/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:53:16,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:53:16,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:53:16,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:53:16,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:53:16,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:53:16,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:53:16,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:53:16,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:53:16,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:53:16,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:53:16,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:53:16,208 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:53:16,211 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:53:16,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:53:16,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:53:16,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:53:16,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:53:16,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:53:16,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:53:16,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:53:16,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:53:16,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:53:16,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:53:16,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:53:16,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:53:16,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:53:16,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:53:16,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:53:16,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:53:16,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:53:16,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:53:16,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:53:16,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:53:16,232 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:53:16,232 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:53:16,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:53:16,233 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:53:16,233 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:53:16,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:53:16,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:53:16,235 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:53:16,254 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:53:16,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:53:16,255 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:53:16,255 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:53:16,256 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:53:16,256 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:53:16,256 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:53:16,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:53:16,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:53:16,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:53:16,257 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:53:16,257 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:53:16,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:53:16,257 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:53:16,257 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:53:16,257 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:53:16,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:53:16,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:53:16,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:53:16,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:53:16,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:53:16,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:53:16,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:53:16,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:53:16,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:53:16,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:53:16,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:53:16,259 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:53:16,259 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:53:16,259 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:53:16,259 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:53:16,259 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:53:16,260 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:53:16,260 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:53:16,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:53:16,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:53:16,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:53:16,445 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:53:16,446 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:53:16,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product18.cil.c [2022-01-10 23:53:16,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fe5d1032/4bd9943fbab04593951bfe1f62fb6fb2/FLAG2547b7e94 [2022-01-10 23:53:16,962 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:53:16,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product18.cil.c [2022-01-10 23:53:16,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fe5d1032/4bd9943fbab04593951bfe1f62fb6fb2/FLAG2547b7e94 [2022-01-10 23:53:16,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fe5d1032/4bd9943fbab04593951bfe1f62fb6fb2 [2022-01-10 23:53:17,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:53:17,002 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:53:17,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:53:17,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:53:17,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:53:17,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:53:17" (1/1) ... [2022-01-10 23:53:17,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f84161b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:17, skipping insertion in model container [2022-01-10 23:53:17,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:53:17" (1/1) ... [2022-01-10 23:53:17,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:53:17,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:53:17,461 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_spec27_product18.cil.c[62382,62395] [2022-01-10 23:53:17,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:53:17,481 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:53:17,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:53:17,549 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_spec27_product18.cil.c[62382,62395] [2022-01-10 23:53:17,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:53:17,553 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:53:17,606 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_spec27_product18.cil.c[62382,62395] [2022-01-10 23:53:17,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:53:17,638 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:53:17,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:17 WrapperNode [2022-01-10 23:53:17,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:53:17,639 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:53:17,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:53:17,639 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:53:17,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:17" (1/1) ... [2022-01-10 23:53:17,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:17" (1/1) ... [2022-01-10 23:53:17,716 INFO L137 Inliner]: procedures = 129, calls = 200, calls flagged for inlining = 113, calls inlined = 133, statements flattened = 1999 [2022-01-10 23:53:17,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:53:17,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:53:17,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:53:17,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:53:17,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:17" (1/1) ... [2022-01-10 23:53:17,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:17" (1/1) ... [2022-01-10 23:53:17,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:17" (1/1) ... [2022-01-10 23:53:17,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:17" (1/1) ... [2022-01-10 23:53:17,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:17" (1/1) ... [2022-01-10 23:53:17,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:17" (1/1) ... [2022-01-10 23:53:17,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:17" (1/1) ... [2022-01-10 23:53:17,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:53:17,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:53:17,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:53:17,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:53:17,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:17" (1/1) ... [2022-01-10 23:53:17,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:53:17,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:53:17,853 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 23:53:17,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 23:53:17,888 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:53:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:53:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:53:17,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:53:17,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:53:18,046 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:53:18,047 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:53:18,944 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:53:18,960 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:53:18,960 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:53:18,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:53:18 BoogieIcfgContainer [2022-01-10 23:53:18,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:53:18,963 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:53:18,963 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:53:18,964 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:53:18,966 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:53:18" (1/1) ... [2022-01-10 23:53:19,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:53:19 BasicIcfg [2022-01-10 23:53:19,238 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:53:19,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:53:19,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:53:19,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:53:19,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:53:17" (1/4) ... [2022-01-10 23:53:19,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793bf75b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:53:19, skipping insertion in model container [2022-01-10 23:53:19,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:17" (2/4) ... [2022-01-10 23:53:19,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793bf75b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:53:19, skipping insertion in model container [2022-01-10 23:53:19,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:53:18" (3/4) ... [2022-01-10 23:53:19,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@793bf75b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:53:19, skipping insertion in model container [2022-01-10 23:53:19,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:53:19" (4/4) ... [2022-01-10 23:53:19,256 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product18.cil.cTransformedIcfg [2022-01-10 23:53:19,260 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:53:19,261 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 23:53:19,294 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:53:19,299 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 23:53:19,299 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 23:53:19,315 INFO L276 IsEmpty]: Start isEmpty. Operand has 470 states, 467 states have (on average 1.702355460385439) internal successors, (795), 469 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:19,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 23:53:19,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:19,324 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] [2022-01-10 23:53:19,325 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:19,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:19,329 INFO L85 PathProgramCache]: Analyzing trace with hash -236903897, now seen corresponding path program 1 times [2022-01-10 23:53:19,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:19,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084081887] [2022-01-10 23:53:19,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:19,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:19,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:19,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:19,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084081887] [2022-01-10 23:53:19,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084081887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:19,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:19,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:53:19,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262602364] [2022-01-10 23:53:19,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:19,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:53:19,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:19,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:53:19,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:53:19,707 INFO L87 Difference]: Start difference. First operand has 470 states, 467 states have (on average 1.702355460385439) internal successors, (795), 469 states have internal predecessors, (795), 0 states have call successors, (0), 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 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:19,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:19,757 INFO L93 Difference]: Finished difference Result 679 states and 1130 transitions. [2022-01-10 23:53:19,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:53:19,758 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-10 23:53:19,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:19,768 INFO L225 Difference]: With dead ends: 679 [2022-01-10 23:53:19,768 INFO L226 Difference]: Without dead ends: 441 [2022-01-10 23:53:19,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:53:19,773 INFO L933 BasicCegarLoop]: 789 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, 789 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:19,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:53:19,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-01-10 23:53:19,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2022-01-10 23:53:19,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.7107061503416856) internal successors, (751), 440 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:19,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 751 transitions. [2022-01-10 23:53:19,843 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 751 transitions. Word has length 55 [2022-01-10 23:53:19,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:19,843 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 751 transitions. [2022-01-10 23:53:19,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:19,843 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 751 transitions. [2022-01-10 23:53:19,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 23:53:19,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:19,846 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] [2022-01-10 23:53:19,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:53:19,846 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:19,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:19,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1274186405, now seen corresponding path program 1 times [2022-01-10 23:53:19,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:19,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551564104] [2022-01-10 23:53:19,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:19,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:20,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:20,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:20,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551564104] [2022-01-10 23:53:20,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551564104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:20,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:20,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:53:20,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561646311] [2022-01-10 23:53:20,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:20,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:53:20,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:20,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:53:20,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:53:20,148 INFO L87 Difference]: Start difference. First operand 441 states and 751 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:20,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:20,225 INFO L93 Difference]: Finished difference Result 863 states and 1474 transitions. [2022-01-10 23:53:20,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:53:20,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-10 23:53:20,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:20,228 INFO L225 Difference]: With dead ends: 863 [2022-01-10 23:53:20,228 INFO L226 Difference]: Without dead ends: 441 [2022-01-10 23:53:20,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:53:20,230 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 726 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:20,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 745 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:53:20,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-01-10 23:53:20,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2022-01-10 23:53:20,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.7061503416856492) internal successors, (749), 440 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:20,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 749 transitions. [2022-01-10 23:53:20,252 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 749 transitions. Word has length 56 [2022-01-10 23:53:20,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:20,252 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 749 transitions. [2022-01-10 23:53:20,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:20,252 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 749 transitions. [2022-01-10 23:53:20,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 23:53:20,254 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:20,254 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 23:53:20,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:53:20,255 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:20,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:20,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1677093467, now seen corresponding path program 1 times [2022-01-10 23:53:20,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:20,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545992733] [2022-01-10 23:53:20,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:20,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:20,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:20,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545992733] [2022-01-10 23:53:20,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545992733] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:20,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:20,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:53:20,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187314069] [2022-01-10 23:53:20,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:20,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:53:20,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:20,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:53:20,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:20,337 INFO L87 Difference]: Start difference. First operand 441 states and 749 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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 23:53:20,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:20,498 INFO L93 Difference]: Finished difference Result 2073 states and 3541 transitions. [2022-01-10 23:53:20,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:53:20,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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 23:53:20,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:20,504 INFO L225 Difference]: With dead ends: 2073 [2022-01-10 23:53:20,504 INFO L226 Difference]: Without dead ends: 1656 [2022-01-10 23:53:20,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:53:20,507 INFO L933 BasicCegarLoop]: 1421 mSDtfsCounter, 3528 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3528 SdHoareTripleChecker+Valid, 3540 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:20,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3528 Valid, 3540 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:53:20,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2022-01-10 23:53:20,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 441. [2022-01-10 23:53:20,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.703872437357631) internal successors, (748), 440 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:20,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 748 transitions. [2022-01-10 23:53:20,554 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 748 transitions. Word has length 58 [2022-01-10 23:53:20,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:20,554 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 748 transitions. [2022-01-10 23:53:20,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 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 23:53:20,555 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 748 transitions. [2022-01-10 23:53:20,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 23:53:20,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:20,558 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] [2022-01-10 23:53:20,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:53:20,558 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:20,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:20,559 INFO L85 PathProgramCache]: Analyzing trace with hash 151898113, now seen corresponding path program 1 times [2022-01-10 23:53:20,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:20,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281564299] [2022-01-10 23:53:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:20,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:20,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:20,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:20,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281564299] [2022-01-10 23:53:20,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281564299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:20,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:20,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:53:20,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253061487] [2022-01-10 23:53:20,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:20,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:53:20,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:20,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:53:20,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:53:20,653 INFO L87 Difference]: Start difference. First operand 441 states and 748 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:20,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:20,691 INFO L93 Difference]: Finished difference Result 867 states and 1474 transitions. [2022-01-10 23:53:20,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:53:20,692 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-01-10 23:53:20,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:20,693 INFO L225 Difference]: With dead ends: 867 [2022-01-10 23:53:20,693 INFO L226 Difference]: Without dead ends: 455 [2022-01-10 23:53:20,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:53:20,703 INFO L933 BasicCegarLoop]: 762 mSDtfsCounter, 727 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:20,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 784 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:53:20,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-01-10 23:53:20,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 441. [2022-01-10 23:53:20,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.7015945330296127) internal successors, (747), 440 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:20,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 747 transitions. [2022-01-10 23:53:20,733 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 747 transitions. Word has length 59 [2022-01-10 23:53:20,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:20,734 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 747 transitions. [2022-01-10 23:53:20,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:20,734 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 747 transitions. [2022-01-10 23:53:20,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 23:53:20,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:20,736 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 23:53:20,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:53:20,737 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:20,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:20,738 INFO L85 PathProgramCache]: Analyzing trace with hash -784581276, now seen corresponding path program 1 times [2022-01-10 23:53:20,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:20,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650617206] [2022-01-10 23:53:20,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:20,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:20,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:20,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:20,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650617206] [2022-01-10 23:53:20,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650617206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:20,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:20,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:53:20,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349140622] [2022-01-10 23:53:20,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:20,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:53:20,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:20,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:53:20,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:20,878 INFO L87 Difference]: Start difference. First operand 441 states and 747 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 23:53:21,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:21,025 INFO L93 Difference]: Finished difference Result 1257 states and 2141 transitions. [2022-01-10 23:53:21,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:53:21,026 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 23:53:21,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:21,029 INFO L225 Difference]: With dead ends: 1257 [2022-01-10 23:53:21,029 INFO L226 Difference]: Without dead ends: 850 [2022-01-10 23:53:21,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:53:21,033 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 3451 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3451 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:21,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3451 Valid, 1526 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:53:21,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-01-10 23:53:21,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 441. [2022-01-10 23:53:21,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.6970387243735763) internal successors, (745), 440 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:21,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 745 transitions. [2022-01-10 23:53:21,066 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 745 transitions. Word has length 60 [2022-01-10 23:53:21,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:21,070 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 745 transitions. [2022-01-10 23:53:21,070 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 23:53:21,070 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 745 transitions. [2022-01-10 23:53:21,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 23:53:21,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:21,071 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 23:53:21,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:53:21,072 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:21,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:21,072 INFO L85 PathProgramCache]: Analyzing trace with hash 3378407, now seen corresponding path program 1 times [2022-01-10 23:53:21,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:21,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349706760] [2022-01-10 23:53:21,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:21,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:21,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:21,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:21,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349706760] [2022-01-10 23:53:21,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349706760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:21,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:21,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:53:21,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910739440] [2022-01-10 23:53:21,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:21,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:53:21,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:21,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:53:21,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:53:21,197 INFO L87 Difference]: Start difference. First operand 441 states and 745 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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 23:53:21,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:21,450 INFO L93 Difference]: Finished difference Result 2141 states and 3619 transitions. [2022-01-10 23:53:21,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:53:21,451 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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 23:53:21,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:21,458 INFO L225 Difference]: With dead ends: 2141 [2022-01-10 23:53:21,458 INFO L226 Difference]: Without dead ends: 1978 [2022-01-10 23:53:21,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:53:21,460 INFO L933 BasicCegarLoop]: 1079 mSDtfsCounter, 3809 mSDsluCounter, 3998 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3809 SdHoareTripleChecker+Valid, 5077 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:21,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3809 Valid, 5077 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:53:21,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1978 states. [2022-01-10 23:53:21,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1978 to 797. [2022-01-10 23:53:21,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 795 states have (on average 1.69937106918239) internal successors, (1351), 796 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:21,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1351 transitions. [2022-01-10 23:53:21,541 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1351 transitions. Word has length 62 [2022-01-10 23:53:21,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:21,541 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 1351 transitions. [2022-01-10 23:53:21,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 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 23:53:21,541 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1351 transitions. [2022-01-10 23:53:21,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 23:53:21,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:21,542 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] [2022-01-10 23:53:21,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:53:21,542 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:21,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:21,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1907361522, now seen corresponding path program 1 times [2022-01-10 23:53:21,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:21,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054929435] [2022-01-10 23:53:21,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:21,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:21,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:21,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:21,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054929435] [2022-01-10 23:53:21,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054929435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:21,619 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:21,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:53:21,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104951321] [2022-01-10 23:53:21,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:21,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:53:21,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:21,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:53:21,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:53:21,621 INFO L87 Difference]: Start difference. First operand 797 states and 1351 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:21,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:21,947 INFO L93 Difference]: Finished difference Result 3745 states and 6355 transitions. [2022-01-10 23:53:21,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:53:21,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-10 23:53:21,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:21,959 INFO L225 Difference]: With dead ends: 3745 [2022-01-10 23:53:21,959 INFO L226 Difference]: Without dead ends: 3492 [2022-01-10 23:53:21,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:53:21,961 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 3819 mSDsluCounter, 3137 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3819 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:21,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3819 Valid, 4135 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:53:21,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2022-01-10 23:53:22,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 1486. [2022-01-10 23:53:22,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1484 states have (on average 1.7068733153638813) internal successors, (2533), 1485 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:22,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2533 transitions. [2022-01-10 23:53:22,049 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2533 transitions. Word has length 63 [2022-01-10 23:53:22,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:22,049 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 2533 transitions. [2022-01-10 23:53:22,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:22,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2533 transitions. [2022-01-10 23:53:22,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 23:53:22,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:22,052 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] [2022-01-10 23:53:22,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:53:22,052 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:22,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:22,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1928969849, now seen corresponding path program 1 times [2022-01-10 23:53:22,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:22,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717992802] [2022-01-10 23:53:22,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:22,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:22,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:22,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:22,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717992802] [2022-01-10 23:53:22,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717992802] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:22,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:22,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:53:22,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268460172] [2022-01-10 23:53:22,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:22,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:53:22,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:22,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:53:22,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:22,134 INFO L87 Difference]: Start difference. First operand 1486 states and 2533 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:22,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:22,386 INFO L93 Difference]: Finished difference Result 4270 states and 7339 transitions. [2022-01-10 23:53:22,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:53:22,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-10 23:53:22,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:22,396 INFO L225 Difference]: With dead ends: 4270 [2022-01-10 23:53:22,397 INFO L226 Difference]: Without dead ends: 2834 [2022-01-10 23:53:22,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:53:22,403 INFO L933 BasicCegarLoop]: 1393 mSDtfsCounter, 2172 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:22,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2172 Valid, 2091 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:53:22,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2834 states. [2022-01-10 23:53:22,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2834 to 1486. [2022-01-10 23:53:22,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1484 states have (on average 1.7055256064690028) internal successors, (2531), 1485 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:22,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2531 transitions. [2022-01-10 23:53:22,507 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2531 transitions. Word has length 63 [2022-01-10 23:53:22,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:22,507 INFO L470 AbstractCegarLoop]: Abstraction has 1486 states and 2531 transitions. [2022-01-10 23:53:22,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:22,507 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2531 transitions. [2022-01-10 23:53:22,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 23:53:22,509 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:22,509 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 23:53:22,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:53:22,509 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:22,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:22,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1317982694, now seen corresponding path program 1 times [2022-01-10 23:53:22,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:22,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904343154] [2022-01-10 23:53:22,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:22,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:22,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:22,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:22,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904343154] [2022-01-10 23:53:22,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904343154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:22,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:22,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:53:22,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523941918] [2022-01-10 23:53:22,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:22,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:53:22,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:22,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:53:22,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:53:22,611 INFO L87 Difference]: Start difference. First operand 1486 states and 2531 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 23:53:23,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:23,070 INFO L93 Difference]: Finished difference Result 6898 states and 11767 transitions. [2022-01-10 23:53:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:53:23,071 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 23:53:23,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:23,091 INFO L225 Difference]: With dead ends: 6898 [2022-01-10 23:53:23,091 INFO L226 Difference]: Without dead ends: 6468 [2022-01-10 23:53:23,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:53:23,094 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 3757 mSDsluCounter, 3175 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 4179 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:23,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3757 Valid, 4179 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:53:23,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6468 states. [2022-01-10 23:53:23,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6468 to 2825. [2022-01-10 23:53:23,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2823 states have (on average 1.7176762309599716) internal successors, (4849), 2824 states have internal predecessors, (4849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:23,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 4849 transitions. [2022-01-10 23:53:23,295 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 4849 transitions. Word has length 64 [2022-01-10 23:53:23,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:23,295 INFO L470 AbstractCegarLoop]: Abstraction has 2825 states and 4849 transitions. [2022-01-10 23:53:23,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 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 23:53:23,296 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 4849 transitions. [2022-01-10 23:53:23,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 23:53:23,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:23,299 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 23:53:23,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:53:23,299 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:23,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:23,300 INFO L85 PathProgramCache]: Analyzing trace with hash -73218213, now seen corresponding path program 1 times [2022-01-10 23:53:23,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:23,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157339999] [2022-01-10 23:53:23,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:23,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:23,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:23,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157339999] [2022-01-10 23:53:23,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157339999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:23,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:23,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:53:23,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242402462] [2022-01-10 23:53:23,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:23,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:53:23,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:23,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:53:23,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:53:23,366 INFO L87 Difference]: Start difference. First operand 2825 states and 4849 transitions. Second operand has 4 states, 4 states have (on average 16.0) 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 23:53:23,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:23,540 INFO L93 Difference]: Finished difference Result 3274 states and 5542 transitions. [2022-01-10 23:53:23,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:53:23,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) 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 23:53:23,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:23,548 INFO L225 Difference]: With dead ends: 3274 [2022-01-10 23:53:23,548 INFO L226 Difference]: Without dead ends: 2825 [2022-01-10 23:53:23,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:23,550 INFO L933 BasicCegarLoop]: 737 mSDtfsCounter, 486 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:23,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1727 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:53:23,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2825 states. [2022-01-10 23:53:23,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2825 to 2825. [2022-01-10 23:53:23,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2823 states have (on average 1.7144881331916402) internal successors, (4840), 2824 states have internal predecessors, (4840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:23,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 4840 transitions. [2022-01-10 23:53:23,754 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 4840 transitions. Word has length 64 [2022-01-10 23:53:23,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:23,755 INFO L470 AbstractCegarLoop]: Abstraction has 2825 states and 4840 transitions. [2022-01-10 23:53:23,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) 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 23:53:23,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 4840 transitions. [2022-01-10 23:53:23,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 23:53:23,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:23,760 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] [2022-01-10 23:53:23,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:53:23,761 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:23,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:23,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1496394582, now seen corresponding path program 1 times [2022-01-10 23:53:23,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:23,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319163025] [2022-01-10 23:53:23,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:23,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:23,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:23,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:23,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319163025] [2022-01-10 23:53:23,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319163025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:23,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:23,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:53:23,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086687927] [2022-01-10 23:53:23,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:23,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:53:23,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:23,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:53:23,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:23,886 INFO L87 Difference]: Start difference. First operand 2825 states and 4840 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:24,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:24,348 INFO L93 Difference]: Finished difference Result 4827 states and 7768 transitions. [2022-01-10 23:53:24,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:53:24,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-01-10 23:53:24,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:24,361 INFO L225 Difference]: With dead ends: 4827 [2022-01-10 23:53:24,361 INFO L226 Difference]: Without dead ends: 4414 [2022-01-10 23:53:24,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:53:24,363 INFO L933 BasicCegarLoop]: 738 mSDtfsCounter, 1558 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 2517 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:24,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1558 Valid, 2517 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:53:24,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4414 states. [2022-01-10 23:53:24,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4414 to 3293. [2022-01-10 23:53:24,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3293 states, 3291 states have (on average 1.6830750531753267) internal successors, (5539), 3292 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:24,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3293 states to 3293 states and 5539 transitions. [2022-01-10 23:53:24,627 INFO L78 Accepts]: Start accepts. Automaton has 3293 states and 5539 transitions. Word has length 67 [2022-01-10 23:53:24,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:24,628 INFO L470 AbstractCegarLoop]: Abstraction has 3293 states and 5539 transitions. [2022-01-10 23:53:24,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:24,628 INFO L276 IsEmpty]: Start isEmpty. Operand 3293 states and 5539 transitions. [2022-01-10 23:53:24,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 23:53:24,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:24,632 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 23:53:24,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:53:24,632 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:24,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:24,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1157088473, now seen corresponding path program 1 times [2022-01-10 23:53:24,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:24,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066337396] [2022-01-10 23:53:24,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:24,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:24,773 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 23:53:24,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:24,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066337396] [2022-01-10 23:53:24,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066337396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:24,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:24,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 23:53:24,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771622137] [2022-01-10 23:53:24,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:24,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:53:24,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:24,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:53:24,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:53:24,775 INFO L87 Difference]: Start difference. First operand 3293 states and 5539 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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 23:53:25,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:25,176 INFO L93 Difference]: Finished difference Result 4012 states and 6606 transitions. [2022-01-10 23:53:25,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 23:53:25,176 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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 23:53:25,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:25,184 INFO L225 Difference]: With dead ends: 4012 [2022-01-10 23:53:25,184 INFO L226 Difference]: Without dead ends: 3183 [2022-01-10 23:53:25,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2022-01-10 23:53:25,186 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 1367 mSDsluCounter, 3883 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1367 SdHoareTripleChecker+Valid, 4639 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:25,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1367 Valid, 4639 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:53:25,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2022-01-10 23:53:25,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 3165. [2022-01-10 23:53:25,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3165 states, 3163 states have (on average 1.6727790072715776) internal successors, (5291), 3164 states have internal predecessors, (5291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:25,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3165 states to 3165 states and 5291 transitions. [2022-01-10 23:53:25,469 INFO L78 Accepts]: Start accepts. Automaton has 3165 states and 5291 transitions. Word has length 68 [2022-01-10 23:53:25,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:25,469 INFO L470 AbstractCegarLoop]: Abstraction has 3165 states and 5291 transitions. [2022-01-10 23:53:25,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 9 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 23:53:25,469 INFO L276 IsEmpty]: Start isEmpty. Operand 3165 states and 5291 transitions. [2022-01-10 23:53:25,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-10 23:53:25,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:25,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:25,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:53:25,474 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:25,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:25,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1755475590, now seen corresponding path program 1 times [2022-01-10 23:53:25,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:25,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109083498] [2022-01-10 23:53:25,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:25,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:25,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:25,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109083498] [2022-01-10 23:53:25,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109083498] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:25,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:25,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:53:25,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982994515] [2022-01-10 23:53:25,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:25,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:53:25,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:25,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:53:25,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:53:25,559 INFO L87 Difference]: Start difference. First operand 3165 states and 5291 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:25,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:25,884 INFO L93 Difference]: Finished difference Result 4655 states and 7406 transitions. [2022-01-10 23:53:25,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:53:25,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-01-10 23:53:25,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:25,890 INFO L225 Difference]: With dead ends: 4655 [2022-01-10 23:53:25,890 INFO L226 Difference]: Without dead ends: 3842 [2022-01-10 23:53:25,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:25,892 INFO L933 BasicCegarLoop]: 885 mSDtfsCounter, 402 mSDsluCounter, 1641 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 2526 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:25,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 2526 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:53:25,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3842 states. [2022-01-10 23:53:26,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3842 to 3185. [2022-01-10 23:53:26,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3185 states, 3183 states have (on average 1.6685516808042726) internal successors, (5311), 3184 states have internal predecessors, (5311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:26,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 5311 transitions. [2022-01-10 23:53:26,132 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 5311 transitions. Word has length 81 [2022-01-10 23:53:26,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:26,132 INFO L470 AbstractCegarLoop]: Abstraction has 3185 states and 5311 transitions. [2022-01-10 23:53:26,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:26,132 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 5311 transitions. [2022-01-10 23:53:26,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 23:53:26,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:26,136 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:26,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:53:26,136 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:26,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:26,137 INFO L85 PathProgramCache]: Analyzing trace with hash -743480926, now seen corresponding path program 1 times [2022-01-10 23:53:26,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:26,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509782772] [2022-01-10 23:53:26,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:26,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:26,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:26,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509782772] [2022-01-10 23:53:26,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509782772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:26,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:26,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 23:53:26,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310245716] [2022-01-10 23:53:26,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:26,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:53:26,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:26,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:53:26,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:53:26,248 INFO L87 Difference]: Start difference. First operand 3185 states and 5311 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:27,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:27,969 INFO L93 Difference]: Finished difference Result 10977 states and 16187 transitions. [2022-01-10 23:53:27,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 23:53:27,970 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 23:53:27,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:27,985 INFO L225 Difference]: With dead ends: 10977 [2022-01-10 23:53:27,985 INFO L226 Difference]: Without dead ends: 10056 [2022-01-10 23:53:27,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=750, Unknown=0, NotChecked=0, Total=1056 [2022-01-10 23:53:27,987 INFO L933 BasicCegarLoop]: 825 mSDtfsCounter, 5341 mSDsluCounter, 4742 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5341 SdHoareTripleChecker+Valid, 5567 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:27,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5341 Valid, 5567 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:53:27,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10056 states. [2022-01-10 23:53:28,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10056 to 4473. [2022-01-10 23:53:28,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4473 states, 4471 states have (on average 1.6199955267278014) internal successors, (7243), 4472 states have internal predecessors, (7243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:28,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4473 states to 4473 states and 7243 transitions. [2022-01-10 23:53:28,432 INFO L78 Accepts]: Start accepts. Automaton has 4473 states and 7243 transitions. Word has length 82 [2022-01-10 23:53:28,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:28,432 INFO L470 AbstractCegarLoop]: Abstraction has 4473 states and 7243 transitions. [2022-01-10 23:53:28,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 9 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:28,432 INFO L276 IsEmpty]: Start isEmpty. Operand 4473 states and 7243 transitions. [2022-01-10 23:53:28,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 23:53:28,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:28,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:28,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:53:28,438 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:28,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:28,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1445406886, now seen corresponding path program 1 times [2022-01-10 23:53:28,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:28,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134546322] [2022-01-10 23:53:28,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:28,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:28,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:28,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134546322] [2022-01-10 23:53:28,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134546322] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:28,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:28,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:53:28,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571930387] [2022-01-10 23:53:28,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:28,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:53:28,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:28,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:53:28,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:28,540 INFO L87 Difference]: Start difference. First operand 4473 states and 7243 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:30,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:30,114 INFO L93 Difference]: Finished difference Result 11311 states and 17141 transitions. [2022-01-10 23:53:30,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:53:30,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-10 23:53:30,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:30,132 INFO L225 Difference]: With dead ends: 11311 [2022-01-10 23:53:30,132 INFO L226 Difference]: Without dead ends: 9324 [2022-01-10 23:53:30,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:53:30,137 INFO L933 BasicCegarLoop]: 746 mSDtfsCounter, 1446 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1446 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:30,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1446 Valid, 2598 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:53:30,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9324 states. [2022-01-10 23:53:30,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9324 to 6819. [2022-01-10 23:53:31,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6819 states, 6817 states have (on average 1.57356608478803) internal successors, (10727), 6818 states have internal predecessors, (10727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:31,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6819 states to 6819 states and 10727 transitions. [2022-01-10 23:53:31,011 INFO L78 Accepts]: Start accepts. Automaton has 6819 states and 10727 transitions. Word has length 83 [2022-01-10 23:53:31,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:31,011 INFO L470 AbstractCegarLoop]: Abstraction has 6819 states and 10727 transitions. [2022-01-10 23:53:31,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:31,012 INFO L276 IsEmpty]: Start isEmpty. Operand 6819 states and 10727 transitions. [2022-01-10 23:53:31,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 23:53:31,021 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:31,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:31,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:53:31,022 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:31,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:31,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1005157367, now seen corresponding path program 1 times [2022-01-10 23:53:31,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:31,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268546316] [2022-01-10 23:53:31,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:31,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:31,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:31,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:31,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268546316] [2022-01-10 23:53:31,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268546316] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:31,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:31,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:53:31,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601748044] [2022-01-10 23:53:31,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:31,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:53:31,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:31,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:53:31,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:31,131 INFO L87 Difference]: Start difference. First operand 6819 states and 10727 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:32,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:32,811 INFO L93 Difference]: Finished difference Result 14983 states and 22387 transitions. [2022-01-10 23:53:32,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:53:32,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 23:53:32,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:32,830 INFO L225 Difference]: With dead ends: 14983 [2022-01-10 23:53:32,830 INFO L226 Difference]: Without dead ends: 11106 [2022-01-10 23:53:32,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:53:32,835 INFO L933 BasicCegarLoop]: 849 mSDtfsCounter, 1234 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:32,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1234 Valid, 2685 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:53:32,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11106 states. [2022-01-10 23:53:33,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11106 to 7773. [2022-01-10 23:53:33,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7773 states, 7771 states have (on average 1.554111439969116) internal successors, (12077), 7772 states have internal predecessors, (12077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:33,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7773 states to 7773 states and 12077 transitions. [2022-01-10 23:53:33,908 INFO L78 Accepts]: Start accepts. Automaton has 7773 states and 12077 transitions. Word has length 84 [2022-01-10 23:53:33,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:33,909 INFO L470 AbstractCegarLoop]: Abstraction has 7773 states and 12077 transitions. [2022-01-10 23:53:33,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:33,909 INFO L276 IsEmpty]: Start isEmpty. Operand 7773 states and 12077 transitions. [2022-01-10 23:53:33,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 23:53:33,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:33,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:33,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:53:33,922 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:33,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:33,922 INFO L85 PathProgramCache]: Analyzing trace with hash 677104925, now seen corresponding path program 1 times [2022-01-10 23:53:33,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:33,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542885624] [2022-01-10 23:53:33,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:33,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:34,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:34,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:34,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542885624] [2022-01-10 23:53:34,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542885624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:34,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:34,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 23:53:34,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8673990] [2022-01-10 23:53:34,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:34,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:53:34,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:34,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:53:34,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:53:34,066 INFO L87 Difference]: Start difference. First operand 7773 states and 12077 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:43,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:43,406 INFO L93 Difference]: Finished difference Result 56089 states and 82991 transitions. [2022-01-10 23:53:43,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 23:53:43,410 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 23:53:43,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:43,492 INFO L225 Difference]: With dead ends: 56089 [2022-01-10 23:53:43,492 INFO L226 Difference]: Without dead ends: 52636 [2022-01-10 23:53:43,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=785, Unknown=0, NotChecked=0, Total=1122 [2022-01-10 23:53:43,510 INFO L933 BasicCegarLoop]: 807 mSDtfsCounter, 8105 mSDsluCounter, 6802 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8105 SdHoareTripleChecker+Valid, 7609 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:43,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8105 Valid, 7609 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 23:53:43,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52636 states. [2022-01-10 23:53:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52636 to 20866. [2022-01-10 23:53:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20866 states, 20864 states have (on average 1.5299079754601228) internal successors, (31920), 20865 states have internal predecessors, (31920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:46,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20866 states to 20866 states and 31920 transitions. [2022-01-10 23:53:46,871 INFO L78 Accepts]: Start accepts. Automaton has 20866 states and 31920 transitions. Word has length 85 [2022-01-10 23:53:46,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:46,871 INFO L470 AbstractCegarLoop]: Abstraction has 20866 states and 31920 transitions. [2022-01-10 23:53:46,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:46,871 INFO L276 IsEmpty]: Start isEmpty. Operand 20866 states and 31920 transitions. [2022-01-10 23:53:46,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 23:53:46,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:46,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:46,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 23:53:46,897 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:46,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:46,897 INFO L85 PathProgramCache]: Analyzing trace with hash 102667835, now seen corresponding path program 1 times [2022-01-10 23:53:46,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:46,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699349292] [2022-01-10 23:53:46,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:46,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:46,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:46,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:46,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699349292] [2022-01-10 23:53:46,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699349292] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:46,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:46,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:53:46,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224001804] [2022-01-10 23:53:46,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:46,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:53:46,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:46,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:53:46,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:53:46,980 INFO L87 Difference]: Start difference. First operand 20866 states and 31920 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:52,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:52,926 INFO L93 Difference]: Finished difference Result 41452 states and 60818 transitions. [2022-01-10 23:53:52,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:53:52,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 23:53:52,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:52,970 INFO L225 Difference]: With dead ends: 41452 [2022-01-10 23:53:52,971 INFO L226 Difference]: Without dead ends: 31355 [2022-01-10 23:53:52,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:52,991 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 388 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:52,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 2486 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:53:53,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31355 states. [2022-01-10 23:53:56,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31355 to 21066. [2022-01-10 23:53:56,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21066 states, 21064 states have (on average 1.5248765666540067) internal successors, (32120), 21065 states have internal predecessors, (32120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:56,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21066 states to 21066 states and 32120 transitions. [2022-01-10 23:53:56,325 INFO L78 Accepts]: Start accepts. Automaton has 21066 states and 32120 transitions. Word has length 85 [2022-01-10 23:53:56,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:56,325 INFO L470 AbstractCegarLoop]: Abstraction has 21066 states and 32120 transitions. [2022-01-10 23:53:56,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:56,325 INFO L276 IsEmpty]: Start isEmpty. Operand 21066 states and 32120 transitions. [2022-01-10 23:53:56,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 23:53:56,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:56,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:56,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 23:53:56,350 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:53:56,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:56,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1256481354, now seen corresponding path program 1 times [2022-01-10 23:53:56,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:56,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415680319] [2022-01-10 23:53:56,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:56,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:56,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:56,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:56,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415680319] [2022-01-10 23:53:56,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415680319] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:56,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:56,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 23:53:56,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146978019] [2022-01-10 23:53:56,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:56,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 23:53:56,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:56,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 23:53:56,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:53:56,426 INFO L87 Difference]: Start difference. First operand 21066 states and 32120 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:59,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:59,685 INFO L93 Difference]: Finished difference Result 36024 states and 53888 transitions. [2022-01-10 23:53:59,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:53:59,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 23:53:59,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:59,714 INFO L225 Difference]: With dead ends: 36024 [2022-01-10 23:53:59,714 INFO L226 Difference]: Without dead ends: 21305 [2022-01-10 23:53:59,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:53:59,731 INFO L933 BasicCegarLoop]: 753 mSDtfsCounter, 1234 mSDsluCounter, 2673 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 3426 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:59,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1234 Valid, 3426 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:53:59,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21305 states. [2022-01-10 23:54:02,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21305 to 21066. [2022-01-10 23:54:02,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21066 states, 21064 states have (on average 1.5180402582605392) internal successors, (31976), 21065 states have internal predecessors, (31976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:02,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21066 states to 21066 states and 31976 transitions. [2022-01-10 23:54:02,967 INFO L78 Accepts]: Start accepts. Automaton has 21066 states and 31976 transitions. Word has length 85 [2022-01-10 23:54:02,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:02,967 INFO L470 AbstractCegarLoop]: Abstraction has 21066 states and 31976 transitions. [2022-01-10 23:54:02,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:02,967 INFO L276 IsEmpty]: Start isEmpty. Operand 21066 states and 31976 transitions. [2022-01-10 23:54:02,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 23:54:02,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:02,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:02,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 23:54:02,989 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:02,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:02,989 INFO L85 PathProgramCache]: Analyzing trace with hash 854809015, now seen corresponding path program 1 times [2022-01-10 23:54:02,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:02,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660046175] [2022-01-10 23:54:02,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:02,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:03,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:03,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:03,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660046175] [2022-01-10 23:54:03,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660046175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:03,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:03,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:54:03,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425664994] [2022-01-10 23:54:03,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:03,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:54:03,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:03,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:54:03,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:03,057 INFO L87 Difference]: Start difference. First operand 21066 states and 31976 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:08,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:08,977 INFO L93 Difference]: Finished difference Result 42507 states and 62247 transitions. [2022-01-10 23:54:08,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 23:54:08,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 23:54:08,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:09,025 INFO L225 Difference]: With dead ends: 42507 [2022-01-10 23:54:09,026 INFO L226 Difference]: Without dead ends: 31410 [2022-01-10 23:54:09,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:54:09,045 INFO L933 BasicCegarLoop]: 996 mSDtfsCounter, 406 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 3350 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:09,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 3350 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:54:09,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31410 states. [2022-01-10 23:54:12,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31410 to 21770. [2022-01-10 23:54:12,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21770 states, 21768 states have (on average 1.5051451672179346) internal successors, (32764), 21769 states have internal predecessors, (32764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:12,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21770 states to 21770 states and 32764 transitions. [2022-01-10 23:54:12,728 INFO L78 Accepts]: Start accepts. Automaton has 21770 states and 32764 transitions. Word has length 85 [2022-01-10 23:54:12,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:12,729 INFO L470 AbstractCegarLoop]: Abstraction has 21770 states and 32764 transitions. [2022-01-10 23:54:12,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:12,729 INFO L276 IsEmpty]: Start isEmpty. Operand 21770 states and 32764 transitions. [2022-01-10 23:54:12,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 23:54:12,753 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:12,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:12,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 23:54:12,754 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:12,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:12,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1855628036, now seen corresponding path program 1 times [2022-01-10 23:54:12,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:12,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809420431] [2022-01-10 23:54:12,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:12,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:12,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:12,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809420431] [2022-01-10 23:54:12,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809420431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:12,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:12,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:54:12,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837150173] [2022-01-10 23:54:12,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:12,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:54:12,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:12,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:54:12,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:54:12,815 INFO L87 Difference]: Start difference. First operand 21770 states and 32764 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:17,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:17,657 INFO L93 Difference]: Finished difference Result 35186 states and 51334 transitions. [2022-01-10 23:54:17,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:54:17,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 23:54:17,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:17,696 INFO L225 Difference]: With dead ends: 35186 [2022-01-10 23:54:17,696 INFO L226 Difference]: Without dead ends: 26023 [2022-01-10 23:54:17,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:54:17,720 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 701 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:17,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [701 Valid, 1766 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:54:17,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26023 states. [2022-01-10 23:54:21,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26023 to 21770. [2022-01-10 23:54:21,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21770 states, 21768 states have (on average 1.5044101433296582) internal successors, (32748), 21769 states have internal predecessors, (32748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:21,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21770 states to 21770 states and 32748 transitions. [2022-01-10 23:54:21,210 INFO L78 Accepts]: Start accepts. Automaton has 21770 states and 32748 transitions. Word has length 85 [2022-01-10 23:54:21,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:21,210 INFO L470 AbstractCegarLoop]: Abstraction has 21770 states and 32748 transitions. [2022-01-10 23:54:21,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:21,210 INFO L276 IsEmpty]: Start isEmpty. Operand 21770 states and 32748 transitions. [2022-01-10 23:54:21,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 23:54:21,254 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:21,254 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:21,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 23:54:21,254 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:54:21,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:21,255 INFO L85 PathProgramCache]: Analyzing trace with hash -886047013, now seen corresponding path program 1 times [2022-01-10 23:54:21,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:21,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918375423] [2022-01-10 23:54:21,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:21,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:21,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:21,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:21,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918375423] [2022-01-10 23:54:21,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918375423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:21,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:21,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:54:21,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3470048] [2022-01-10 23:54:21,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:21,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:54:21,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:21,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:54:21,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:54:21,331 INFO L87 Difference]: Start difference. First operand 21770 states and 32748 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)