/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec1_product16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:52:03,980 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:52:03,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:52:04,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:52:04,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:52:04,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:52:04,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:52:04,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:52:04,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:52:04,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:52:04,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:52:04,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:52:04,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:52:04,047 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:52:04,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:52:04,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:52:04,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:52:04,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:52:04,050 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:52:04,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:52:04,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:52:04,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:52:04,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:52:04,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:52:04,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:52:04,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:52:04,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:52:04,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:52:04,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:52:04,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:52:04,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:52:04,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:52:04,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:52:04,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:52:04,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:52:04,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:52:04,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:52:04,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:52:04,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:52:04,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:52:04,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:52:04,075 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:52:04,103 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:52:04,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:52:04,103 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:52:04,103 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:52:04,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:52:04,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:52:04,104 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:52:04,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:52:04,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:52:04,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:52:04,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:52:04,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:52:04,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:52:04,105 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:52:04,105 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:52:04,105 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:52:04,105 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:52:04,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:52:04,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:52:04,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:52:04,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:52:04,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:52:04,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:52:04,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:52:04,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:52:04,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:52:04,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:52:04,106 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:52:04,106 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:52:04,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:52:04,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:52:04,106 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:52:04,107 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:52:04,107 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:52:04,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:52:04,324 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:52:04,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:52:04,326 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:52:04,330 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:52:04,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec1_product16.cil.c [2022-01-10 23:52:04,388 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7c195d01/fead5cc6f5aa4e3da4ca3d9a6f134148/FLAGff052f4a3 [2022-01-10 23:52:04,801 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:52:04,801 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product16.cil.c [2022-01-10 23:52:04,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7c195d01/fead5cc6f5aa4e3da4ca3d9a6f134148/FLAGff052f4a3 [2022-01-10 23:52:05,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7c195d01/fead5cc6f5aa4e3da4ca3d9a6f134148 [2022-01-10 23:52:05,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:52:05,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:52:05,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:52:05,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:52:05,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:52:05,110 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:52:05" (1/1) ... [2022-01-10 23:52:05,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@590bdb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:05, skipping insertion in model container [2022-01-10 23:52:05,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:52:05" (1/1) ... [2022-01-10 23:52:05,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:52:05,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:52:05,483 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_spec1_product16.cil.c[36116,36129] [2022-01-10 23:52:05,601 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:52:05,616 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:52:05,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:52:05,665 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_spec1_product16.cil.c[36116,36129] [2022-01-10 23:52:05,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:52:05,707 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:52:05,741 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_spec1_product16.cil.c[36116,36129] [2022-01-10 23:52:05,771 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:52:05,795 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:52:05,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:05 WrapperNode [2022-01-10 23:52:05,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:52:05,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:52:05,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:52:05,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:52:05,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:05" (1/1) ... [2022-01-10 23:52:05,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:05" (1/1) ... [2022-01-10 23:52:05,895 INFO L137 Inliner]: procedures = 127, calls = 196, calls flagged for inlining = 110, calls inlined = 145, statements flattened = 2157 [2022-01-10 23:52:05,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:52:05,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:52:05,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:52:05,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:52:05,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:05" (1/1) ... [2022-01-10 23:52:05,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:05" (1/1) ... [2022-01-10 23:52:05,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:05" (1/1) ... [2022-01-10 23:52:05,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:05" (1/1) ... [2022-01-10 23:52:05,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:05" (1/1) ... [2022-01-10 23:52:05,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:05" (1/1) ... [2022-01-10 23:52:05,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:05" (1/1) ... [2022-01-10 23:52:05,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:52:05,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:52:05,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:52:05,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:52:05,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:05" (1/1) ... [2022-01-10 23:52:05,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:52:05,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:52:05,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 23:52:05,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 23:52:06,018 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:52:06,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:52:06,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:52:06,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:52:06,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:52:06,199 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:52:06,201 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:52:07,139 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:52:07,153 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:52:07,154 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:52:07,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:52:07 BoogieIcfgContainer [2022-01-10 23:52:07,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:52:07,157 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:52:07,157 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:52:07,158 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:52:07,160 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:52:07" (1/1) ... [2022-01-10 23:52:07,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:52:07 BasicIcfg [2022-01-10 23:52:07,403 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:52:07,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:52:07,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:52:07,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:52:07,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:52:05" (1/4) ... [2022-01-10 23:52:07,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdc1fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:52:07, skipping insertion in model container [2022-01-10 23:52:07,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:52:05" (2/4) ... [2022-01-10 23:52:07,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdc1fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:52:07, skipping insertion in model container [2022-01-10 23:52:07,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:52:07" (3/4) ... [2022-01-10 23:52:07,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdc1fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:52:07, skipping insertion in model container [2022-01-10 23:52:07,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:52:07" (4/4) ... [2022-01-10 23:52:07,408 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product16.cil.cTransformedIcfg [2022-01-10 23:52:07,413 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:52:07,413 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 23:52:07,456 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:52:07,460 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 23:52:07,460 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 23:52:07,483 INFO L276 IsEmpty]: Start isEmpty. Operand has 490 states, 487 states have (on average 1.6858316221765914) internal successors, (821), 489 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:07,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 23:52:07,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:07,492 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] [2022-01-10 23:52:07,493 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:07,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:07,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1887767398, now seen corresponding path program 1 times [2022-01-10 23:52:07,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:07,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188604284] [2022-01-10 23:52:07,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:07,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:07,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:07,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:07,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188604284] [2022-01-10 23:52:07,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188604284] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:07,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:07,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:52:07,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881992408] [2022-01-10 23:52:07,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:07,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:52:07,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:07,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:52:07,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:52:07,769 INFO L87 Difference]: Start difference. First operand has 490 states, 487 states have (on average 1.6858316221765914) internal successors, (821), 489 states have internal predecessors, (821), 0 states have call successors, (0), 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 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:07,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:07,821 INFO L93 Difference]: Finished difference Result 719 states and 1182 transitions. [2022-01-10 23:52:07,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:52:07,822 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-01-10 23:52:07,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:07,837 INFO L225 Difference]: With dead ends: 719 [2022-01-10 23:52:07,837 INFO L226 Difference]: Without dead ends: 412 [2022-01-10 23:52:07,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:52:07,844 INFO L933 BasicCegarLoop]: 815 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, 815 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:07,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:07,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-01-10 23:52:07,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2022-01-10 23:52:07,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 410 states have (on average 1.7) internal successors, (697), 411 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:07,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 697 transitions. [2022-01-10 23:52:07,906 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 697 transitions. Word has length 48 [2022-01-10 23:52:07,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:07,906 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 697 transitions. [2022-01-10 23:52:07,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:07,907 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 697 transitions. [2022-01-10 23:52:07,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 23:52:07,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:07,909 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] [2022-01-10 23:52:07,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:52:07,909 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:07,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:07,910 INFO L85 PathProgramCache]: Analyzing trace with hash 758039776, now seen corresponding path program 1 times [2022-01-10 23:52:07,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:07,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878779602] [2022-01-10 23:52:07,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:07,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:08,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:08,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878779602] [2022-01-10 23:52:08,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878779602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:08,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:08,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:52:08,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100728559] [2022-01-10 23:52:08,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:08,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:52:08,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:08,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:52:08,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:08,078 INFO L87 Difference]: Start difference. First operand 412 states and 697 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:08,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:08,110 INFO L93 Difference]: Finished difference Result 519 states and 863 transitions. [2022-01-10 23:52:08,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:52:08,110 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-01-10 23:52:08,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:08,113 INFO L225 Difference]: With dead ends: 519 [2022-01-10 23:52:08,113 INFO L226 Difference]: Without dead ends: 406 [2022-01-10 23:52:08,115 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 23:52:08,116 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 477 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:08,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 851 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:08,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-01-10 23:52:08,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2022-01-10 23:52:08,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.6987654320987655) internal successors, (688), 405 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:08,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 688 transitions. [2022-01-10 23:52:08,133 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 688 transitions. Word has length 49 [2022-01-10 23:52:08,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:08,133 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 688 transitions. [2022-01-10 23:52:08,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:08,133 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 688 transitions. [2022-01-10 23:52:08,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 23:52:08,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:08,136 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] [2022-01-10 23:52:08,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:52:08,136 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:08,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:08,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1949678099, now seen corresponding path program 1 times [2022-01-10 23:52:08,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:08,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575632338] [2022-01-10 23:52:08,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:08,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:08,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:08,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575632338] [2022-01-10 23:52:08,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575632338] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:08,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:08,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:52:08,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561571103] [2022-01-10 23:52:08,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:08,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:52:08,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:08,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:52:08,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:08,253 INFO L87 Difference]: Start difference. First operand 406 states and 688 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:08,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:08,302 INFO L93 Difference]: Finished difference Result 793 states and 1348 transitions. [2022-01-10 23:52:08,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:52:08,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-01-10 23:52:08,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:08,304 INFO L225 Difference]: With dead ends: 793 [2022-01-10 23:52:08,304 INFO L226 Difference]: Without dead ends: 406 [2022-01-10 23:52:08,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:08,310 INFO L933 BasicCegarLoop]: 669 mSDtfsCounter, 663 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:08,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [663 Valid, 682 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:08,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-01-10 23:52:08,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2022-01-10 23:52:08,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.693827160493827) internal successors, (686), 405 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:08,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 686 transitions. [2022-01-10 23:52:08,327 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 686 transitions. Word has length 85 [2022-01-10 23:52:08,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:08,328 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 686 transitions. [2022-01-10 23:52:08,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:08,328 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 686 transitions. [2022-01-10 23:52:08,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 23:52:08,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:08,331 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] [2022-01-10 23:52:08,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:52:08,332 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:08,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:08,332 INFO L85 PathProgramCache]: Analyzing trace with hash 2068149229, now seen corresponding path program 1 times [2022-01-10 23:52:08,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:08,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507691105] [2022-01-10 23:52:08,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:08,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:08,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:08,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:08,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507691105] [2022-01-10 23:52:08,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507691105] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:08,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:08,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:52:08,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332685212] [2022-01-10 23:52:08,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:08,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:08,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:08,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:08,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:08,500 INFO L87 Difference]: Start difference. First operand 406 states and 686 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:08,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:08,647 INFO L93 Difference]: Finished difference Result 1898 states and 3226 transitions. [2022-01-10 23:52:08,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:52:08,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-01-10 23:52:08,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:08,654 INFO L225 Difference]: With dead ends: 1898 [2022-01-10 23:52:08,654 INFO L226 Difference]: Without dead ends: 1516 [2022-01-10 23:52:08,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:52:08,661 INFO L933 BasicCegarLoop]: 1295 mSDtfsCounter, 3213 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3213 SdHoareTripleChecker+Valid, 3225 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:08,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3213 Valid, 3225 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:08,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1516 states. [2022-01-10 23:52:08,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1516 to 406. [2022-01-10 23:52:08,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.691358024691358) internal successors, (685), 405 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:08,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 685 transitions. [2022-01-10 23:52:08,684 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 685 transitions. Word has length 87 [2022-01-10 23:52:08,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:08,684 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 685 transitions. [2022-01-10 23:52:08,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:08,684 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 685 transitions. [2022-01-10 23:52:08,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 23:52:08,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:08,686 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] [2022-01-10 23:52:08,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:52:08,686 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:08,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:08,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1480667097, now seen corresponding path program 1 times [2022-01-10 23:52:08,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:08,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869491000] [2022-01-10 23:52:08,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:08,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:08,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:08,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869491000] [2022-01-10 23:52:08,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869491000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:08,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:08,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:52:08,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108366029] [2022-01-10 23:52:08,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:08,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:52:08,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:08,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:52:08,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:08,816 INFO L87 Difference]: Start difference. First operand 406 states and 685 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:08,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:08,853 INFO L93 Difference]: Finished difference Result 797 states and 1348 transitions. [2022-01-10 23:52:08,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:52:08,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-01-10 23:52:08,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:08,870 INFO L225 Difference]: With dead ends: 797 [2022-01-10 23:52:08,870 INFO L226 Difference]: Without dead ends: 420 [2022-01-10 23:52:08,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:08,872 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 664 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:08,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 721 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:08,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-01-10 23:52:08,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 406. [2022-01-10 23:52:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.6888888888888889) internal successors, (684), 405 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:08,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 684 transitions. [2022-01-10 23:52:08,900 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 684 transitions. Word has length 88 [2022-01-10 23:52:08,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:08,904 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 684 transitions. [2022-01-10 23:52:08,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:08,904 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 684 transitions. [2022-01-10 23:52:08,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 23:52:08,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:08,908 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] [2022-01-10 23:52:08,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:52:08,909 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:08,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:08,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1917038194, now seen corresponding path program 1 times [2022-01-10 23:52:08,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:08,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412186358] [2022-01-10 23:52:08,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:08,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:09,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:09,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412186358] [2022-01-10 23:52:09,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412186358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:09,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:09,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:52:09,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103070776] [2022-01-10 23:52:09,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:09,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:09,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:09,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:09,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:09,014 INFO L87 Difference]: Start difference. First operand 406 states and 684 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:09,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:09,136 INFO L93 Difference]: Finished difference Result 1152 states and 1952 transitions. [2022-01-10 23:52:09,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:52:09,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-01-10 23:52:09,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:09,140 INFO L225 Difference]: With dead ends: 1152 [2022-01-10 23:52:09,140 INFO L226 Difference]: Without dead ends: 780 [2022-01-10 23:52:09,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:52:09,141 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 3136 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3136 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:09,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3136 Valid, 1400 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:09,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-01-10 23:52:09,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 406. [2022-01-10 23:52:09,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 1.6839506172839507) internal successors, (682), 405 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:09,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 682 transitions. [2022-01-10 23:52:09,166 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 682 transitions. Word has length 89 [2022-01-10 23:52:09,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:09,168 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 682 transitions. [2022-01-10 23:52:09,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:09,168 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 682 transitions. [2022-01-10 23:52:09,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 23:52:09,169 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:09,169 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] [2022-01-10 23:52:09,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:52:09,169 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:09,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:09,170 INFO L85 PathProgramCache]: Analyzing trace with hash -311095829, now seen corresponding path program 1 times [2022-01-10 23:52:09,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:09,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547568389] [2022-01-10 23:52:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:09,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:09,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:09,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:09,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547568389] [2022-01-10 23:52:09,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547568389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:09,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:09,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:52:09,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160441548] [2022-01-10 23:52:09,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:09,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:52:09,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:09,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:52:09,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:52:09,266 INFO L87 Difference]: Start difference. First operand 406 states and 682 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:09,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:09,462 INFO L93 Difference]: Finished difference Result 1783 states and 2988 transitions. [2022-01-10 23:52:09,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:52:09,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2022-01-10 23:52:09,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:09,467 INFO L225 Difference]: With dead ends: 1783 [2022-01-10 23:52:09,468 INFO L226 Difference]: Without dead ends: 1702 [2022-01-10 23:52:09,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:52:09,469 INFO L933 BasicCegarLoop]: 790 mSDtfsCounter, 3200 mSDsluCounter, 3345 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3200 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:09,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3200 Valid, 4135 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:09,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2022-01-10 23:52:09,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 698. [2022-01-10 23:52:09,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 1.7044476327116211) internal successors, (1188), 697 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:09,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1188 transitions. [2022-01-10 23:52:09,516 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1188 transitions. Word has length 91 [2022-01-10 23:52:09,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:09,516 INFO L470 AbstractCegarLoop]: Abstraction has 698 states and 1188 transitions. [2022-01-10 23:52:09,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:09,516 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1188 transitions. [2022-01-10 23:52:09,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 23:52:09,517 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:09,517 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] [2022-01-10 23:52:09,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:52:09,518 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:09,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:09,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1210202387, now seen corresponding path program 1 times [2022-01-10 23:52:09,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:09,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568379171] [2022-01-10 23:52:09,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:09,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:09,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:09,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:09,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568379171] [2022-01-10 23:52:09,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568379171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:09,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:09,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:52:09,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020458504] [2022-01-10 23:52:09,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:09,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:52:09,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:09,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:52:09,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:52:09,619 INFO L87 Difference]: Start difference. First operand 698 states and 1188 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:09,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:09,845 INFO L93 Difference]: Finished difference Result 2851 states and 4874 transitions. [2022-01-10 23:52:09,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:52:09,845 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-01-10 23:52:09,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:09,853 INFO L225 Difference]: With dead ends: 2851 [2022-01-10 23:52:09,853 INFO L226 Difference]: Without dead ends: 2770 [2022-01-10 23:52:09,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:52:09,855 INFO L933 BasicCegarLoop]: 822 mSDtfsCounter, 3071 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3071 SdHoareTripleChecker+Valid, 3607 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:09,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3071 Valid, 3607 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:09,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2022-01-10 23:52:09,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 1259. [2022-01-10 23:52:09,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1258 states have (on average 1.724960254372019) internal successors, (2170), 1258 states have internal predecessors, (2170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:09,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 2170 transitions. [2022-01-10 23:52:09,920 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 2170 transitions. Word has length 92 [2022-01-10 23:52:09,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:09,920 INFO L470 AbstractCegarLoop]: Abstraction has 1259 states and 2170 transitions. [2022-01-10 23:52:09,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:09,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 2170 transitions. [2022-01-10 23:52:09,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 23:52:09,922 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:09,922 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] [2022-01-10 23:52:09,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:52:09,923 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:09,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:09,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1323923987, now seen corresponding path program 1 times [2022-01-10 23:52:09,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:09,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588662706] [2022-01-10 23:52:09,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:09,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:09,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:09,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588662706] [2022-01-10 23:52:09,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588662706] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:09,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:09,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:52:09,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821323866] [2022-01-10 23:52:09,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:09,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:09,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:09,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:09,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:09,985 INFO L87 Difference]: Start difference. First operand 1259 states and 2170 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:10,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:10,185 INFO L93 Difference]: Finished difference Result 3589 states and 6250 transitions. [2022-01-10 23:52:10,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:52:10,186 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-01-10 23:52:10,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:10,193 INFO L225 Difference]: With dead ends: 3589 [2022-01-10 23:52:10,194 INFO L226 Difference]: Without dead ends: 2380 [2022-01-10 23:52:10,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:52:10,196 INFO L933 BasicCegarLoop]: 1267 mSDtfsCounter, 1983 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:10,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1983 Valid, 1902 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:10,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2022-01-10 23:52:10,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 1259. [2022-01-10 23:52:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1258 states have (on average 1.7233704292527823) internal successors, (2168), 1258 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 2168 transitions. [2022-01-10 23:52:10,294 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 2168 transitions. Word has length 92 [2022-01-10 23:52:10,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:10,294 INFO L470 AbstractCegarLoop]: Abstraction has 1259 states and 2168 transitions. [2022-01-10 23:52:10,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:10,295 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 2168 transitions. [2022-01-10 23:52:10,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 23:52:10,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:10,296 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] [2022-01-10 23:52:10,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:52:10,297 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:10,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:10,297 INFO L85 PathProgramCache]: Analyzing trace with hash 130096836, now seen corresponding path program 1 times [2022-01-10 23:52:10,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:10,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224206179] [2022-01-10 23:52:10,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:10,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:10,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:10,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:10,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224206179] [2022-01-10 23:52:10,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224206179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:10,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:10,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:52:10,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301769885] [2022-01-10 23:52:10,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:10,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:10,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:10,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:10,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:10,368 INFO L87 Difference]: Start difference. First operand 1259 states and 2168 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:10,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:10,559 INFO L93 Difference]: Finished difference Result 3587 states and 6242 transitions. [2022-01-10 23:52:10,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:52:10,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-01-10 23:52:10,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:10,567 INFO L225 Difference]: With dead ends: 3587 [2022-01-10 23:52:10,567 INFO L226 Difference]: Without dead ends: 2388 [2022-01-10 23:52:10,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:52:10,569 INFO L933 BasicCegarLoop]: 1272 mSDtfsCounter, 1968 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:10,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1968 Valid, 1934 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:10,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2022-01-10 23:52:10,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 1259. [2022-01-10 23:52:10,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1258 states have (on average 1.7217806041335453) internal successors, (2166), 1258 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:10,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 2166 transitions. [2022-01-10 23:52:10,664 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 2166 transitions. Word has length 93 [2022-01-10 23:52:10,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:10,664 INFO L470 AbstractCegarLoop]: Abstraction has 1259 states and 2166 transitions. [2022-01-10 23:52:10,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:10,665 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 2166 transitions. [2022-01-10 23:52:10,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 23:52:10,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:10,666 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] [2022-01-10 23:52:10,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:52:10,667 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:10,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:10,667 INFO L85 PathProgramCache]: Analyzing trace with hash 997149061, now seen corresponding path program 1 times [2022-01-10 23:52:10,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:10,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923049545] [2022-01-10 23:52:10,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:10,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:10,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:10,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923049545] [2022-01-10 23:52:10,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923049545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:10,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:10,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:52:10,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121120540] [2022-01-10 23:52:10,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:10,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:52:10,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:10,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:52:10,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:52:10,793 INFO L87 Difference]: Start difference. First operand 1259 states and 2166 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:11,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:11,373 INFO L93 Difference]: Finished difference Result 3507 states and 5897 transitions. [2022-01-10 23:52:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:52:11,374 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-01-10 23:52:11,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:11,383 INFO L225 Difference]: With dead ends: 3507 [2022-01-10 23:52:11,383 INFO L226 Difference]: Without dead ends: 3302 [2022-01-10 23:52:11,385 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 23:52:11,385 INFO L933 BasicCegarLoop]: 852 mSDtfsCounter, 3658 mSDsluCounter, 5608 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3658 SdHoareTripleChecker+Valid, 6460 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:11,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3658 Valid, 6460 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:52:11,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3302 states. [2022-01-10 23:52:11,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3302 to 2409. [2022-01-10 23:52:11,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 2408 states have (on average 1.7379568106312293) internal successors, (4185), 2408 states have internal predecessors, (4185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:11,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 4185 transitions. [2022-01-10 23:52:11,579 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 4185 transitions. Word has length 93 [2022-01-10 23:52:11,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:11,580 INFO L470 AbstractCegarLoop]: Abstraction has 2409 states and 4185 transitions. [2022-01-10 23:52:11,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:11,580 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 4185 transitions. [2022-01-10 23:52:11,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 23:52:11,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:11,583 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] [2022-01-10 23:52:11,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:52:11,583 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:11,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:11,584 INFO L85 PathProgramCache]: Analyzing trace with hash 702430218, now seen corresponding path program 1 times [2022-01-10 23:52:11,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:11,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067149850] [2022-01-10 23:52:11,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:11,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:11,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:11,642 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 23:52:11,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:11,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067149850] [2022-01-10 23:52:11,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067149850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:11,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:11,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:52:11,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516212241] [2022-01-10 23:52:11,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:11,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:52:11,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:11,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:52:11,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:52:11,644 INFO L87 Difference]: Start difference. First operand 2409 states and 4185 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:11,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:11,856 INFO L93 Difference]: Finished difference Result 2755 states and 4729 transitions. [2022-01-10 23:52:11,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:52:11,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-01-10 23:52:11,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:11,864 INFO L225 Difference]: With dead ends: 2755 [2022-01-10 23:52:11,864 INFO L226 Difference]: Without dead ends: 2494 [2022-01-10 23:52:11,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:11,865 INFO L933 BasicCegarLoop]: 673 mSDtfsCounter, 556 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:11,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 1676 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:11,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2022-01-10 23:52:12,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 2409. [2022-01-10 23:52:12,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2409 states, 2408 states have (on average 1.736295681063123) internal successors, (4181), 2408 states have internal predecessors, (4181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:12,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 4181 transitions. [2022-01-10 23:52:12,039 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 4181 transitions. Word has length 94 [2022-01-10 23:52:12,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:12,039 INFO L470 AbstractCegarLoop]: Abstraction has 2409 states and 4181 transitions. [2022-01-10 23:52:12,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:12,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 4181 transitions. [2022-01-10 23:52:12,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 23:52:12,043 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:12,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:12,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:52:12,044 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:12,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:12,044 INFO L85 PathProgramCache]: Analyzing trace with hash 722767593, now seen corresponding path program 1 times [2022-01-10 23:52:12,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:12,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123443185] [2022-01-10 23:52:12,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:12,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:12,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:12,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:12,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123443185] [2022-01-10 23:52:12,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123443185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:12,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:12,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:52:12,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949620070] [2022-01-10 23:52:12,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:12,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:12,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:12,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:12,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:12,136 INFO L87 Difference]: Start difference. First operand 2409 states and 4181 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:12,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:12,508 INFO L93 Difference]: Finished difference Result 3811 states and 6369 transitions. [2022-01-10 23:52:12,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:52:12,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-01-10 23:52:12,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:12,541 INFO L225 Difference]: With dead ends: 3811 [2022-01-10 23:52:12,542 INFO L226 Difference]: Without dead ends: 3638 [2022-01-10 23:52:12,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:52:12,543 INFO L933 BasicCegarLoop]: 1022 mSDtfsCounter, 1578 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 3538 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:12,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1578 Valid, 3538 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:12,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3638 states. [2022-01-10 23:52:12,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3638 to 2561. [2022-01-10 23:52:12,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2561 states, 2560 states have (on average 1.730078125) internal successors, (4429), 2560 states have internal predecessors, (4429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:12,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2561 states to 2561 states and 4429 transitions. [2022-01-10 23:52:12,704 INFO L78 Accepts]: Start accepts. Automaton has 2561 states and 4429 transitions. Word has length 94 [2022-01-10 23:52:12,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:12,704 INFO L470 AbstractCegarLoop]: Abstraction has 2561 states and 4429 transitions. [2022-01-10 23:52:12,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:12,704 INFO L276 IsEmpty]: Start isEmpty. Operand 2561 states and 4429 transitions. [2022-01-10 23:52:12,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-10 23:52:12,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:12,708 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] [2022-01-10 23:52:12,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:52:12,708 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:12,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:12,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1298835105, now seen corresponding path program 1 times [2022-01-10 23:52:12,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:12,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974468756] [2022-01-10 23:52:12,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:12,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:12,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:12,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974468756] [2022-01-10 23:52:12,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974468756] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:12,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:12,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:52:12,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946451976] [2022-01-10 23:52:12,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:12,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 23:52:12,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:12,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 23:52:12,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:52:12,802 INFO L87 Difference]: Start difference. First operand 2561 states and 4429 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:13,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:13,238 INFO L93 Difference]: Finished difference Result 3736 states and 6241 transitions. [2022-01-10 23:52:13,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 23:52:13,238 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2022-01-10 23:52:13,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:13,246 INFO L225 Difference]: With dead ends: 3736 [2022-01-10 23:52:13,246 INFO L226 Difference]: Without dead ends: 3617 [2022-01-10 23:52:13,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-01-10 23:52:13,248 INFO L933 BasicCegarLoop]: 1214 mSDtfsCounter, 1792 mSDsluCounter, 4716 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 5930 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:13,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1792 Valid, 5930 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:13,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3617 states. [2022-01-10 23:52:13,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3617 to 2611. [2022-01-10 23:52:13,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2611 states, 2610 states have (on average 1.7260536398467432) internal successors, (4505), 2610 states have internal predecessors, (4505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:13,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2611 states to 2611 states and 4505 transitions. [2022-01-10 23:52:13,478 INFO L78 Accepts]: Start accepts. Automaton has 2611 states and 4505 transitions. Word has length 94 [2022-01-10 23:52:13,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:13,478 INFO L470 AbstractCegarLoop]: Abstraction has 2611 states and 4505 transitions. [2022-01-10 23:52:13,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:13,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2611 states and 4505 transitions. [2022-01-10 23:52:13,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 23:52:13,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:13,482 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] [2022-01-10 23:52:13,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:52:13,483 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:13,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:13,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1945310738, now seen corresponding path program 1 times [2022-01-10 23:52:13,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:13,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109219884] [2022-01-10 23:52:13,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:13,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:13,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:13,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109219884] [2022-01-10 23:52:13,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109219884] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:13,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:13,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:52:13,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949239134] [2022-01-10 23:52:13,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:13,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:13,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:13,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:13,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:13,592 INFO L87 Difference]: Start difference. First operand 2611 states and 4505 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:14,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:14,099 INFO L93 Difference]: Finished difference Result 5461 states and 9163 transitions. [2022-01-10 23:52:14,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:52:14,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-01-10 23:52:14,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:14,110 INFO L225 Difference]: With dead ends: 5461 [2022-01-10 23:52:14,110 INFO L226 Difference]: Without dead ends: 5024 [2022-01-10 23:52:14,111 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 23:52:14,112 INFO L933 BasicCegarLoop]: 797 mSDtfsCounter, 1556 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:14,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1556 Valid, 2380 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:14,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5024 states. [2022-01-10 23:52:14,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5024 to 4055. [2022-01-10 23:52:14,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4055 states, 4054 states have (on average 1.7215096201282685) internal successors, (6979), 4054 states have internal predecessors, (6979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:14,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4055 states to 4055 states and 6979 transitions. [2022-01-10 23:52:14,436 INFO L78 Accepts]: Start accepts. Automaton has 4055 states and 6979 transitions. Word has length 95 [2022-01-10 23:52:14,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:14,436 INFO L470 AbstractCegarLoop]: Abstraction has 4055 states and 6979 transitions. [2022-01-10 23:52:14,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:14,436 INFO L276 IsEmpty]: Start isEmpty. Operand 4055 states and 6979 transitions. [2022-01-10 23:52:14,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 23:52:14,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:14,442 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] [2022-01-10 23:52:14,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:52:14,443 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:14,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:14,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1105523152, now seen corresponding path program 1 times [2022-01-10 23:52:14,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:14,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766318862] [2022-01-10 23:52:14,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:14,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:14,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:14,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766318862] [2022-01-10 23:52:14,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766318862] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:14,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:14,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:52:14,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743429371] [2022-01-10 23:52:14,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:14,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:52:14,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:14,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:52:14,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:52:14,570 INFO L87 Difference]: Start difference. First operand 4055 states and 6979 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:15,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:15,487 INFO L93 Difference]: Finished difference Result 6246 states and 10229 transitions. [2022-01-10 23:52:15,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 23:52:15,487 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-01-10 23:52:15,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:15,502 INFO L225 Difference]: With dead ends: 6246 [2022-01-10 23:52:15,502 INFO L226 Difference]: Without dead ends: 6041 [2022-01-10 23:52:15,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=260, Invalid=610, Unknown=0, NotChecked=0, Total=870 [2022-01-10 23:52:15,505 INFO L933 BasicCegarLoop]: 728 mSDtfsCounter, 4395 mSDsluCounter, 5336 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4395 SdHoareTripleChecker+Valid, 6064 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:15,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4395 Valid, 6064 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:15,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6041 states. [2022-01-10 23:52:15,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6041 to 4163. [2022-01-10 23:52:15,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4163 states, 4162 states have (on average 1.717203267659779) internal successors, (7147), 4162 states have internal predecessors, (7147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:15,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4163 states to 4163 states and 7147 transitions. [2022-01-10 23:52:15,943 INFO L78 Accepts]: Start accepts. Automaton has 4163 states and 7147 transitions. Word has length 95 [2022-01-10 23:52:15,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:15,943 INFO L470 AbstractCegarLoop]: Abstraction has 4163 states and 7147 transitions. [2022-01-10 23:52:15,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:15,943 INFO L276 IsEmpty]: Start isEmpty. Operand 4163 states and 7147 transitions. [2022-01-10 23:52:15,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 23:52:15,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:15,950 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] [2022-01-10 23:52:15,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:52:15,950 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:15,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:15,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1425138421, now seen corresponding path program 1 times [2022-01-10 23:52:15,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:15,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470754351] [2022-01-10 23:52:15,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:15,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:16,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:16,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:16,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470754351] [2022-01-10 23:52:16,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470754351] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:16,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:16,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:52:16,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441925451] [2022-01-10 23:52:16,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:16,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:16,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:16,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:16,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:16,046 INFO L87 Difference]: Start difference. First operand 4163 states and 7147 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:16,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:16,820 INFO L93 Difference]: Finished difference Result 6307 states and 10335 transitions. [2022-01-10 23:52:16,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:52:16,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-01-10 23:52:16,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:16,864 INFO L225 Difference]: With dead ends: 6307 [2022-01-10 23:52:16,864 INFO L226 Difference]: Without dead ends: 5990 [2022-01-10 23:52:16,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:52:16,867 INFO L933 BasicCegarLoop]: 990 mSDtfsCounter, 1232 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:16,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1232 Valid, 2841 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:16,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2022-01-10 23:52:17,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 3893. [2022-01-10 23:52:17,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3893 states, 3892 states have (on average 1.7204522096608428) internal successors, (6696), 3892 states have internal predecessors, (6696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:17,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3893 states to 3893 states and 6696 transitions. [2022-01-10 23:52:17,208 INFO L78 Accepts]: Start accepts. Automaton has 3893 states and 6696 transitions. Word has length 95 [2022-01-10 23:52:17,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:17,208 INFO L470 AbstractCegarLoop]: Abstraction has 3893 states and 6696 transitions. [2022-01-10 23:52:17,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 4 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:17,209 INFO L276 IsEmpty]: Start isEmpty. Operand 3893 states and 6696 transitions. [2022-01-10 23:52:17,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-01-10 23:52:17,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:17,219 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:17,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 23:52:17,220 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:17,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:17,220 INFO L85 PathProgramCache]: Analyzing trace with hash -273562897, now seen corresponding path program 1 times [2022-01-10 23:52:17,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:17,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913736022] [2022-01-10 23:52:17,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:17,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:17,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:17,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913736022] [2022-01-10 23:52:17,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913736022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:17,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:17,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:52:17,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947115981] [2022-01-10 23:52:17,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:17,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:52:17,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:17,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:52:17,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:52:17,332 INFO L87 Difference]: Start difference. First operand 3893 states and 6696 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:17,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:17,732 INFO L93 Difference]: Finished difference Result 4929 states and 8301 transitions. [2022-01-10 23:52:17,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 23:52:17,732 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-01-10 23:52:17,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:17,739 INFO L225 Difference]: With dead ends: 4929 [2022-01-10 23:52:17,739 INFO L226 Difference]: Without dead ends: 3928 [2022-01-10 23:52:17,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-01-10 23:52:17,742 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 1461 mSDsluCounter, 2952 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 3612 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:17,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1461 Valid, 3612 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3928 states. [2022-01-10 23:52:17,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3928 to 3783. [2022-01-10 23:52:17,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3783 states, 3782 states have (on average 1.721311475409836) internal successors, (6510), 3782 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:18,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3783 states to 3783 states and 6510 transitions. [2022-01-10 23:52:18,003 INFO L78 Accepts]: Start accepts. Automaton has 3783 states and 6510 transitions. Word has length 95 [2022-01-10 23:52:18,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:18,003 INFO L470 AbstractCegarLoop]: Abstraction has 3783 states and 6510 transitions. [2022-01-10 23:52:18,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:18,003 INFO L276 IsEmpty]: Start isEmpty. Operand 3783 states and 6510 transitions. [2022-01-10 23:52:18,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 23:52:18,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:18,009 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] [2022-01-10 23:52:18,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 23:52:18,009 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:18,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:18,010 INFO L85 PathProgramCache]: Analyzing trace with hash -933067265, now seen corresponding path program 1 times [2022-01-10 23:52:18,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:18,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257231366] [2022-01-10 23:52:18,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:18,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:18,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:18,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:18,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:18,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257231366] [2022-01-10 23:52:18,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257231366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:18,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:18,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:52:18,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66782189] [2022-01-10 23:52:18,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:18,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:18,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:18,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:18,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:18,139 INFO L87 Difference]: Start difference. First operand 3783 states and 6510 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:18,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:18,408 INFO L93 Difference]: Finished difference Result 3872 states and 6629 transitions. [2022-01-10 23:52:18,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:52:18,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-01-10 23:52:18,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:18,415 INFO L225 Difference]: With dead ends: 3872 [2022-01-10 23:52:18,415 INFO L226 Difference]: Without dead ends: 3783 [2022-01-10 23:52:18,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:52:18,416 INFO L933 BasicCegarLoop]: 673 mSDtfsCounter, 539 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:18,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [539 Valid, 2085 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:18,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2022-01-10 23:52:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3783. [2022-01-10 23:52:18,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3783 states, 3782 states have (on average 1.7202538339502909) internal successors, (6506), 3782 states have internal predecessors, (6506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:18,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3783 states to 3783 states and 6506 transitions. [2022-01-10 23:52:18,686 INFO L78 Accepts]: Start accepts. Automaton has 3783 states and 6506 transitions. Word has length 96 [2022-01-10 23:52:18,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:18,686 INFO L470 AbstractCegarLoop]: Abstraction has 3783 states and 6506 transitions. [2022-01-10 23:52:18,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:18,686 INFO L276 IsEmpty]: Start isEmpty. Operand 3783 states and 6506 transitions. [2022-01-10 23:52:18,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 23:52:18,691 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:18,691 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 23:52:18,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 23:52:18,691 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:18,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:18,692 INFO L85 PathProgramCache]: Analyzing trace with hash 532173002, now seen corresponding path program 1 times [2022-01-10 23:52:18,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:18,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735359989] [2022-01-10 23:52:18,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:18,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:18,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:18,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:18,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735359989] [2022-01-10 23:52:18,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735359989] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:18,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:18,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:52:18,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932850144] [2022-01-10 23:52:18,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:18,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:18,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:18,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:18,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:18,778 INFO L87 Difference]: Start difference. First operand 3783 states and 6506 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:19,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:19,503 INFO L93 Difference]: Finished difference Result 7689 states and 13203 transitions. [2022-01-10 23:52:19,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:52:19,503 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-01-10 23:52:19,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:19,512 INFO L225 Difference]: With dead ends: 7689 [2022-01-10 23:52:19,512 INFO L226 Difference]: Without dead ends: 7084 [2022-01-10 23:52:19,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:52:19,515 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 610 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 2637 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 23:52:19,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [610 Valid, 2637 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:19,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7084 states. [2022-01-10 23:52:20,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7084 to 6876. [2022-01-10 23:52:20,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6876 states, 6875 states have (on average 1.739781818181818) internal successors, (11961), 6875 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 23:52:20,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6876 states to 6876 states and 11961 transitions. [2022-01-10 23:52:20,038 INFO L78 Accepts]: Start accepts. Automaton has 6876 states and 11961 transitions. Word has length 115 [2022-01-10 23:52:20,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:20,038 INFO L470 AbstractCegarLoop]: Abstraction has 6876 states and 11961 transitions. [2022-01-10 23:52:20,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:20,038 INFO L276 IsEmpty]: Start isEmpty. Operand 6876 states and 11961 transitions. [2022-01-10 23:52:20,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 23:52:20,048 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:20,048 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 23:52:20,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 23:52:20,049 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:20,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:20,049 INFO L85 PathProgramCache]: Analyzing trace with hash -2021234913, now seen corresponding path program 1 times [2022-01-10 23:52:20,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:20,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308514462] [2022-01-10 23:52:20,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:20,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:20,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:20,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:20,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308514462] [2022-01-10 23:52:20,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308514462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:20,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:20,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:52:20,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684626892] [2022-01-10 23:52:20,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:20,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:52:20,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:20,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:52:20,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:52:20,183 INFO L87 Difference]: Start difference. First operand 6876 states and 11961 transitions. Second operand has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 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 23:52:20,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:20,904 INFO L93 Difference]: Finished difference Result 7366 states and 12656 transitions. [2022-01-10 23:52:20,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 23:52:20,904 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 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 23:52:20,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:20,913 INFO L225 Difference]: With dead ends: 7366 [2022-01-10 23:52:20,913 INFO L226 Difference]: Without dead ends: 6531 [2022-01-10 23:52:20,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2022-01-10 23:52:20,916 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 2260 mSDsluCounter, 3576 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2260 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:20,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2260 Valid, 4412 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:52:20,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6531 states. [2022-01-10 23:52:21,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6531 to 6246. [2022-01-10 23:52:21,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6246 states, 6245 states have (on average 1.7518014411529224) internal successors, (10940), 6245 states have internal predecessors, (10940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:21,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6246 states to 6246 states and 10940 transitions. [2022-01-10 23:52:21,290 INFO L78 Accepts]: Start accepts. Automaton has 6246 states and 10940 transitions. Word has length 116 [2022-01-10 23:52:21,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:21,290 INFO L470 AbstractCegarLoop]: Abstraction has 6246 states and 10940 transitions. [2022-01-10 23:52:21,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 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 23:52:21,291 INFO L276 IsEmpty]: Start isEmpty. Operand 6246 states and 10940 transitions. [2022-01-10 23:52:21,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 23:52:21,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:21,299 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:21,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 23:52:21,299 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:21,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:21,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1567274747, now seen corresponding path program 1 times [2022-01-10 23:52:21,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:21,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849785363] [2022-01-10 23:52:21,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:21,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:21,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:21,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:21,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849785363] [2022-01-10 23:52:21,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849785363] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:21,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:21,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:52:21,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819474717] [2022-01-10 23:52:21,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:21,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:52:21,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:21,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:52:21,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:21,345 INFO L87 Difference]: Start difference. First operand 6246 states and 10940 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:22,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:22,049 INFO L93 Difference]: Finished difference Result 17318 states and 30308 transitions. [2022-01-10 23:52:22,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:52:22,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2022-01-10 23:52:22,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:22,065 INFO L225 Difference]: With dead ends: 17318 [2022-01-10 23:52:22,065 INFO L226 Difference]: Without dead ends: 11158 [2022-01-10 23:52:22,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:22,072 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 616 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:22,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 1234 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:22,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11158 states. [2022-01-10 23:52:22,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11158 to 10326. [2022-01-10 23:52:22,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10326 states, 10325 states have (on average 1.7603874092009686) internal successors, (18176), 10325 states have internal predecessors, (18176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10326 states to 10326 states and 18176 transitions. [2022-01-10 23:52:22,766 INFO L78 Accepts]: Start accepts. Automaton has 10326 states and 18176 transitions. Word has length 129 [2022-01-10 23:52:22,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:22,767 INFO L470 AbstractCegarLoop]: Abstraction has 10326 states and 18176 transitions. [2022-01-10 23:52:22,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:22,767 INFO L276 IsEmpty]: Start isEmpty. Operand 10326 states and 18176 transitions. [2022-01-10 23:52:22,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 23:52:22,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:22,782 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:22,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 23:52:22,782 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:22,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:22,783 INFO L85 PathProgramCache]: Analyzing trace with hash -43256444, now seen corresponding path program 1 times [2022-01-10 23:52:22,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:22,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459089241] [2022-01-10 23:52:22,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:22,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:22,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:22,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:22,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459089241] [2022-01-10 23:52:22,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459089241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:22,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:22,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:52:22,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470009829] [2022-01-10 23:52:22,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:22,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:52:22,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:22,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:52:22,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:22,842 INFO L87 Difference]: Start difference. First operand 10326 states and 18176 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:23,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:23,983 INFO L93 Difference]: Finished difference Result 30758 states and 54224 transitions. [2022-01-10 23:52:23,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:52:23,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2022-01-10 23:52:23,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:24,012 INFO L225 Difference]: With dead ends: 30758 [2022-01-10 23:52:24,012 INFO L226 Difference]: Without dead ends: 20518 [2022-01-10 23:52:24,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:24,022 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 614 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:24,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 1328 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:24,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20518 states. [2022-01-10 23:52:25,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20518 to 19686. [2022-01-10 23:52:25,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19686 states, 19685 states have (on average 1.769469138938278) internal successors, (34832), 19685 states have internal predecessors, (34832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:25,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19686 states to 19686 states and 34832 transitions. [2022-01-10 23:52:25,260 INFO L78 Accepts]: Start accepts. Automaton has 19686 states and 34832 transitions. Word has length 130 [2022-01-10 23:52:25,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:25,261 INFO L470 AbstractCegarLoop]: Abstraction has 19686 states and 34832 transitions. [2022-01-10 23:52:25,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:25,261 INFO L276 IsEmpty]: Start isEmpty. Operand 19686 states and 34832 transitions. [2022-01-10 23:52:25,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-01-10 23:52:25,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:25,286 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:25,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 23:52:25,286 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:25,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:25,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1025561676, now seen corresponding path program 1 times [2022-01-10 23:52:25,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:25,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262138945] [2022-01-10 23:52:25,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:25,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:25,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:25,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262138945] [2022-01-10 23:52:25,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262138945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:25,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:25,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:52:25,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778744015] [2022-01-10 23:52:25,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:25,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:52:25,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:25,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:52:25,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:25,334 INFO L87 Difference]: Start difference. First operand 19686 states and 34832 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:27,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:27,435 INFO L93 Difference]: Finished difference Result 58310 states and 103328 transitions. [2022-01-10 23:52:27,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:52:27,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-01-10 23:52:27,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:27,504 INFO L225 Difference]: With dead ends: 58310 [2022-01-10 23:52:27,504 INFO L226 Difference]: Without dead ends: 38710 [2022-01-10 23:52:27,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:27,525 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 612 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:27,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 1320 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:27,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38710 states. [2022-01-10 23:52:29,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38710 to 37878. [2022-01-10 23:52:29,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37878 states, 37877 states have (on average 1.775008580404995) internal successors, (67232), 37877 states have internal predecessors, (67232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37878 states to 37878 states and 67232 transitions. [2022-01-10 23:52:29,643 INFO L78 Accepts]: Start accepts. Automaton has 37878 states and 67232 transitions. Word has length 131 [2022-01-10 23:52:29,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:29,643 INFO L470 AbstractCegarLoop]: Abstraction has 37878 states and 67232 transitions. [2022-01-10 23:52:29,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:29,643 INFO L276 IsEmpty]: Start isEmpty. Operand 37878 states and 67232 transitions. [2022-01-10 23:52:29,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-10 23:52:29,693 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:29,693 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:29,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 23:52:29,693 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:29,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:29,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1537557794, now seen corresponding path program 1 times [2022-01-10 23:52:29,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:29,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698437328] [2022-01-10 23:52:29,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:29,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:29,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:29,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698437328] [2022-01-10 23:52:29,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698437328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:29,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:29,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:52:29,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774342217] [2022-01-10 23:52:29,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:29,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:52:29,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:29,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:52:29,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:29,926 INFO L87 Difference]: Start difference. First operand 37878 states and 67232 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:33,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:33,795 INFO L93 Difference]: Finished difference Result 107318 states and 190352 transitions. [2022-01-10 23:52:33,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:52:33,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2022-01-10 23:52:33,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:33,914 INFO L225 Difference]: With dead ends: 107318 [2022-01-10 23:52:33,914 INFO L226 Difference]: Without dead ends: 69526 [2022-01-10 23:52:33,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:33,946 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 610 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:33,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [610 Valid, 1272 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:33,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69526 states. [2022-01-10 23:52:38,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69526 to 68694. [2022-01-10 23:52:38,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68694 states, 68693 states have (on average 1.7725241290961233) internal successors, (121760), 68693 states have internal predecessors, (121760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:38,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68694 states to 68694 states and 121760 transitions. [2022-01-10 23:52:38,348 INFO L78 Accepts]: Start accepts. Automaton has 68694 states and 121760 transitions. Word has length 132 [2022-01-10 23:52:38,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:38,348 INFO L470 AbstractCegarLoop]: Abstraction has 68694 states and 121760 transitions. [2022-01-10 23:52:38,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:38,348 INFO L276 IsEmpty]: Start isEmpty. Operand 68694 states and 121760 transitions. [2022-01-10 23:52:38,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-01-10 23:52:38,480 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:38,480 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:38,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 23:52:38,481 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:38,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:38,481 INFO L85 PathProgramCache]: Analyzing trace with hash -958862858, now seen corresponding path program 1 times [2022-01-10 23:52:38,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:38,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040490539] [2022-01-10 23:52:38,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:38,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:38,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:38,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:52:38,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:38,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040490539] [2022-01-10 23:52:38,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040490539] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:38,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:38,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:52:38,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126451728] [2022-01-10 23:52:38,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:38,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:52:38,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:38,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:52:38,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:38,536 INFO L87 Difference]: Start difference. First operand 68694 states and 121760 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:46,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:52:46,660 INFO L93 Difference]: Finished difference Result 193622 states and 342800 transitions. [2022-01-10 23:52:46,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:52:46,661 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2022-01-10 23:52:46,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:52:46,952 INFO L225 Difference]: With dead ends: 193622 [2022-01-10 23:52:46,952 INFO L226 Difference]: Without dead ends: 125014 [2022-01-10 23:52:47,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:52:47,014 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 608 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:52:47,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 1272 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:52:47,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125014 states. [2022-01-10 23:52:54,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125014 to 124182. [2022-01-10 23:52:54,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124182 states, 124181 states have (on average 1.7674845588294505) internal successors, (219488), 124181 states have internal predecessors, (219488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:55,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124182 states to 124182 states and 219488 transitions. [2022-01-10 23:52:55,386 INFO L78 Accepts]: Start accepts. Automaton has 124182 states and 219488 transitions. Word has length 133 [2022-01-10 23:52:55,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:52:55,386 INFO L470 AbstractCegarLoop]: Abstraction has 124182 states and 219488 transitions. [2022-01-10 23:52:55,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:52:55,387 INFO L276 IsEmpty]: Start isEmpty. Operand 124182 states and 219488 transitions. [2022-01-10 23:52:55,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 23:52:55,605 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:52:55,605 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:52:55,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 23:52:55,606 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:52:55,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:52:55,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1867721071, now seen corresponding path program 1 times [2022-01-10 23:52:55,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:52:55,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387251705] [2022-01-10 23:52:55,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:52:55,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:52:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:52:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 23:52:55,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:52:55,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387251705] [2022-01-10 23:52:55,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387251705] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:52:55,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:52:55,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:52:55,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558626107] [2022-01-10 23:52:55,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:52:55,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:52:55,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:52:55,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:52:55,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:52:55,996 INFO L87 Difference]: Start difference. First operand 124182 states and 219488 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:03,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:03,454 INFO L93 Difference]: Finished difference Result 125963 states and 221959 transitions. [2022-01-10 23:53:03,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:53:03,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 134 [2022-01-10 23:53:03,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:03,740 INFO L225 Difference]: With dead ends: 125963 [2022-01-10 23:53:03,740 INFO L226 Difference]: Without dead ends: 125830 [2022-01-10 23:53:03,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:53:03,771 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 1417 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:03,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1417 Valid, 2420 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:53:03,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125830 states.