/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec6_product15.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:17:43,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:17:43,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:17:43,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:17:43,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:17:43,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:17:43,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:17:43,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:17:43,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:17:43,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:17:43,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:17:43,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:17:43,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:17:43,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:17:43,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:17:43,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:17:43,932 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:17:43,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:17:43,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:17:43,938 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:17:43,940 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:17:43,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:17:43,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:17:43,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:17:43,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:17:43,962 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:17:43,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:17:43,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:17:43,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:17:43,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:17:43,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:17:43,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:17:43,966 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:17:43,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:17:43,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:17:43,968 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:17:43,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:17:43,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:17:43,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:17:43,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:17:43,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:17:43,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:17:44,020 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:17:44,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:17:44,020 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:17:44,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:17:44,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:17:44,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:17:44,022 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:17:44,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:17:44,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:17:44,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:17:44,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:17:44,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:17:44,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:17:44,024 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:17:44,024 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:17:44,024 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:17:44,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:17:44,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:17:44,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:17:44,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:17:44,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:17:44,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:17:44,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:17:44,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:17:44,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:17:44,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:17:44,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:17:44,027 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:17:44,027 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:17:44,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:17:44,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:17:44,027 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:17:44,028 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:17:44,028 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:17:44,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:17:44,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:17:44,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:17:44,297 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:17:44,299 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:17:44,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec6_product15.cil.c [2022-01-10 12:17:44,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bbfee47d/0e1e896d4df04a37859d6e0e90cde17d/FLAG5f493b54e [2022-01-10 12:17:44,926 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:17:44,926 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec6_product15.cil.c [2022-01-10 12:17:44,952 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bbfee47d/0e1e896d4df04a37859d6e0e90cde17d/FLAG5f493b54e [2022-01-10 12:17:45,379 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bbfee47d/0e1e896d4df04a37859d6e0e90cde17d [2022-01-10 12:17:45,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:17:45,382 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:17:45,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:17:45,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:17:45,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:17:45,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:17:45" (1/1) ... [2022-01-10 12:17:45,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@299ca5c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:45, skipping insertion in model container [2022-01-10 12:17:45,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:17:45" (1/1) ... [2022-01-10 12:17:45,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:17:45,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:17:45,684 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_spec6_product15.cil.c[6819,6832] [2022-01-10 12:17:46,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:17:46,058 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:17:46,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:17:46,087 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_spec6_product15.cil.c[6819,6832] [2022-01-10 12:17:46,169 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:17:46,176 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:17:46,198 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_spec6_product15.cil.c[6819,6832] [2022-01-10 12:17:46,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:17:46,292 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:17:46,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:46 WrapperNode [2022-01-10 12:17:46,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:17:46,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:17:46,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:17:46,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:17:46,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:46" (1/1) ... [2022-01-10 12:17:46,344 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:46" (1/1) ... [2022-01-10 12:17:46,425 INFO L137 Inliner]: procedures = 128, calls = 203, calls flagged for inlining = 113, calls inlined = 133, statements flattened = 1992 [2022-01-10 12:17:46,425 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:17:46,426 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:17:46,426 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:17:46,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:17:46,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:46" (1/1) ... [2022-01-10 12:17:46,434 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:46" (1/1) ... [2022-01-10 12:17:46,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:46" (1/1) ... [2022-01-10 12:17:46,445 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:46" (1/1) ... [2022-01-10 12:17:46,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:46" (1/1) ... [2022-01-10 12:17:46,512 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:46" (1/1) ... [2022-01-10 12:17:46,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:46" (1/1) ... [2022-01-10 12:17:46,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:17:46,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:17:46,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:17:46,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:17:46,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:46" (1/1) ... [2022-01-10 12:17:46,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:17:46,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:17:46,585 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:17:46,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:17:46,620 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:17:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:17:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:17:46,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:17:46,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:17:46,789 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:17:46,790 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:17:47,919 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:17:47,934 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:17:47,934 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:17:47,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:17:47 BoogieIcfgContainer [2022-01-10 12:17:47,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:17:47,938 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:17:47,939 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:17:47,940 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:17:47,941 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:17:47" (1/1) ... [2022-01-10 12:17:48,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:17:48 BasicIcfg [2022-01-10 12:17:48,442 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:17:48,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:17:48,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:17:48,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:17:48,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:17:45" (1/4) ... [2022-01-10 12:17:48,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7576271e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:17:48, skipping insertion in model container [2022-01-10 12:17:48,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:17:46" (2/4) ... [2022-01-10 12:17:48,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7576271e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:17:48, skipping insertion in model container [2022-01-10 12:17:48,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:17:47" (3/4) ... [2022-01-10 12:17:48,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7576271e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:17:48, skipping insertion in model container [2022-01-10 12:17:48,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:17:48" (4/4) ... [2022-01-10 12:17:48,449 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec6_product15.cil.cTransformedIcfg [2022-01-10 12:17:48,453 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:17:48,453 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 12:17:48,505 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:17:48,515 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:17:48,516 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 12:17:48,546 INFO L276 IsEmpty]: Start isEmpty. Operand has 466 states, 463 states have (on average 1.695464362850972) internal successors, (785), 465 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:48,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 12:17:48,567 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:48,568 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] [2022-01-10 12:17:48,569 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:48,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:48,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1548731871, now seen corresponding path program 1 times [2022-01-10 12:17:48,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:48,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411728181] [2022-01-10 12:17:48,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:48,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:48,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:48,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:48,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411728181] [2022-01-10 12:17:48,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411728181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:48,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:48,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:17:48,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705118575] [2022-01-10 12:17:48,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:48,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:17:48,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:48,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:17:48,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:17:48,979 INFO L87 Difference]: Start difference. First operand has 466 states, 463 states have (on average 1.695464362850972) internal successors, (785), 465 states have internal predecessors, (785), 0 states have call successors, (0), 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 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:49,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:49,034 INFO L93 Difference]: Finished difference Result 671 states and 1110 transitions. [2022-01-10 12:17:49,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:17:49,044 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-01-10 12:17:49,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:49,061 INFO L225 Difference]: With dead ends: 671 [2022-01-10 12:17:49,061 INFO L226 Difference]: Without dead ends: 414 [2022-01-10 12:17:49,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:17:49,076 INFO L933 BasicCegarLoop]: 779 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, 779 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:49,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:49,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-10 12:17:49,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2022-01-10 12:17:49,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 412 states have (on average 1.703883495145631) internal successors, (702), 413 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:49,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 702 transitions. [2022-01-10 12:17:49,141 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 702 transitions. Word has length 57 [2022-01-10 12:17:49,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:49,141 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 702 transitions. [2022-01-10 12:17:49,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:49,141 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 702 transitions. [2022-01-10 12:17:49,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 12:17:49,143 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:49,144 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] [2022-01-10 12:17:49,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:17:49,144 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:49,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:49,145 INFO L85 PathProgramCache]: Analyzing trace with hash 664055223, now seen corresponding path program 1 times [2022-01-10 12:17:49,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:49,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189488157] [2022-01-10 12:17:49,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:49,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:49,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:49,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:49,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189488157] [2022-01-10 12:17:49,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189488157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:49,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:49,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:17:49,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741604274] [2022-01-10 12:17:49,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:49,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:17:49,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:49,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:17:49,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:17:49,409 INFO L87 Difference]: Start difference. First operand 414 states and 702 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:49,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:49,512 INFO L93 Difference]: Finished difference Result 809 states and 1376 transitions. [2022-01-10 12:17:49,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:17:49,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2022-01-10 12:17:49,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:49,515 INFO L225 Difference]: With dead ends: 809 [2022-01-10 12:17:49,515 INFO L226 Difference]: Without dead ends: 414 [2022-01-10 12:17:49,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:17:49,519 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 677 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 696 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 12:17:49,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [677 Valid, 696 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:49,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-10 12:17:49,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2022-01-10 12:17:49,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 412 states have (on average 1.6990291262135921) internal successors, (700), 413 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:49,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 700 transitions. [2022-01-10 12:17:49,557 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 700 transitions. Word has length 58 [2022-01-10 12:17:49,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:49,558 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 700 transitions. [2022-01-10 12:17:49,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:49,560 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 700 transitions. [2022-01-10 12:17:49,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 12:17:49,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:49,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:49,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:17:49,569 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:49,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:49,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2134607223, now seen corresponding path program 1 times [2022-01-10 12:17:49,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:49,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416885389] [2022-01-10 12:17:49,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:49,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:49,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:49,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:49,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416885389] [2022-01-10 12:17:49,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416885389] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:49,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:49,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:17:49,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720813732] [2022-01-10 12:17:49,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:49,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:49,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:49,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:49,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:49,775 INFO L87 Difference]: Start difference. First operand 414 states and 700 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:49,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:49,994 INFO L93 Difference]: Finished difference Result 1938 states and 3296 transitions. [2022-01-10 12:17:49,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:17:49,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-01-10 12:17:49,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:50,003 INFO L225 Difference]: With dead ends: 1938 [2022-01-10 12:17:50,004 INFO L226 Difference]: Without dead ends: 1548 [2022-01-10 12:17:50,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:17:50,011 INFO L933 BasicCegarLoop]: 1323 mSDtfsCounter, 3283 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3283 SdHoareTripleChecker+Valid, 3295 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:50,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3283 Valid, 3295 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:50,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2022-01-10 12:17:50,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 414. [2022-01-10 12:17:50,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 412 states have (on average 1.6966019417475728) internal successors, (699), 413 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:50,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 699 transitions. [2022-01-10 12:17:50,048 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 699 transitions. Word has length 60 [2022-01-10 12:17:50,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:50,049 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 699 transitions. [2022-01-10 12:17:50,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:50,049 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 699 transitions. [2022-01-10 12:17:50,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 12:17:50,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:50,050 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] [2022-01-10 12:17:50,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:17:50,051 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:50,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:50,051 INFO L85 PathProgramCache]: Analyzing trace with hash -871742535, now seen corresponding path program 1 times [2022-01-10 12:17:50,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:50,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128943795] [2022-01-10 12:17:50,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:50,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:50,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:50,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:50,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128943795] [2022-01-10 12:17:50,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128943795] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:50,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:50,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:17:50,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700672724] [2022-01-10 12:17:50,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:50,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:17:50,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:50,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:17:50,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:17:50,187 INFO L87 Difference]: Start difference. First operand 414 states and 699 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:50,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:50,232 INFO L93 Difference]: Finished difference Result 813 states and 1376 transitions. [2022-01-10 12:17:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:17:50,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-10 12:17:50,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:50,236 INFO L225 Difference]: With dead ends: 813 [2022-01-10 12:17:50,236 INFO L226 Difference]: Without dead ends: 428 [2022-01-10 12:17:50,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:17:50,237 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 678 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:50,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [678 Valid, 735 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:50,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-01-10 12:17:50,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 414. [2022-01-10 12:17:50,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 412 states have (on average 1.6941747572815533) internal successors, (698), 413 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:50,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 698 transitions. [2022-01-10 12:17:50,263 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 698 transitions. Word has length 61 [2022-01-10 12:17:50,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:50,264 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 698 transitions. [2022-01-10 12:17:50,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:50,264 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 698 transitions. [2022-01-10 12:17:50,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 12:17:50,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:50,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:17:50,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:17:50,266 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:50,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:50,266 INFO L85 PathProgramCache]: Analyzing trace with hash 874092086, now seen corresponding path program 1 times [2022-01-10 12:17:50,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:50,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527688606] [2022-01-10 12:17:50,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:50,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:50,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:50,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:50,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527688606] [2022-01-10 12:17:50,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527688606] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:50,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:50,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:17:50,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500644767] [2022-01-10 12:17:50,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:50,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:50,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:50,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:50,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:50,418 INFO L87 Difference]: Start difference. First operand 414 states and 698 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:50,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:50,575 INFO L93 Difference]: Finished difference Result 1176 states and 1994 transitions. [2022-01-10 12:17:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:17:50,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-01-10 12:17:50,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:50,579 INFO L225 Difference]: With dead ends: 1176 [2022-01-10 12:17:50,579 INFO L226 Difference]: Without dead ends: 796 [2022-01-10 12:17:50,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:17:50,581 INFO L933 BasicCegarLoop]: 707 mSDtfsCounter, 3206 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3206 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:50,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3206 Valid, 1428 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:50,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-01-10 12:17:50,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 414. [2022-01-10 12:17:50,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 412 states have (on average 1.6893203883495145) internal successors, (696), 413 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:50,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 696 transitions. [2022-01-10 12:17:50,616 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 696 transitions. Word has length 62 [2022-01-10 12:17:50,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:50,617 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 696 transitions. [2022-01-10 12:17:50,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:50,617 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 696 transitions. [2022-01-10 12:17:50,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 12:17:50,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:50,618 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] [2022-01-10 12:17:50,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:17:50,618 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:50,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:50,619 INFO L85 PathProgramCache]: Analyzing trace with hash -267567687, now seen corresponding path program 1 times [2022-01-10 12:17:50,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:50,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637223719] [2022-01-10 12:17:50,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:50,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:50,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:50,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:50,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637223719] [2022-01-10 12:17:50,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637223719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:50,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:50,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:17:50,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227852363] [2022-01-10 12:17:50,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:50,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:50,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:50,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:50,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:50,776 INFO L87 Difference]: Start difference. First operand 414 states and 696 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:50,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:50,972 INFO L93 Difference]: Finished difference Result 1115 states and 1791 transitions. [2022-01-10 12:17:50,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:17:50,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-10 12:17:50,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:50,977 INFO L225 Difference]: With dead ends: 1115 [2022-01-10 12:17:50,977 INFO L226 Difference]: Without dead ends: 990 [2022-01-10 12:17:50,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:17:50,980 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 1729 mSDsluCounter, 1907 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1729 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:50,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1729 Valid, 2604 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:50,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2022-01-10 12:17:51,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 532. [2022-01-10 12:17:51,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 530 states have (on average 1.6603773584905661) internal successors, (880), 531 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:51,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 880 transitions. [2022-01-10 12:17:51,035 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 880 transitions. Word has length 64 [2022-01-10 12:17:51,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:51,037 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 880 transitions. [2022-01-10 12:17:51,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:51,037 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 880 transitions. [2022-01-10 12:17:51,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 12:17:51,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:51,039 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] [2022-01-10 12:17:51,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:17:51,039 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:51,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:51,040 INFO L85 PathProgramCache]: Analyzing trace with hash 938224445, now seen corresponding path program 1 times [2022-01-10 12:17:51,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:51,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470354375] [2022-01-10 12:17:51,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:51,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:51,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:51,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:51,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470354375] [2022-01-10 12:17:51,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470354375] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:51,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:51,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:17:51,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347033708] [2022-01-10 12:17:51,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:51,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:17:51,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:51,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:17:51,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:17:51,201 INFO L87 Difference]: Start difference. First operand 532 states and 880 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:51,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:51,364 INFO L93 Difference]: Finished difference Result 884 states and 1427 transitions. [2022-01-10 12:17:51,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 12:17:51,364 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 12:17:51,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:51,367 INFO L225 Difference]: With dead ends: 884 [2022-01-10 12:17:51,367 INFO L226 Difference]: Without dead ends: 672 [2022-01-10 12:17:51,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-10 12:17:51,370 INFO L933 BasicCegarLoop]: 710 mSDtfsCounter, 1315 mSDsluCounter, 2662 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 3372 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:51,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1315 Valid, 3372 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:51,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-01-10 12:17:51,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 515. [2022-01-10 12:17:51,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 513 states have (on average 1.6569200779727096) internal successors, (850), 514 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:51,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 850 transitions. [2022-01-10 12:17:51,412 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 850 transitions. Word has length 65 [2022-01-10 12:17:51,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:51,412 INFO L470 AbstractCegarLoop]: Abstraction has 515 states and 850 transitions. [2022-01-10 12:17:51,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:51,412 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 850 transitions. [2022-01-10 12:17:51,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 12:17:51,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:51,413 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] [2022-01-10 12:17:51,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:17:51,414 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:51,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:51,414 INFO L85 PathProgramCache]: Analyzing trace with hash -268647910, now seen corresponding path program 1 times [2022-01-10 12:17:51,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:51,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123678345] [2022-01-10 12:17:51,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:51,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:51,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:51,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:51,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123678345] [2022-01-10 12:17:51,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123678345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:51,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:51,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:17:51,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824826222] [2022-01-10 12:17:51,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:51,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:51,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:51,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:51,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:51,535 INFO L87 Difference]: Start difference. First operand 515 states and 850 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:51,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:51,796 INFO L93 Difference]: Finished difference Result 1783 states and 2828 transitions. [2022-01-10 12:17:51,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:17:51,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-10 12:17:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:51,803 INFO L225 Difference]: With dead ends: 1783 [2022-01-10 12:17:51,803 INFO L226 Difference]: Without dead ends: 1549 [2022-01-10 12:17:51,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:17:51,805 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 1649 mSDsluCounter, 2231 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 2967 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:51,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1649 Valid, 2967 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:51,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2022-01-10 12:17:51,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 931. [2022-01-10 12:17:51,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 931 states, 929 states have (on average 1.665231431646932) internal successors, (1547), 930 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:51,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 931 states to 931 states and 1547 transitions. [2022-01-10 12:17:51,889 INFO L78 Accepts]: Start accepts. Automaton has 931 states and 1547 transitions. Word has length 68 [2022-01-10 12:17:51,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:51,889 INFO L470 AbstractCegarLoop]: Abstraction has 931 states and 1547 transitions. [2022-01-10 12:17:51,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:51,890 INFO L276 IsEmpty]: Start isEmpty. Operand 931 states and 1547 transitions. [2022-01-10 12:17:51,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:17:51,891 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:51,891 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] [2022-01-10 12:17:51,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:17:51,892 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:51,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:51,892 INFO L85 PathProgramCache]: Analyzing trace with hash 940186903, now seen corresponding path program 1 times [2022-01-10 12:17:51,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:51,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767501196] [2022-01-10 12:17:51,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:51,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:52,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:52,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767501196] [2022-01-10 12:17:52,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767501196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:52,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:52,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:17:52,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248923425] [2022-01-10 12:17:52,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:52,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:17:52,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:52,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:17:52,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:17:52,028 INFO L87 Difference]: Start difference. First operand 931 states and 1547 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:52,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:52,451 INFO L93 Difference]: Finished difference Result 2804 states and 4511 transitions. [2022-01-10 12:17:52,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:17:52,452 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 12:17:52,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:52,463 INFO L225 Difference]: With dead ends: 2804 [2022-01-10 12:17:52,463 INFO L226 Difference]: Without dead ends: 2398 [2022-01-10 12:17:52,465 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 12:17:52,465 INFO L933 BasicCegarLoop]: 962 mSDtfsCounter, 1207 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:52,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1207 Valid, 3185 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:17:52,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2022-01-10 12:17:52,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 1753. [2022-01-10 12:17:52,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1753 states, 1751 states have (on average 1.6727584237578526) internal successors, (2929), 1752 states have internal predecessors, (2929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:52,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1753 states to 1753 states and 2929 transitions. [2022-01-10 12:17:52,668 INFO L78 Accepts]: Start accepts. Automaton has 1753 states and 2929 transitions. Word has length 69 [2022-01-10 12:17:52,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:52,668 INFO L470 AbstractCegarLoop]: Abstraction has 1753 states and 2929 transitions. [2022-01-10 12:17:52,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:52,668 INFO L276 IsEmpty]: Start isEmpty. Operand 1753 states and 2929 transitions. [2022-01-10 12:17:52,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:17:52,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:52,671 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] [2022-01-10 12:17:52,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:17:52,671 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:52,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:52,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1709103989, now seen corresponding path program 1 times [2022-01-10 12:17:52,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:52,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635602641] [2022-01-10 12:17:52,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:52,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:52,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:17:52,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:52,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635602641] [2022-01-10 12:17:52,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635602641] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:52,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:52,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:17:52,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643508362] [2022-01-10 12:17:52,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:52,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:17:52,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:52,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:17:52,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:17:52,800 INFO L87 Difference]: Start difference. First operand 1753 states and 2929 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:53,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:53,061 INFO L93 Difference]: Finished difference Result 2498 states and 4059 transitions. [2022-01-10 12:17:53,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:17:53,061 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 12:17:53,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:53,068 INFO L225 Difference]: With dead ends: 2498 [2022-01-10 12:17:53,068 INFO L226 Difference]: Without dead ends: 1734 [2022-01-10 12:17:53,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:17:53,071 INFO L933 BasicCegarLoop]: 682 mSDtfsCounter, 1317 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:17:53,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1317 Valid, 2188 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:53,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2022-01-10 12:17:53,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1676. [2022-01-10 12:17:53,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1674 states have (on average 1.6666666666666667) internal successors, (2790), 1675 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:53,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2790 transitions. [2022-01-10 12:17:53,223 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2790 transitions. Word has length 69 [2022-01-10 12:17:53,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:53,223 INFO L470 AbstractCegarLoop]: Abstraction has 1676 states and 2790 transitions. [2022-01-10 12:17:53,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:53,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2790 transitions. [2022-01-10 12:17:53,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 12:17:53,226 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:53,227 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] [2022-01-10 12:17:53,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:17:53,227 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:53,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:53,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1558614648, now seen corresponding path program 1 times [2022-01-10 12:17:53,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:53,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981866918] [2022-01-10 12:17:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:53,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:53,296 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 12:17:53,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:53,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981866918] [2022-01-10 12:17:53,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981866918] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:53,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:53,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:17:53,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972948796] [2022-01-10 12:17:53,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:53,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:17:53,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:53,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:17:53,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:17:53,298 INFO L87 Difference]: Start difference. First operand 1676 states and 2790 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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 12:17:53,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:53,585 INFO L93 Difference]: Finished difference Result 4746 states and 7888 transitions. [2022-01-10 12:17:53,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:17:53,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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 12:17:53,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:53,599 INFO L225 Difference]: With dead ends: 4746 [2022-01-10 12:17:53,600 INFO L226 Difference]: Without dead ends: 3107 [2022-01-10 12:17:53,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:17:53,604 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 630 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 1268 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 12:17:53,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 1268 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:53,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2022-01-10 12:17:53,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 2356. [2022-01-10 12:17:53,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 2354 states have (on average 1.7000849617672047) internal successors, (4002), 2355 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:53,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 4002 transitions. [2022-01-10 12:17:53,819 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 4002 transitions. Word has length 87 [2022-01-10 12:17:53,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:53,819 INFO L470 AbstractCegarLoop]: Abstraction has 2356 states and 4002 transitions. [2022-01-10 12:17:53,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 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 12:17:53,820 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 4002 transitions. [2022-01-10 12:17:53,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 12:17:53,824 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:53,824 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] [2022-01-10 12:17:53,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:17:53,825 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:53,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:53,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1256326795, now seen corresponding path program 1 times [2022-01-10 12:17:53,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:53,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830235707] [2022-01-10 12:17:53,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:53,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:53,898 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 12:17:53,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:53,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830235707] [2022-01-10 12:17:53,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830235707] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:53,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:53,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:17:53,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339018970] [2022-01-10 12:17:53,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:53,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:17:53,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:53,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:17:53,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:17:53,900 INFO L87 Difference]: Start difference. First operand 2356 states and 4002 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 12:17:54,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:54,249 INFO L93 Difference]: Finished difference Result 6946 states and 11828 transitions. [2022-01-10 12:17:54,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:17:54,251 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 12:17:54,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:54,272 INFO L225 Difference]: With dead ends: 6946 [2022-01-10 12:17:54,272 INFO L226 Difference]: Without dead ends: 4627 [2022-01-10 12:17:54,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:17:54,278 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 628 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1354 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 12:17:54,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 1354 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:54,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2022-01-10 12:17:54,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 3876. [2022-01-10 12:17:54,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3876 states, 3874 states have (on average 1.7361899845121322) internal successors, (6726), 3875 states have internal predecessors, (6726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:54,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3876 states to 3876 states and 6726 transitions. [2022-01-10 12:17:54,583 INFO L78 Accepts]: Start accepts. Automaton has 3876 states and 6726 transitions. Word has length 88 [2022-01-10 12:17:54,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:54,583 INFO L470 AbstractCegarLoop]: Abstraction has 3876 states and 6726 transitions. [2022-01-10 12:17:54,583 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 12:17:54,584 INFO L276 IsEmpty]: Start isEmpty. Operand 3876 states and 6726 transitions. [2022-01-10 12:17:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 12:17:54,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:54,591 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] [2022-01-10 12:17:54,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:17:54,591 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:54,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:54,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2073102687, now seen corresponding path program 1 times [2022-01-10 12:17:54,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:54,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440232088] [2022-01-10 12:17:54,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:54,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:54,679 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 12:17:54,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:54,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440232088] [2022-01-10 12:17:54,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440232088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:54,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:54,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:17:54,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7866947] [2022-01-10 12:17:54,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:54,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:17:54,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:54,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:17:54,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:17:54,681 INFO L87 Difference]: Start difference. First operand 3876 states and 6726 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 12:17:55,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:17:55,146 INFO L93 Difference]: Finished difference Result 11458 states and 19920 transitions. [2022-01-10 12:17:55,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:17:55,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 12:17:55,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:17:55,175 INFO L225 Difference]: With dead ends: 11458 [2022-01-10 12:17:55,176 INFO L226 Difference]: Without dead ends: 7619 [2022-01-10 12:17:55,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:17:55,182 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 626 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 1354 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 12:17:55,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 1354 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:17:55,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7619 states. [2022-01-10 12:17:55,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7619 to 6868. [2022-01-10 12:17:55,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6868 states, 6866 states have (on average 1.7602679871832216) internal successors, (12086), 6867 states have internal predecessors, (12086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:17:55,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6868 states to 6868 states and 12086 transitions. [2022-01-10 12:17:55,623 INFO L78 Accepts]: Start accepts. Automaton has 6868 states and 12086 transitions. Word has length 89 [2022-01-10 12:17:55,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:17:55,623 INFO L470 AbstractCegarLoop]: Abstraction has 6868 states and 12086 transitions. [2022-01-10 12:17:55,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 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 12:17:55,624 INFO L276 IsEmpty]: Start isEmpty. Operand 6868 states and 12086 transitions. [2022-01-10 12:17:55,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 12:17:55,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:17:55,637 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] [2022-01-10 12:17:55,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:17:55,637 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:17:55,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:17:55,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1184572203, now seen corresponding path program 1 times [2022-01-10 12:17:55,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:17:55,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16890471] [2022-01-10 12:17:55,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:17:55,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:17:55,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:17:55,806 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 12:17:55,806 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:17:55,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16890471] [2022-01-10 12:17:55,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16890471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:17:55,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:17:55,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 12:17:55,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823164745] [2022-01-10 12:17:55,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:17:55,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:17:55,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:17:55,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:17:55,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:17:55,808 INFO L87 Difference]: Start difference. First operand 6868 states and 12086 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:00,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:00,374 INFO L93 Difference]: Finished difference Result 26081 states and 42761 transitions. [2022-01-10 12:18:00,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-10 12:18:00,375 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-01-10 12:18:00,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:00,444 INFO L225 Difference]: With dead ends: 26081 [2022-01-10 12:18:00,444 INFO L226 Difference]: Without dead ends: 25971 [2022-01-10 12:18:00,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3498 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1587, Invalid=7155, Unknown=0, NotChecked=0, Total=8742 [2022-01-10 12:18:00,456 INFO L933 BasicCegarLoop]: 1415 mSDtfsCounter, 10401 mSDsluCounter, 11915 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10401 SdHoareTripleChecker+Valid, 13330 SdHoareTripleChecker+Invalid, 996 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:00,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10401 Valid, 13330 Invalid, 996 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 12:18:00,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25971 states. [2022-01-10 12:18:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25971 to 10613. [2022-01-10 12:18:01,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10613 states, 10611 states have (on average 1.7536518707002167) internal successors, (18608), 10612 states have internal predecessors, (18608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:01,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10613 states to 10613 states and 18608 transitions. [2022-01-10 12:18:01,152 INFO L78 Accepts]: Start accepts. Automaton has 10613 states and 18608 transitions. Word has length 90 [2022-01-10 12:18:01,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:01,152 INFO L470 AbstractCegarLoop]: Abstraction has 10613 states and 18608 transitions. [2022-01-10 12:18:01,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:01,153 INFO L276 IsEmpty]: Start isEmpty. Operand 10613 states and 18608 transitions. [2022-01-10 12:18:01,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 12:18:01,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:01,174 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] [2022-01-10 12:18:01,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:18:01,175 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:18:01,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:01,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1407992627, now seen corresponding path program 1 times [2022-01-10 12:18:01,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:01,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085795340] [2022-01-10 12:18:01,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:01,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:01,328 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 12:18:01,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:01,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085795340] [2022-01-10 12:18:01,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085795340] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:01,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:01,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:18:01,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780683273] [2022-01-10 12:18:01,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:01,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:18:01,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:01,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:18:01,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:18:01,329 INFO L87 Difference]: Start difference. First operand 10613 states and 18608 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:02,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:02,458 INFO L93 Difference]: Finished difference Result 29485 states and 51262 transitions. [2022-01-10 12:18:02,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:18:02,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-01-10 12:18:02,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:02,508 INFO L225 Difference]: With dead ends: 29485 [2022-01-10 12:18:02,509 INFO L226 Difference]: Without dead ends: 18909 [2022-01-10 12:18:02,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:18:02,530 INFO L933 BasicCegarLoop]: 1199 mSDtfsCounter, 1176 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:02,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1176 Valid, 1832 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:18:02,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18909 states. [2022-01-10 12:18:03,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18909 to 10373. [2022-01-10 12:18:03,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10373 states, 10371 states have (on average 1.738694436409218) internal successors, (18032), 10372 states have internal predecessors, (18032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:03,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10373 states to 10373 states and 18032 transitions. [2022-01-10 12:18:03,372 INFO L78 Accepts]: Start accepts. Automaton has 10373 states and 18032 transitions. Word has length 90 [2022-01-10 12:18:03,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:03,373 INFO L470 AbstractCegarLoop]: Abstraction has 10373 states and 18032 transitions. [2022-01-10 12:18:03,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:03,373 INFO L276 IsEmpty]: Start isEmpty. Operand 10373 states and 18032 transitions. [2022-01-10 12:18:03,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 12:18:03,392 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:03,392 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] [2022-01-10 12:18:03,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:18:03,392 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:18:03,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:03,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1747972372, now seen corresponding path program 1 times [2022-01-10 12:18:03,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:03,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451285153] [2022-01-10 12:18:03,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:03,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:03,592 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 12:18:03,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:03,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451285153] [2022-01-10 12:18:03,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451285153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:03,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:03,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:18:03,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798440342] [2022-01-10 12:18:03,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:03,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:18:03,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:03,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:18:03,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:18:03,594 INFO L87 Difference]: Start difference. First operand 10373 states and 18032 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:05,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:05,872 INFO L93 Difference]: Finished difference Result 17628 states and 28719 transitions. [2022-01-10 12:18:05,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-10 12:18:05,872 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 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 12:18:05,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:05,909 INFO L225 Difference]: With dead ends: 17628 [2022-01-10 12:18:05,910 INFO L226 Difference]: Without dead ends: 16927 [2022-01-10 12:18:05,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2022-01-10 12:18:05,919 INFO L933 BasicCegarLoop]: 1085 mSDtfsCounter, 1527 mSDsluCounter, 4497 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 5582 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:05,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1527 Valid, 5582 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:18:05,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16927 states. [2022-01-10 12:18:06,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16927 to 11507. [2022-01-10 12:18:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11507 states, 11505 states have (on average 1.71664493698392) internal successors, (19750), 11506 states have internal predecessors, (19750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:06,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11507 states to 11507 states and 19750 transitions. [2022-01-10 12:18:06,831 INFO L78 Accepts]: Start accepts. Automaton has 11507 states and 19750 transitions. Word has length 91 [2022-01-10 12:18:06,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:06,831 INFO L470 AbstractCegarLoop]: Abstraction has 11507 states and 19750 transitions. [2022-01-10 12:18:06,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:06,832 INFO L276 IsEmpty]: Start isEmpty. Operand 11507 states and 19750 transitions. [2022-01-10 12:18:06,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 12:18:06,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:06,852 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] [2022-01-10 12:18:06,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:18:06,852 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:18:06,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:06,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1646483250, now seen corresponding path program 1 times [2022-01-10 12:18:06,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:06,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752423660] [2022-01-10 12:18:06,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:06,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:06,999 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 12:18:07,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:07,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752423660] [2022-01-10 12:18:07,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752423660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:07,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:07,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 12:18:07,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996819001] [2022-01-10 12:18:07,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:07,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:18:07,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:07,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:18:07,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:18:07,001 INFO L87 Difference]: Start difference. First operand 11507 states and 19750 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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 12:18:11,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:11,768 INFO L93 Difference]: Finished difference Result 53954 states and 90825 transitions. [2022-01-10 12:18:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-10 12:18:11,769 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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 92 [2022-01-10 12:18:11,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:11,859 INFO L225 Difference]: With dead ends: 53954 [2022-01-10 12:18:11,859 INFO L226 Difference]: Without dead ends: 53118 [2022-01-10 12:18:11,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2022-01-10 12:18:11,878 INFO L933 BasicCegarLoop]: 1058 mSDtfsCounter, 3485 mSDsluCounter, 4237 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3485 SdHoareTripleChecker+Valid, 5295 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:11,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3485 Valid, 5295 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:18:11,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53118 states. [2022-01-10 12:18:13,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53118 to 23066. [2022-01-10 12:18:13,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23066 states, 23064 states have (on average 1.715964273326396) internal successors, (39577), 23065 states have internal predecessors, (39577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:13,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23066 states to 23066 states and 39577 transitions. [2022-01-10 12:18:13,881 INFO L78 Accepts]: Start accepts. Automaton has 23066 states and 39577 transitions. Word has length 92 [2022-01-10 12:18:13,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:13,881 INFO L470 AbstractCegarLoop]: Abstraction has 23066 states and 39577 transitions. [2022-01-10 12:18:13,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 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 12:18:13,882 INFO L276 IsEmpty]: Start isEmpty. Operand 23066 states and 39577 transitions. [2022-01-10 12:18:13,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 12:18:13,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:13,916 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] [2022-01-10 12:18:13,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:18:13,916 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:18:13,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:13,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1646453459, now seen corresponding path program 1 times [2022-01-10 12:18:13,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:13,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177712043] [2022-01-10 12:18:13,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:13,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:14,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:18:14,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:14,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177712043] [2022-01-10 12:18:14,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177712043] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:18:14,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265437922] [2022-01-10 12:18:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:14,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:18:14,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:18:14,250 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:18:14,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 12:18:14,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:14,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 50 conjunts are in the unsatisfiable core [2022-01-10 12:18:14,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:18:15,441 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 12:18:15,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 12:18:15,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265437922] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:15,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 12:18:15,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [16] total 26 [2022-01-10 12:18:15,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864101289] [2022-01-10 12:18:15,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:15,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 12:18:15,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:15,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 12:18:15,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2022-01-10 12:18:15,444 INFO L87 Difference]: Start difference. First operand 23066 states and 39577 transitions. Second operand has 16 states, 16 states have (on average 5.75) internal successors, (92), 16 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 12:18:30,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:30,244 INFO L93 Difference]: Finished difference Result 73702 states and 121828 transitions. [2022-01-10 12:18:30,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-01-10 12:18:30,244 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.75) internal successors, (92), 16 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 12:18:30,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:30,369 INFO L225 Difference]: With dead ends: 73702 [2022-01-10 12:18:30,370 INFO L226 Difference]: Without dead ends: 73030 [2022-01-10 12:18:30,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20887 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=7767, Invalid=41295, Unknown=0, NotChecked=0, Total=49062 [2022-01-10 12:18:30,399 INFO L933 BasicCegarLoop]: 1854 mSDtfsCounter, 10262 mSDsluCounter, 23188 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10262 SdHoareTripleChecker+Valid, 25042 SdHoareTripleChecker+Invalid, 1737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:30,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10262 Valid, 25042 Invalid, 1737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1638 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 12:18:30,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73030 states. [2022-01-10 12:18:33,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73030 to 38365. [2022-01-10 12:18:33,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38365 states, 38363 states have (on average 1.7259077757213983) internal successors, (66211), 38364 states have internal predecessors, (66211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:18:33,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38365 states to 38365 states and 66211 transitions. [2022-01-10 12:18:33,810 INFO L78 Accepts]: Start accepts. Automaton has 38365 states and 66211 transitions. Word has length 92 [2022-01-10 12:18:33,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:18:33,811 INFO L470 AbstractCegarLoop]: Abstraction has 38365 states and 66211 transitions. [2022-01-10 12:18:33,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.75) internal successors, (92), 16 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 12:18:33,811 INFO L276 IsEmpty]: Start isEmpty. Operand 38365 states and 66211 transitions. [2022-01-10 12:18:33,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 12:18:33,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:18:33,852 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] [2022-01-10 12:18:33,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 12:18:34,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-10 12:18:34,063 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:18:34,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:18:34,063 INFO L85 PathProgramCache]: Analyzing trace with hash -709288181, now seen corresponding path program 1 times [2022-01-10 12:18:34,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:18:34,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071231507] [2022-01-10 12:18:34,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:18:34,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:18:34,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:18:34,237 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 12:18:34,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:18:34,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071231507] [2022-01-10 12:18:34,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071231507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:18:34,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:18:34,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:18:34,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369901471] [2022-01-10 12:18:34,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:18:34,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:18:34,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:18:34,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:18:34,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:18:34,239 INFO L87 Difference]: Start difference. First operand 38365 states and 66211 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 12:18:42,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:18:42,846 INFO L93 Difference]: Finished difference Result 64233 states and 104581 transitions. [2022-01-10 12:18:42,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 12:18:42,846 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 92 [2022-01-10 12:18:42,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:18:42,936 INFO L225 Difference]: With dead ends: 64233 [2022-01-10 12:18:42,937 INFO L226 Difference]: Without dead ends: 61684 [2022-01-10 12:18:42,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-10 12:18:42,953 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 1299 mSDsluCounter, 2808 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 3610 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:18:42,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1299 Valid, 3610 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]