:20:58,390 INFO L226 Difference]: Without dead ends: 500 [2022-01-10 12:20:58,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:20:58,395 INFO L933 BasicCegarLoop]: 821 mSDtfsCounter, 816 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:58,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 834 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:58,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-01-10 12:20:58,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2022-01-10 12:20:58,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.6813627254509018) internal successors, (839), 499 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 839 transitions. [2022-01-10 12:20:58,417 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 839 transitions. Word has length 106 [2022-01-10 12:20:58,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:58,418 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 839 transitions. [2022-01-10 12:20:58,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 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) [2022-01-10 12:20:58,418 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 839 transitions. [2022-01-10 12:20:58,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 12:20:58,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:58,422 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] [2022-01-10 12:20:58,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:20:58,422 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:58,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:58,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1263422417, now seen corresponding path program 1 times [2022-01-10 12:20:58,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:58,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264086127] [2022-01-10 12:20:58,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:58,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:58,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:58,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:58,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264086127] [2022-01-10 12:20:58,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264086127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:58,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:58,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:20:58,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866489167] [2022-01-10 12:20:58,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:58,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:20:58,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:58,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:20:58,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:58,545 INFO L87 Difference]: Start difference. First operand 500 states and 839 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 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) [2022-01-10 12:20:58,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:58,724 INFO L93 Difference]: Finished difference Result 2368 states and 3991 transitions. [2022-01-10 12:20:58,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:20:58,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 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 [2022-01-10 12:20:58,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:58,731 INFO L225 Difference]: With dead ends: 2368 [2022-01-10 12:20:58,731 INFO L226 Difference]: Without dead ends: 1892 [2022-01-10 12:20:58,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:20:58,733 INFO L933 BasicCegarLoop]: 1601 mSDtfsCounter, 3978 mSDsluCounter, 2389 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3978 SdHoareTripleChecker+Valid, 3990 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:58,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3978 Valid, 3990 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:20:58,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2022-01-10 12:20:58,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 500. [2022-01-10 12:20:58,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.6793587174348696) internal successors, (838), 499 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:58,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 838 transitions. [2022-01-10 12:20:58,760 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 838 transitions. Word has length 108 [2022-01-10 12:20:58,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:58,761 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 838 transitions. [2022-01-10 12:20:58,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 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) [2022-01-10 12:20:58,761 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 838 transitions. [2022-01-10 12:20:58,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 12:20:58,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:58,791 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] [2022-01-10 12:20:58,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:20:58,792 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:58,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:58,792 INFO L85 PathProgramCache]: Analyzing trace with hash -199860513, now seen corresponding path program 1 times [2022-01-10 12:20:58,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:58,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125115395] [2022-01-10 12:20:58,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:58,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:58,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:58,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:58,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:58,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125115395] [2022-01-10 12:20:58,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125115395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:58,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:58,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:20:58,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747230946] [2022-01-10 12:20:58,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:58,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:20:58,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:58,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:20:58,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:20:58,884 INFO L87 Difference]: Start difference. First operand 500 states and 838 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 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) [2022-01-10 12:20:58,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:58,923 INFO L93 Difference]: Finished difference Result 985 states and 1654 transitions. [2022-01-10 12:20:58,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:20:58,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 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 [2022-01-10 12:20:58,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:58,925 INFO L225 Difference]: With dead ends: 985 [2022-01-10 12:20:58,925 INFO L226 Difference]: Without dead ends: 514 [2022-01-10 12:20:58,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:20:58,926 INFO L933 BasicCegarLoop]: 852 mSDtfsCounter, 817 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:58,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 874 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:20:58,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-01-10 12:20:58,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 500. [2022-01-10 12:20:58,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.6773547094188377) internal successors, (837), 499 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:58,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 837 transitions. [2022-01-10 12:20:58,948 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 837 transitions. Word has length 109 [2022-01-10 12:20:58,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:58,949 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 837 transitions. [2022-01-10 12:20:58,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 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) [2022-01-10 12:20:58,949 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 837 transitions. [2022-01-10 12:20:58,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 12:20:58,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:58,950 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] [2022-01-10 12:20:58,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:20:58,950 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:58,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:58,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1813357552, now seen corresponding path program 1 times [2022-01-10 12:20:58,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:58,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788553969] [2022-01-10 12:20:58,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:58,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:59,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:59,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:59,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788553969] [2022-01-10 12:20:59,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788553969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:59,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:59,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:20:59,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593831829] [2022-01-10 12:20:59,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:59,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:20:59,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:59,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:20:59,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:20:59,039 INFO L87 Difference]: Start difference. First operand 500 states and 837 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) [2022-01-10 12:20:59,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:59,180 INFO L93 Difference]: Finished difference Result 1434 states and 2411 transitions. [2022-01-10 12:20:59,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:20:59,181 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 [2022-01-10 12:20:59,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:20:59,184 INFO L225 Difference]: With dead ends: 1434 [2022-01-10 12:20:59,185 INFO L226 Difference]: Without dead ends: 968 [2022-01-10 12:20:59,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:20:59,187 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 3901 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3901 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:20:59,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3901 Valid, 1706 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:20:59,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2022-01-10 12:20:59,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 500. [2022-01-10 12:20:59,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.6733466933867736) internal successors, (835), 499 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:20:59,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 835 transitions. [2022-01-10 12:20:59,239 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 835 transitions. Word has length 110 [2022-01-10 12:20:59,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:20:59,239 INFO L470 AbstractCegarLoop]: Abstraction has 500 states and 835 transitions. [2022-01-10 12:20:59,239 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) [2022-01-10 12:20:59,239 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 835 transitions. [2022-01-10 12:20:59,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 12:20:59,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:20:59,241 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] [2022-01-10 12:20:59,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:20:59,241 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:20:59,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:20:59,241 INFO L85 PathProgramCache]: Analyzing trace with hash -24016109, now seen corresponding path program 1 times [2022-01-10 12:20:59,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:20:59,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371614735] [2022-01-10 12:20:59,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:20:59,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:20:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:20:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:20:59,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:20:59,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371614735] [2022-01-10 12:20:59,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371614735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:20:59,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:20:59,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:20:59,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271467965] [2022-01-10 12:20:59,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:20:59,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:20:59,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:20:59,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:20:59,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:20:59,396 INFO L87 Difference]: Start difference. First operand 500 states and 835 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 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) [2022-01-10 12:20:59,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:20:59,993 INFO L93 Difference]: Finished difference Result 2281 states and 3653 transitions. [2022-01-10 12:20:59,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:20:59,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 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 [2022-01-10 12:20:59,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:00,000 INFO L225 Difference]: With dead ends: 2281 [2022-01-10 12:21:00,000 INFO L226 Difference]: Without dead ends: 2077 [2022-01-10 12:21:00,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:21:00,002 INFO L933 BasicCegarLoop]: 1025 mSDtfsCounter, 6008 mSDsluCounter, 6833 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6008 SdHoareTripleChecker+Valid, 7858 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:00,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6008 Valid, 7858 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:21:00,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2022-01-10 12:21:00,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 934. [2022-01-10 12:21:00,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 933 states have (on average 1.684887459807074) internal successors, (1572), 933 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:00,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1572 transitions. [2022-01-10 12:21:00,089 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1572 transitions. Word has length 112 [2022-01-10 12:21:00,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:00,090 INFO L470 AbstractCegarLoop]: Abstraction has 934 states and 1572 transitions. [2022-01-10 12:21:00,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 8 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) [2022-01-10 12:21:00,090 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1572 transitions. [2022-01-10 12:21:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 12:21:00,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:00,092 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] [2022-01-10 12:21:00,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:21:00,092 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:00,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:00,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1723161026, now seen corresponding path program 1 times [2022-01-10 12:21:00,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:00,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990197528] [2022-01-10 12:21:00,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:00,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:00,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:00,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990197528] [2022-01-10 12:21:00,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990197528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:00,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:00,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:21:00,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469297278] [2022-01-10 12:21:00,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:00,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:21:00,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:00,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:21:00,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:21:00,169 INFO L87 Difference]: Start difference. First operand 934 states and 1572 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:00,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:00,242 INFO L93 Difference]: Finished difference Result 1303 states and 2146 transitions. [2022-01-10 12:21:00,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:21:00,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-01-10 12:21:00,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:00,246 INFO L225 Difference]: With dead ends: 1303 [2022-01-10 12:21:00,247 INFO L226 Difference]: Without dead ends: 1073 [2022-01-10 12:21:00,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:21:00,248 INFO L933 BasicCegarLoop]: 829 mSDtfsCounter, 893 mSDsluCounter, 1076 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:00,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [893 Valid, 1905 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:21:00,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2022-01-10 12:21:00,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 934. [2022-01-10 12:21:00,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 933 states have (on average 1.6838156484458735) internal successors, (1571), 933 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:00,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1571 transitions. [2022-01-10 12:21:00,296 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1571 transitions. Word has length 113 [2022-01-10 12:21:00,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:00,296 INFO L470 AbstractCegarLoop]: Abstraction has 934 states and 1571 transitions. [2022-01-10 12:21:00,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:00,296 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1571 transitions. [2022-01-10 12:21:00,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 12:21:00,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:00,298 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] [2022-01-10 12:21:00,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:21:00,298 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:00,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:00,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1462991071, now seen corresponding path program 1 times [2022-01-10 12:21:00,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:00,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962758009] [2022-01-10 12:21:00,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:00,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:00,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:00,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:00,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962758009] [2022-01-10 12:21:00,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962758009] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:00,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:00,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:21:00,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057914097] [2022-01-10 12:21:00,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:00,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:21:00,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:00,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:21:00,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:21:00,413 INFO L87 Difference]: Start difference. First operand 934 states and 1571 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:00,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:00,752 INFO L93 Difference]: Finished difference Result 3141 states and 5023 transitions. [2022-01-10 12:21:00,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:21:00,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-01-10 12:21:00,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:00,760 INFO L225 Difference]: With dead ends: 3141 [2022-01-10 12:21:00,760 INFO L226 Difference]: Without dead ends: 1895 [2022-01-10 12:21:00,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:21:00,766 INFO L933 BasicCegarLoop]: 829 mSDtfsCounter, 3562 mSDsluCounter, 2110 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3562 SdHoareTripleChecker+Valid, 2939 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:00,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3562 Valid, 2939 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:21:00,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2022-01-10 12:21:00,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 964. [2022-01-10 12:21:00,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 963 states have (on average 1.6749740394600208) internal successors, (1613), 963 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:00,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1613 transitions. [2022-01-10 12:21:00,864 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1613 transitions. Word has length 113 [2022-01-10 12:21:00,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:00,865 INFO L470 AbstractCegarLoop]: Abstraction has 964 states and 1613 transitions. [2022-01-10 12:21:00,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:00,865 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1613 transitions. [2022-01-10 12:21:00,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 12:21:00,866 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:00,867 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] [2022-01-10 12:21:00,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:21:00,867 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:00,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:00,867 INFO L85 PathProgramCache]: Analyzing trace with hash 137912101, now seen corresponding path program 1 times [2022-01-10 12:21:00,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:00,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699467297] [2022-01-10 12:21:00,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:00,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:00,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:00,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:00,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699467297] [2022-01-10 12:21:00,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699467297] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:00,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:00,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:21:00,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395210178] [2022-01-10 12:21:00,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:00,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:21:00,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:00,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:21:00,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:21:00,963 INFO L87 Difference]: Start difference. First operand 964 states and 1613 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:01,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:01,557 INFO L93 Difference]: Finished difference Result 6060 states and 9933 transitions. [2022-01-10 12:21:01,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:21:01,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-01-10 12:21:01,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:01,574 INFO L225 Difference]: With dead ends: 6060 [2022-01-10 12:21:01,574 INFO L226 Difference]: Without dead ends: 5624 [2022-01-10 12:21:01,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:21:01,576 INFO L933 BasicCegarLoop]: 1197 mSDtfsCounter, 5318 mSDsluCounter, 4812 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5318 SdHoareTripleChecker+Valid, 6009 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 [2022-01-10 12:21:01,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5318 Valid, 6009 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:21:01,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5624 states. [2022-01-10 12:21:01,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5624 to 1861. [2022-01-10 12:21:01,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1860 states have (on average 1.674731182795699) internal successors, (3115), 1860 states have internal predecessors, (3115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:01,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 3115 transitions. [2022-01-10 12:21:01,747 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 3115 transitions. Word has length 114 [2022-01-10 12:21:01,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:01,747 INFO L470 AbstractCegarLoop]: Abstraction has 1861 states and 3115 transitions. [2022-01-10 12:21:01,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:01,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 3115 transitions. [2022-01-10 12:21:01,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 12:21:01,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:01,750 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] [2022-01-10 12:21:01,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:21:01,751 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:01,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:01,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1420581385, now seen corresponding path program 1 times [2022-01-10 12:21:01,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:01,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468740551] [2022-01-10 12:21:01,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:01,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:01,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:01,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:01,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468740551] [2022-01-10 12:21:01,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468740551] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:01,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:01,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:21:01,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438353552] [2022-01-10 12:21:01,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:01,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:21:01,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:01,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:21:01,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:21:01,828 INFO L87 Difference]: Start difference. First operand 1861 states and 3115 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 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) [2022-01-10 12:21:02,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:02,139 INFO L93 Difference]: Finished difference Result 5434 states and 9130 transitions. [2022-01-10 12:21:02,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:21:02,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 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 [2022-01-10 12:21:02,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:02,149 INFO L225 Difference]: With dead ends: 5434 [2022-01-10 12:21:02,149 INFO L226 Difference]: Without dead ends: 3610 [2022-01-10 12:21:02,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:21:02,153 INFO L933 BasicCegarLoop]: 1569 mSDtfsCounter, 2436 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2436 SdHoareTripleChecker+Valid, 2355 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:02,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2436 Valid, 2355 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:21:02,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3610 states. [2022-01-10 12:21:02,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3610 to 1861. [2022-01-10 12:21:02,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1860 states have (on average 1.6736559139784946) internal successors, (3113), 1860 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 3113 transitions. [2022-01-10 12:21:02,304 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 3113 transitions. Word has length 115 [2022-01-10 12:21:02,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:02,304 INFO L470 AbstractCegarLoop]: Abstraction has 1861 states and 3113 transitions. [2022-01-10 12:21:02,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 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) [2022-01-10 12:21:02,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 3113 transitions. [2022-01-10 12:21:02,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 12:21:02,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:02,308 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] [2022-01-10 12:21:02,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:21:02,308 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:02,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:02,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1892009816, now seen corresponding path program 1 times [2022-01-10 12:21:02,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:02,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226921285] [2022-01-10 12:21:02,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:02,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:02,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:02,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:02,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226921285] [2022-01-10 12:21:02,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226921285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:02,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:02,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:21:02,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065045502] [2022-01-10 12:21:02,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:02,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:21:02,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:02,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:21:02,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:21:02,395 INFO L87 Difference]: Start difference. First operand 1861 states and 3113 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 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) [2022-01-10 12:21:02,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:02,632 INFO L93 Difference]: Finished difference Result 3281 states and 5343 transitions. [2022-01-10 12:21:02,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:21:02,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 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 [2022-01-10 12:21:02,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:02,641 INFO L225 Difference]: With dead ends: 3281 [2022-01-10 12:21:02,641 INFO L226 Difference]: Without dead ends: 2434 [2022-01-10 12:21:02,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:21:02,643 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 2060 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2060 SdHoareTripleChecker+Valid, 1995 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 [2022-01-10 12:21:02,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2060 Valid, 1995 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:21:02,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2434 states. [2022-01-10 12:21:02,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2434 to 1861. [2022-01-10 12:21:02,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1861 states, 1860 states have (on average 1.6693548387096775) internal successors, (3105), 1860 states have internal predecessors, (3105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:02,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1861 states to 1861 states and 3105 transitions. [2022-01-10 12:21:02,813 INFO L78 Accepts]: Start accepts. Automaton has 1861 states and 3105 transitions. Word has length 116 [2022-01-10 12:21:02,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:02,813 INFO L470 AbstractCegarLoop]: Abstraction has 1861 states and 3105 transitions. [2022-01-10 12:21:02,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 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) [2022-01-10 12:21:02,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1861 states and 3105 transitions. [2022-01-10 12:21:02,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 12:21:02,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:02,817 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] [2022-01-10 12:21:02,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:21:02,817 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:02,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:02,817 INFO L85 PathProgramCache]: Analyzing trace with hash 2042611049, now seen corresponding path program 1 times [2022-01-10 12:21:02,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:02,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153648203] [2022-01-10 12:21:02,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:02,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:02,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:02,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:02,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153648203] [2022-01-10 12:21:02,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153648203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:02,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:02,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 12:21:02,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246662104] [2022-01-10 12:21:02,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:02,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:21:02,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:02,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:21:02,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:21:02,951 INFO L87 Difference]: Start difference. First operand 1861 states and 3105 transitions. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 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) [2022-01-10 12:21:03,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:03,399 INFO L93 Difference]: Finished difference Result 3009 states and 4887 transitions. [2022-01-10 12:21:03,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 12:21:03,400 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 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 [2022-01-10 12:21:03,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:03,418 INFO L225 Difference]: With dead ends: 3009 [2022-01-10 12:21:03,419 INFO L226 Difference]: Without dead ends: 2336 [2022-01-10 12:21:03,420 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 [2022-01-10 12:21:03,421 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 3500 mSDsluCounter, 3834 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3500 SdHoareTripleChecker+Valid, 4649 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:03,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3500 Valid, 4649 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:21:03,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2022-01-10 12:21:03,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1793. [2022-01-10 12:21:03,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1792 states have (on average 1.6702008928571428) internal successors, (2993), 1792 states have internal predecessors, (2993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:03,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2993 transitions. [2022-01-10 12:21:03,583 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2993 transitions. Word has length 116 [2022-01-10 12:21:03,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:03,583 INFO L470 AbstractCegarLoop]: Abstraction has 1793 states and 2993 transitions. [2022-01-10 12:21:03,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 9 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) [2022-01-10 12:21:03,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2993 transitions. [2022-01-10 12:21:03,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-01-10 12:21:03,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:03,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:21:03,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:21:03,588 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:03,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:03,588 INFO L85 PathProgramCache]: Analyzing trace with hash 99376637, now seen corresponding path program 1 times [2022-01-10 12:21:03,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:03,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513533779] [2022-01-10 12:21:03,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:03,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:03,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:03,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:03,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513533779] [2022-01-10 12:21:03,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513533779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:03,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:03,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:21:03,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244363391] [2022-01-10 12:21:03,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:03,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:21:03,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:03,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:21:03,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:21:03,693 INFO L87 Difference]: Start difference. First operand 1793 states and 2993 transitions. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:04,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:04,164 INFO L93 Difference]: Finished difference Result 5037 states and 8195 transitions. [2022-01-10 12:21:04,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:21:04,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2022-01-10 12:21:04,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:04,172 INFO L225 Difference]: With dead ends: 5037 [2022-01-10 12:21:04,172 INFO L226 Difference]: Without dead ends: 4340 [2022-01-10 12:21:04,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:21:04,173 INFO L933 BasicCegarLoop]: 1018 mSDtfsCounter, 1200 mSDsluCounter, 2761 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 3779 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 [2022-01-10 12:21:04,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1200 Valid, 3779 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:21:04,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4340 states. [2022-01-10 12:21:04,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4340 to 3489. [2022-01-10 12:21:04,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3489 states, 3488 states have (on average 1.6674311926605505) internal successors, (5816), 3488 states have internal predecessors, (5816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:04,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3489 states to 3489 states and 5816 transitions. [2022-01-10 12:21:04,452 INFO L78 Accepts]: Start accepts. Automaton has 3489 states and 5816 transitions. Word has length 119 [2022-01-10 12:21:04,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:04,453 INFO L470 AbstractCegarLoop]: Abstraction has 3489 states and 5816 transitions. [2022-01-10 12:21:04,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:04,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3489 states and 5816 transitions. [2022-01-10 12:21:04,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 12:21:04,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:04,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:21:04,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:21:04,458 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:04,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:04,458 INFO L85 PathProgramCache]: Analyzing trace with hash -2145575318, now seen corresponding path program 1 times [2022-01-10 12:21:04,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:04,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540356107] [2022-01-10 12:21:04,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:04,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:04,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:04,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540356107] [2022-01-10 12:21:04,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540356107] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:04,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:04,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:21:04,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829724408] [2022-01-10 12:21:04,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:04,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:21:04,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:04,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:21:04,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:21:04,559 INFO L87 Difference]: Start difference. First operand 3489 states and 5816 transitions. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:06,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:06,438 INFO L93 Difference]: Finished difference Result 14048 states and 22216 transitions. [2022-01-10 12:21:06,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:21:06,439 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2022-01-10 12:21:06,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:06,465 INFO L225 Difference]: With dead ends: 14048 [2022-01-10 12:21:06,465 INFO L226 Difference]: Without dead ends: 12687 [2022-01-10 12:21:06,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:21:06,471 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 8494 mSDsluCounter, 5000 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8494 SdHoareTripleChecker+Valid, 5837 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:06,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8494 Valid, 5837 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:21:06,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12687 states. [2022-01-10 12:21:07,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12687 to 6893. [2022-01-10 12:21:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6893 states, 6892 states have (on average 1.6701973302379571) internal successors, (11511), 6892 states have internal predecessors, (11511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:07,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6893 states to 6893 states and 11511 transitions. [2022-01-10 12:21:07,121 INFO L78 Accepts]: Start accepts. Automaton has 6893 states and 11511 transitions. Word has length 120 [2022-01-10 12:21:07,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:07,122 INFO L470 AbstractCegarLoop]: Abstraction has 6893 states and 11511 transitions. [2022-01-10 12:21:07,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 8 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:07,122 INFO L276 IsEmpty]: Start isEmpty. Operand 6893 states and 11511 transitions. [2022-01-10 12:21:07,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 12:21:07,141 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:07,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:21:07,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:21:07,141 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:07,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:07,141 INFO L85 PathProgramCache]: Analyzing trace with hash 2119051085, now seen corresponding path program 1 times [2022-01-10 12:21:07,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:07,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209707684] [2022-01-10 12:21:07,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:07,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:07,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:07,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:07,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209707684] [2022-01-10 12:21:07,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209707684] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:07,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:07,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:21:07,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416867728] [2022-01-10 12:21:07,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:07,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:21:07,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:07,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:21:07,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:21:07,262 INFO L87 Difference]: Start difference. First operand 6893 states and 11511 transitions. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:09,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:09,697 INFO L93 Difference]: Finished difference Result 20260 states and 31961 transitions. [2022-01-10 12:21:09,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 12:21:09,698 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2022-01-10 12:21:09,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:09,732 INFO L225 Difference]: With dead ends: 20260 [2022-01-10 12:21:09,732 INFO L226 Difference]: Without dead ends: 17491 [2022-01-10 12:21:09,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-10 12:21:09,740 INFO L933 BasicCegarLoop]: 1295 mSDtfsCounter, 2482 mSDsluCounter, 4041 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2482 SdHoareTripleChecker+Valid, 5336 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:09,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2482 Valid, 5336 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:21:09,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17491 states. [2022-01-10 12:21:10,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17491 to 7189. [2022-01-10 12:21:10,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7189 states, 7188 states have (on average 1.6640233722871451) internal successors, (11961), 7188 states have internal predecessors, (11961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:10,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7189 states to 7189 states and 11961 transitions. [2022-01-10 12:21:10,491 INFO L78 Accepts]: Start accepts. Automaton has 7189 states and 11961 transitions. Word has length 120 [2022-01-10 12:21:10,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:10,491 INFO L470 AbstractCegarLoop]: Abstraction has 7189 states and 11961 transitions. [2022-01-10 12:21:10,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:10,491 INFO L276 IsEmpty]: Start isEmpty. Operand 7189 states and 11961 transitions. [2022-01-10 12:21:10,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 12:21:10,502 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:10,502 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:21:10,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:21:10,502 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:10,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:10,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1570554161, now seen corresponding path program 1 times [2022-01-10 12:21:10,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:10,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51366409] [2022-01-10 12:21:10,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:10,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:10,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:10,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51366409] [2022-01-10 12:21:10,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51366409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:10,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:10,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:21:10,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931491364] [2022-01-10 12:21:10,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:10,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:21:10,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:10,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:21:10,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:21:10,607 INFO L87 Difference]: Start difference. First operand 7189 states and 11961 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:12,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:12,372 INFO L93 Difference]: Finished difference Result 13152 states and 21005 transitions. [2022-01-10 12:21:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:21:12,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2022-01-10 12:21:12,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:12,397 INFO L225 Difference]: With dead ends: 13152 [2022-01-10 12:21:12,397 INFO L226 Difference]: Without dead ends: 12422 [2022-01-10 12:21:12,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:21:12,402 INFO L933 BasicCegarLoop]: 1370 mSDtfsCounter, 2806 mSDsluCounter, 3655 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2806 SdHoareTripleChecker+Valid, 5025 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:12,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2806 Valid, 5025 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:21:12,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12422 states. [2022-01-10 12:21:13,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12422 to 8045. [2022-01-10 12:21:13,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8045 states, 8044 states have (on average 1.6490551964196918) internal successors, (13265), 8044 states have internal predecessors, (13265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:13,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8045 states to 8045 states and 13265 transitions. [2022-01-10 12:21:13,233 INFO L78 Accepts]: Start accepts. Automaton has 8045 states and 13265 transitions. Word has length 120 [2022-01-10 12:21:13,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:13,234 INFO L470 AbstractCegarLoop]: Abstraction has 8045 states and 13265 transitions. [2022-01-10 12:21:13,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 4 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:13,235 INFO L276 IsEmpty]: Start isEmpty. Operand 8045 states and 13265 transitions. [2022-01-10 12:21:13,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 12:21:13,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:13,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:21:13,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:21:13,247 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:13,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:13,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1770323371, now seen corresponding path program 1 times [2022-01-10 12:21:13,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:13,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36374455] [2022-01-10 12:21:13,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:13,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:13,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:13,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36374455] [2022-01-10 12:21:13,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36374455] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:13,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:13,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:21:13,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761664223] [2022-01-10 12:21:13,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:13,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:21:13,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:13,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:21:13,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:21:13,363 INFO L87 Difference]: Start difference. First operand 8045 states and 13265 transitions. Second operand has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 8 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:17,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:17,553 INFO L93 Difference]: Finished difference Result 29576 states and 46756 transitions. [2022-01-10 12:21:17,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:21:17,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 8 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-01-10 12:21:17,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:17,598 INFO L225 Difference]: With dead ends: 29576 [2022-01-10 12:21:17,598 INFO L226 Difference]: Without dead ends: 26819 [2022-01-10 12:21:17,608 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 [2022-01-10 12:21:17,609 INFO L933 BasicCegarLoop]: 892 mSDtfsCounter, 7204 mSDsluCounter, 5291 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7204 SdHoareTripleChecker+Valid, 6183 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:17,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7204 Valid, 6183 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:21:17,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26819 states. [2022-01-10 12:21:19,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26819 to 15063. [2022-01-10 12:21:19,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15063 states, 15062 states have (on average 1.6586110742265303) internal successors, (24982), 15062 states have internal predecessors, (24982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:19,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15063 states to 15063 states and 24982 transitions. [2022-01-10 12:21:19,287 INFO L78 Accepts]: Start accepts. Automaton has 15063 states and 24982 transitions. Word has length 121 [2022-01-10 12:21:19,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:19,287 INFO L470 AbstractCegarLoop]: Abstraction has 15063 states and 24982 transitions. [2022-01-10 12:21:19,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.444444444444445) internal successors, (121), 8 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:19,287 INFO L276 IsEmpty]: Start isEmpty. Operand 15063 states and 24982 transitions. [2022-01-10 12:21:19,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 12:21:19,307 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:19,309 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:21:19,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:21:19,309 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:19,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:19,309 INFO L85 PathProgramCache]: Analyzing trace with hash 14917829, now seen corresponding path program 1 times [2022-01-10 12:21:19,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:19,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933223338] [2022-01-10 12:21:19,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:19,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:19,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:19,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933223338] [2022-01-10 12:21:19,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933223338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:19,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:19,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:21:19,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259807207] [2022-01-10 12:21:19,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:19,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:21:19,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:21:19,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:21:19,399 INFO L87 Difference]: Start difference. First operand 15063 states and 24982 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:24,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:24,086 INFO L93 Difference]: Finished difference Result 43093 states and 69693 transitions. [2022-01-10 12:21:24,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:21:24,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-01-10 12:21:24,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:24,144 INFO L225 Difference]: With dead ends: 43093 [2022-01-10 12:21:24,144 INFO L226 Difference]: Without dead ends: 37048 [2022-01-10 12:21:24,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:21:24,160 INFO L933 BasicCegarLoop]: 963 mSDtfsCounter, 1219 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 3640 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 [2022-01-10 12:21:24,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1219 Valid, 3640 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:21:24,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37048 states. [2022-01-10 12:21:27,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37048 to 29829. [2022-01-10 12:21:27,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29829 states, 29828 states have (on average 1.6593804479013008) internal successors, (49496), 29828 states have internal predecessors, (49496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:27,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29829 states to 29829 states and 49496 transitions. [2022-01-10 12:21:27,522 INFO L78 Accepts]: Start accepts. Automaton has 29829 states and 49496 transitions. Word has length 121 [2022-01-10 12:21:27,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:27,522 INFO L470 AbstractCegarLoop]: Abstraction has 29829 states and 49496 transitions. [2022-01-10 12:21:27,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:27,522 INFO L276 IsEmpty]: Start isEmpty. Operand 29829 states and 49496 transitions. [2022-01-10 12:21:27,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-01-10 12:21:27,567 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:27,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:21:27,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 12:21:27,568 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:27,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:27,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1244096234, now seen corresponding path program 1 times [2022-01-10 12:21:27,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:27,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983530313] [2022-01-10 12:21:27,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:27,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:27,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:27,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983530313] [2022-01-10 12:21:27,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983530313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:27,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:27,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:21:27,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215751797] [2022-01-10 12:21:27,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:27,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:21:27,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:27,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:21:27,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:21:27,686 INFO L87 Difference]: Start difference. First operand 29829 states and 49496 transitions. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:33,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:33,451 INFO L93 Difference]: Finished difference Result 46576 states and 74850 transitions. [2022-01-10 12:21:33,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:21:33,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2022-01-10 12:21:33,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:33,512 INFO L225 Difference]: With dead ends: 46576 [2022-01-10 12:21:33,512 INFO L226 Difference]: Without dead ends: 41806 [2022-01-10 12:21:33,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:21:33,528 INFO L933 BasicCegarLoop]: 1083 mSDtfsCounter, 1581 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1581 SdHoareTripleChecker+Valid, 3038 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 [2022-01-10 12:21:33,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1581 Valid, 3038 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:21:33,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41806 states. [2022-01-10 12:21:37,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41806 to 31831. [2022-01-10 12:21:37,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31831 states, 31830 states have (on average 1.6493245366006912) internal successors, (52498), 31830 states have internal predecessors, (52498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:37,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31831 states to 31831 states and 52498 transitions. [2022-01-10 12:21:37,226 INFO L78 Accepts]: Start accepts. Automaton has 31831 states and 52498 transitions. Word has length 121 [2022-01-10 12:21:37,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:21:37,226 INFO L470 AbstractCegarLoop]: Abstraction has 31831 states and 52498 transitions. [2022-01-10 12:21:37,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:37,227 INFO L276 IsEmpty]: Start isEmpty. Operand 31831 states and 52498 transitions. [2022-01-10 12:21:37,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 12:21:37,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:21:37,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:21:37,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 12:21:37,265 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:21:37,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:21:37,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1607912597, now seen corresponding path program 1 times [2022-01-10 12:21:37,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:21:37,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569675942] [2022-01-10 12:21:37,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:21:37,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:21:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:21:37,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:21:37,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:21:37,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569675942] [2022-01-10 12:21:37,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569675942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:21:37,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:21:37,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:21:37,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942166473] [2022-01-10 12:21:37,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:21:37,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:21:37,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:21:37,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:21:37,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:21:37,374 INFO L87 Difference]: Start difference. First operand 31831 states and 52498 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:21:53,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:21:53,888 INFO L93 Difference]: Finished difference Result 113078 states and 178962 transitions. [2022-01-10 12:21:53,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 12:21:53,889 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-01-10 12:21:53,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:21:54,084 INFO L225 Difference]: With dead ends: 113078 [2022-01-10 12:21:54,084 INFO L226 Difference]: Without dead ends: 101837 [2022-01-10 12:21:54,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:21:54,122 INFO L933 BasicCegarLoop]: 842 mSDtfsCounter, 8466 mSDsluCounter, 5002 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8466 SdHoareTripleChecker+Valid, 5844 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:21:54,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8466 Valid, 5844 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:21:54,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101837 states. [2022-01-10 12:22:01,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101837 to 59714. [2022-01-10 12:22:01,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59714 states, 59713 states have (on average 1.6580644080853415) internal successors, (99008), 59713 states have internal predecessors, (99008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:01,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59714 states to 59714 states and 99008 transitions. [2022-01-10 12:22:01,488 INFO L78 Accepts]: Start accepts. Automaton has 59714 states and 99008 transitions. Word has length 122 [2022-01-10 12:22:01,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:22:01,488 INFO L470 AbstractCegarLoop]: Abstraction has 59714 states and 99008 transitions. [2022-01-10 12:22:01,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:22:01,489 INFO L276 IsEmpty]: Start isEmpty. Operand 59714 states and 99008 transitions. [2022-01-10 12:22:01,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-10 12:22:01,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:22:01,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:22:01,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 12:22:01,546 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:22:01,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:22:01,547 INFO L85 PathProgramCache]: Analyzing trace with hash -2042921655, now seen corresponding path program 1 times [2022-01-10 12:22:01,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:22:01,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641872918] [2022-01-10 12:22:01,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:22:01,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:22:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:22:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:22:01,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:22:01,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641872918] [2022-01-10 12:22:01,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641872918] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:22:01,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:22:01,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:22:01,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241091250] [2022-01-10 12:22:01,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:22:01,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:22:01,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:22:01,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:22:01,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:22:01,643 INFO L87 Difference]: Start difference. First operand 59714 states and 99008 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 8 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)