/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_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec0_product10.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:59:20,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:59:20,217 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:59:20,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 17:59:20,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 17:59:20,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 17:59:20,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 17:59:20,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 17:59:20,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 17:59:20,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 17:59:20,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 17:59:20,285 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 17:59:20,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:59:20,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:59:20,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:59:20,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:59:20,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:59:20,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:59:20,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:59:20,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:59:20,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:59:20,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:59:20,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:59:20,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:59:20,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 17:59:20,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 17:59:20,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 17:59:20,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 17:59:20,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 17:59:20,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 17:59:20,298 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 17:59:20,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 17:59:20,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 17:59:20,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 17:59:20,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 17:59:20,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 17:59:20,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 17:59:20,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 17:59:20,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:59:20,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:59:20,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:59:20,307 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 17:59:20,337 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:59:20,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:59:20,338 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:59:20,338 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:59:20,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:59:20,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:59:20,339 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:59:20,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:59:20,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:59:20,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:59:20,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:59:20,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:59:20,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:59:20,340 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:59:20,341 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:59:20,341 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:59:20,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:59:20,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:59:20,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:59:20,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:59:20,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:59:20,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:59:20,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:59:20,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:59:20,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:59:20,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:59:20,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:59:20,343 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:59:20,343 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:59:20,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:59:20,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:59:20,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:59:20,344 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:59:20,344 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:59:20,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:59:20,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:59:20,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:59:20,564 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:59:20,571 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:59:20,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product10.cil.c [2022-01-10 17:59:20,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2969ed580/58c7a31715914855adbbf452af4dcb4c/FLAG7a24919fe [2022-01-10 17:59:21,064 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:59:21,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product10.cil.c [2022-01-10 17:59:21,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2969ed580/58c7a31715914855adbbf452af4dcb4c/FLAG7a24919fe [2022-01-10 17:59:21,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2969ed580/58c7a31715914855adbbf452af4dcb4c [2022-01-10 17:59:21,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:59:21,412 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:59:21,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:59:21,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:59:21,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:59:21,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:59:21" (1/1) ... [2022-01-10 17:59:21,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21f8f409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:21, skipping insertion in model container [2022-01-10 17:59:21,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:59:21" (1/1) ... [2022-01-10 17:59:21,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:59:21,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:59:21,643 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_spec0_product10.cil.c[2842,2855] [2022-01-10 17:59:21,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:59:21,850 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 17:59:21,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:59:21,878 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_spec0_product10.cil.c[2842,2855] [2022-01-10 17:59:21,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:59:21,978 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:59:21,996 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_spec0_product10.cil.c[2842,2855] [2022-01-10 17:59:22,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:59:22,074 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:59:22,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:22 WrapperNode [2022-01-10 17:59:22,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:59:22,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:59:22,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:59:22,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:59:22,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:22" (1/1) ... [2022-01-10 17:59:22,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:22" (1/1) ... [2022-01-10 17:59:22,137 INFO L137 Inliner]: procedures = 112, calls = 135, calls flagged for inlining = 62, calls inlined = 77, statements flattened = 1029 [2022-01-10 17:59:22,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:59:22,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:59:22,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:59:22,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:59:22,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:22" (1/1) ... [2022-01-10 17:59:22,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:22" (1/1) ... [2022-01-10 17:59:22,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:22" (1/1) ... [2022-01-10 17:59:22,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:22" (1/1) ... [2022-01-10 17:59:22,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:22" (1/1) ... [2022-01-10 17:59:22,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:22" (1/1) ... [2022-01-10 17:59:22,186 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:22" (1/1) ... [2022-01-10 17:59:22,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:59:22,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:59:22,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:59:22,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:59:22,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:22" (1/1) ... [2022-01-10 17:59:22,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:59:22,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:59:22,258 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 17:59:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 17:59:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:59:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:59:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:59:22,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:59:22,277 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 17:59:22,471 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:59:22,472 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:59:22,957 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:59:22,968 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:59:22,968 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 17:59:22,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:59:22 BoogieIcfgContainer [2022-01-10 17:59:22,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:59:22,971 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:59:22,971 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:59:22,972 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:59:22,974 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:59:22" (1/1) ... [2022-01-10 17:59:23,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:59:23 BasicIcfg [2022-01-10 17:59:23,163 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:59:23,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:59:23,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:59:23,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:59:23,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:59:21" (1/4) ... [2022-01-10 17:59:23,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b454a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:59:23, skipping insertion in model container [2022-01-10 17:59:23,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:22" (2/4) ... [2022-01-10 17:59:23,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b454a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:59:23, skipping insertion in model container [2022-01-10 17:59:23,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:59:22" (3/4) ... [2022-01-10 17:59:23,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b454a34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:59:23, skipping insertion in model container [2022-01-10 17:59:23,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:59:23" (4/4) ... [2022-01-10 17:59:23,169 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product10.cil.cTransformedIcfg [2022-01-10 17:59:23,173 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:59:23,173 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 17:59:23,220 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:59:23,226 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 17:59:23,226 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 17:59:23,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 188 states, 185 states have (on average 1.5621621621621622) internal successors, (289), 187 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:23,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 17:59:23,250 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:23,251 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] [2022-01-10 17:59:23,251 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:59:23,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:23,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1167439481, now seen corresponding path program 1 times [2022-01-10 17:59:23,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:23,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812940343] [2022-01-10 17:59:23,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:23,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:23,572 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 17:59:23,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:23,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812940343] [2022-01-10 17:59:23,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812940343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:23,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:23,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:59:23,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380845287] [2022-01-10 17:59:23,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:23,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 17:59:23,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:23,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 17:59:23,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 17:59:23,597 INFO L87 Difference]: Start difference. First operand has 188 states, 185 states have (on average 1.5621621621621622) internal successors, (289), 187 states have internal predecessors, (289), 0 states have call successors, (0), 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 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:23,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:23,625 INFO L93 Difference]: Finished difference Result 317 states and 478 transitions. [2022-01-10 17:59:23,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 17:59:23,628 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-01-10 17:59:23,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:23,634 INFO L225 Difference]: With dead ends: 317 [2022-01-10 17:59:23,635 INFO L226 Difference]: Without dead ends: 163 [2022-01-10 17:59:23,637 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 17:59:23,644 INFO L933 BasicCegarLoop]: 283 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, 283 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 17:59:23,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:23,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-01-10 17:59:23,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-01-10 17:59:23,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 161 states have (on average 1.5590062111801242) internal successors, (251), 162 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:23,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 251 transitions. [2022-01-10 17:59:23,686 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 251 transitions. Word has length 43 [2022-01-10 17:59:23,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:23,686 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 251 transitions. [2022-01-10 17:59:23,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:23,687 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 251 transitions. [2022-01-10 17:59:23,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 17:59:23,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:23,688 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] [2022-01-10 17:59:23,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:59:23,688 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:59:23,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:23,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2036941435, now seen corresponding path program 1 times [2022-01-10 17:59:23,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:23,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352962] [2022-01-10 17:59:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:23,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:23,896 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 17:59:23,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:23,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352962] [2022-01-10 17:59:23,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352962] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:23,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:23,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:59:23,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991425118] [2022-01-10 17:59:23,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:23,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:23,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:23,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:23,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:23,899 INFO L87 Difference]: Start difference. First operand 163 states and 251 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:23,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:23,972 INFO L93 Difference]: Finished difference Result 312 states and 482 transitions. [2022-01-10 17:59:23,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:23,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-10 17:59:23,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:23,978 INFO L225 Difference]: With dead ends: 312 [2022-01-10 17:59:23,978 INFO L226 Difference]: Without dead ends: 163 [2022-01-10 17:59:23,979 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 17:59:23,980 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 234 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:23,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 241 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:23,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-01-10 17:59:23,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2022-01-10 17:59:23,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 161 states have (on average 1.546583850931677) internal successors, (249), 162 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:24,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 249 transitions. [2022-01-10 17:59:24,002 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 249 transitions. Word has length 44 [2022-01-10 17:59:24,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:24,003 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 249 transitions. [2022-01-10 17:59:24,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:24,004 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 249 transitions. [2022-01-10 17:59:24,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 17:59:24,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:24,005 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] [2022-01-10 17:59:24,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:59:24,006 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:59:24,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:24,006 INFO L85 PathProgramCache]: Analyzing trace with hash 589183065, now seen corresponding path program 1 times [2022-01-10 17:59:24,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:24,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692630791] [2022-01-10 17:59:24,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:24,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:24,123 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 17:59:24,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:24,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692630791] [2022-01-10 17:59:24,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692630791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:24,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:24,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:59:24,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410835985] [2022-01-10 17:59:24,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:24,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:24,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:24,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:24,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:24,127 INFO L87 Difference]: Start difference. First operand 163 states and 249 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:24,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:24,170 INFO L93 Difference]: Finished difference Result 311 states and 476 transitions. [2022-01-10 17:59:24,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:24,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-01-10 17:59:24,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:24,171 INFO L225 Difference]: With dead ends: 311 [2022-01-10 17:59:24,171 INFO L226 Difference]: Without dead ends: 167 [2022-01-10 17:59:24,172 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 17:59:24,173 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 228 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 255 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 17:59:24,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 255 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:24,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-01-10 17:59:24,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 163. [2022-01-10 17:59:24,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 161 states have (on average 1.5403726708074534) internal successors, (248), 162 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:24,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 248 transitions. [2022-01-10 17:59:24,182 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 248 transitions. Word has length 46 [2022-01-10 17:59:24,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:24,182 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 248 transitions. [2022-01-10 17:59:24,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:24,183 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 248 transitions. [2022-01-10 17:59:24,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 17:59:24,184 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:24,184 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] [2022-01-10 17:59:24,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:59:24,184 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:59:24,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:24,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1426504552, now seen corresponding path program 1 times [2022-01-10 17:59:24,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:24,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841427130] [2022-01-10 17:59:24,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:24,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:24,302 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 17:59:24,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:24,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841427130] [2022-01-10 17:59:24,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841427130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:24,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:24,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:59:24,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932579320] [2022-01-10 17:59:24,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:24,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:59:24,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:24,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:59:24,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:59:24,305 INFO L87 Difference]: Start difference. First operand 163 states and 248 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:24,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:24,441 INFO L93 Difference]: Finished difference Result 483 states and 720 transitions. [2022-01-10 17:59:24,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:59:24,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-01-10 17:59:24,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:24,445 INFO L225 Difference]: With dead ends: 483 [2022-01-10 17:59:24,445 INFO L226 Difference]: Without dead ends: 412 [2022-01-10 17:59:24,446 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 17:59:24,453 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 460 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:24,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [460 Valid, 990 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:24,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-01-10 17:59:24,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 295. [2022-01-10 17:59:24,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 293 states have (on average 1.552901023890785) internal successors, (455), 294 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:24,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 455 transitions. [2022-01-10 17:59:24,482 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 455 transitions. Word has length 47 [2022-01-10 17:59:24,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:24,483 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 455 transitions. [2022-01-10 17:59:24,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:24,484 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 455 transitions. [2022-01-10 17:59:24,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 17:59:24,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:24,488 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:24,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 17:59:24,488 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:59:24,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:24,491 INFO L85 PathProgramCache]: Analyzing trace with hash 30308153, now seen corresponding path program 1 times [2022-01-10 17:59:24,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:24,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546475592] [2022-01-10 17:59:24,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:24,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:24,606 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 17:59:24,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:24,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546475592] [2022-01-10 17:59:24,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546475592] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:24,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:24,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:59:24,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128236820] [2022-01-10 17:59:24,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:24,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:59:24,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:24,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:59:24,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:59:24,609 INFO L87 Difference]: Start difference. First operand 295 states and 455 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:24,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:24,730 INFO L93 Difference]: Finished difference Result 907 states and 1361 transitions. [2022-01-10 17:59:24,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:59:24,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-10 17:59:24,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:24,734 INFO L225 Difference]: With dead ends: 907 [2022-01-10 17:59:24,734 INFO L226 Difference]: Without dead ends: 784 [2022-01-10 17:59:24,735 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 17:59:24,738 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 381 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:24,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 1056 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:24,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-01-10 17:59:24,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 556. [2022-01-10 17:59:24,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 554 states have (on average 1.568592057761733) internal successors, (869), 555 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 869 transitions. [2022-01-10 17:59:24,770 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 869 transitions. Word has length 48 [2022-01-10 17:59:24,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:24,773 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 869 transitions. [2022-01-10 17:59:24,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:24,774 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 869 transitions. [2022-01-10 17:59:24,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 17:59:24,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:24,776 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:24,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 17:59:24,777 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:59:24,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:24,778 INFO L85 PathProgramCache]: Analyzing trace with hash -987336799, now seen corresponding path program 1 times [2022-01-10 17:59:24,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:24,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119291412] [2022-01-10 17:59:24,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:24,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:24,911 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 17:59:24,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:24,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119291412] [2022-01-10 17:59:24,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119291412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:24,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:24,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:59:24,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959447156] [2022-01-10 17:59:24,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:24,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 17:59:24,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:24,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 17:59:24,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 17:59:24,914 INFO L87 Difference]: Start difference. First operand 556 states and 869 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:25,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:25,079 INFO L93 Difference]: Finished difference Result 1719 states and 2601 transitions. [2022-01-10 17:59:25,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 17:59:25,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-01-10 17:59:25,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:25,088 INFO L225 Difference]: With dead ends: 1719 [2022-01-10 17:59:25,088 INFO L226 Difference]: Without dead ends: 1373 [2022-01-10 17:59:25,090 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 17:59:25,091 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 380 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1056 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:25,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 1056 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2022-01-10 17:59:25,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 982. [2022-01-10 17:59:25,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 982 states, 980 states have (on average 1.5816326530612246) internal successors, (1550), 981 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:25,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 982 states to 982 states and 1550 transitions. [2022-01-10 17:59:25,146 INFO L78 Accepts]: Start accepts. Automaton has 982 states and 1550 transitions. Word has length 49 [2022-01-10 17:59:25,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:25,146 INFO L470 AbstractCegarLoop]: Abstraction has 982 states and 1550 transitions. [2022-01-10 17:59:25,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:25,147 INFO L276 IsEmpty]: Start isEmpty. Operand 982 states and 1550 transitions. [2022-01-10 17:59:25,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 17:59:25,148 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:25,148 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:25,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 17:59:25,149 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:59:25,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:25,149 INFO L85 PathProgramCache]: Analyzing trace with hash 943203082, now seen corresponding path program 1 times [2022-01-10 17:59:25,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:25,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189648047] [2022-01-10 17:59:25,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:25,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:25,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:25,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:25,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189648047] [2022-01-10 17:59:25,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189648047] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:25,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:25,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:59:25,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77285482] [2022-01-10 17:59:25,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:25,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:25,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:25,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:25,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:25,202 INFO L87 Difference]: Start difference. First operand 982 states and 1550 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 17:59:25,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:25,318 INFO L93 Difference]: Finished difference Result 2894 states and 4578 transitions. [2022-01-10 17:59:25,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:25,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 17:59:25,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:25,324 INFO L225 Difference]: With dead ends: 2894 [2022-01-10 17:59:25,325 INFO L226 Difference]: Without dead ends: 1934 [2022-01-10 17:59:25,326 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 17:59:25,327 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 214 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:25,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 488 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:25,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2022-01-10 17:59:25,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 1254. [2022-01-10 17:59:25,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 1252 states have (on average 1.6253993610223643) internal successors, (2035), 1253 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 2035 transitions. [2022-01-10 17:59:25,396 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 2035 transitions. Word has length 60 [2022-01-10 17:59:25,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:25,397 INFO L470 AbstractCegarLoop]: Abstraction has 1254 states and 2035 transitions. [2022-01-10 17:59:25,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 17:59:25,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 2035 transitions. [2022-01-10 17:59:25,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 17:59:25,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:25,398 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:25,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 17:59:25,399 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:59:25,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:25,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1994417935, now seen corresponding path program 1 times [2022-01-10 17:59:25,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:25,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110092499] [2022-01-10 17:59:25,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:25,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:25,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:25,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:25,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110092499] [2022-01-10 17:59:25,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110092499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:25,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:25,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:59:25,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921289535] [2022-01-10 17:59:25,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:25,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:25,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:25,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:25,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:25,452 INFO L87 Difference]: Start difference. First operand 1254 states and 2035 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:25,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:25,544 INFO L93 Difference]: Finished difference Result 3622 states and 5889 transitions. [2022-01-10 17:59:25,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:25,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 17:59:25,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:25,553 INFO L225 Difference]: With dead ends: 3622 [2022-01-10 17:59:25,553 INFO L226 Difference]: Without dead ends: 2390 [2022-01-10 17:59:25,554 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 17:59:25,555 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 212 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:25,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 480 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:25,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2390 states. [2022-01-10 17:59:25,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2390 to 1710. [2022-01-10 17:59:25,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1710 states, 1708 states have (on average 1.670374707259953) internal successors, (2853), 1709 states have internal predecessors, (2853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:25,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1710 states to 1710 states and 2853 transitions. [2022-01-10 17:59:25,647 INFO L78 Accepts]: Start accepts. Automaton has 1710 states and 2853 transitions. Word has length 61 [2022-01-10 17:59:25,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:25,647 INFO L470 AbstractCegarLoop]: Abstraction has 1710 states and 2853 transitions. [2022-01-10 17:59:25,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:25,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1710 states and 2853 transitions. [2022-01-10 17:59:25,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 17:59:25,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:25,649 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:25,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 17:59:25,649 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:59:25,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:25,649 INFO L85 PathProgramCache]: Analyzing trace with hash -507407025, now seen corresponding path program 1 times [2022-01-10 17:59:25,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:25,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628306044] [2022-01-10 17:59:25,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:25,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:25,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:25,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628306044] [2022-01-10 17:59:25,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628306044] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:25,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:25,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:59:25,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355751384] [2022-01-10 17:59:25,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:25,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:25,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:25,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:25,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:25,693 INFO L87 Difference]: Start difference. First operand 1710 states and 2853 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 17:59:25,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:25,807 INFO L93 Difference]: Finished difference Result 5054 states and 8439 transitions. [2022-01-10 17:59:25,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:25,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 17:59:25,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:25,818 INFO L225 Difference]: With dead ends: 5054 [2022-01-10 17:59:25,818 INFO L226 Difference]: Without dead ends: 3366 [2022-01-10 17:59:25,822 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 17:59:25,824 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 210 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:25,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 488 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:25,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2022-01-10 17:59:25,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 2686. [2022-01-10 17:59:25,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2686 states, 2684 states have (on average 1.7023099850968704) internal successors, (4569), 2685 states have internal predecessors, (4569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:25,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2686 states to 2686 states and 4569 transitions. [2022-01-10 17:59:25,956 INFO L78 Accepts]: Start accepts. Automaton has 2686 states and 4569 transitions. Word has length 62 [2022-01-10 17:59:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:25,956 INFO L470 AbstractCegarLoop]: Abstraction has 2686 states and 4569 transitions. [2022-01-10 17:59:25,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 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 17:59:25,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2686 states and 4569 transitions. [2022-01-10 17:59:25,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 17:59:25,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:25,960 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:25,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 17:59:25,960 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:59:25,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:25,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1469427372, now seen corresponding path program 1 times [2022-01-10 17:59:25,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:25,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208226319] [2022-01-10 17:59:25,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:25,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:26,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:26,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208226319] [2022-01-10 17:59:26,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208226319] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:26,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:26,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:59:26,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264172025] [2022-01-10 17:59:26,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:26,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:26,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:26,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:26,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:26,012 INFO L87 Difference]: Start difference. First operand 2686 states and 4569 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 17:59:26,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:26,223 INFO L93 Difference]: Finished difference Result 7950 states and 13523 transitions. [2022-01-10 17:59:26,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:26,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 17:59:26,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:26,240 INFO L225 Difference]: With dead ends: 7950 [2022-01-10 17:59:26,240 INFO L226 Difference]: Without dead ends: 5286 [2022-01-10 17:59:26,244 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 17:59:26,245 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 208 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:26,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 488 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:26,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2022-01-10 17:59:26,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 4606. [2022-01-10 17:59:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4606 states, 4604 states have (on average 1.7169852302345787) internal successors, (7905), 4605 states have internal predecessors, (7905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:26,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4606 states to 4606 states and 7905 transitions. [2022-01-10 17:59:26,473 INFO L78 Accepts]: Start accepts. Automaton has 4606 states and 7905 transitions. Word has length 63 [2022-01-10 17:59:26,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:26,473 INFO L470 AbstractCegarLoop]: Abstraction has 4606 states and 7905 transitions. [2022-01-10 17:59:26,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 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 17:59:26,473 INFO L276 IsEmpty]: Start isEmpty. Operand 4606 states and 7905 transitions. [2022-01-10 17:59:26,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 17:59:26,476 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:26,476 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:26,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 17:59:26,477 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:59:26,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:26,478 INFO L85 PathProgramCache]: Analyzing trace with hash -199685354, now seen corresponding path program 1 times [2022-01-10 17:59:26,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:26,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139815513] [2022-01-10 17:59:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:26,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:26,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:26,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139815513] [2022-01-10 17:59:26,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139815513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:26,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:26,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:59:26,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553626620] [2022-01-10 17:59:26,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:26,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:26,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:26,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:26,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:26,530 INFO L87 Difference]: Start difference. First operand 4606 states and 7905 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 17:59:26,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:26,845 INFO L93 Difference]: Finished difference Result 13646 states and 23403 transitions. [2022-01-10 17:59:26,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:26,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 17:59:26,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:26,890 INFO L225 Difference]: With dead ends: 13646 [2022-01-10 17:59:26,891 INFO L226 Difference]: Without dead ends: 9062 [2022-01-10 17:59:26,908 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 17:59:26,909 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 206 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:26,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 488 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:26,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9062 states. [2022-01-10 17:59:27,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9062 to 8382. [2022-01-10 17:59:27,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8382 states, 8380 states have (on average 1.7165871121718377) internal successors, (14385), 8381 states have internal predecessors, (14385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8382 states to 8382 states and 14385 transitions. [2022-01-10 17:59:27,271 INFO L78 Accepts]: Start accepts. Automaton has 8382 states and 14385 transitions. Word has length 64 [2022-01-10 17:59:27,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:27,272 INFO L470 AbstractCegarLoop]: Abstraction has 8382 states and 14385 transitions. [2022-01-10 17:59:27,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 17:59:27,273 INFO L276 IsEmpty]: Start isEmpty. Operand 8382 states and 14385 transitions. [2022-01-10 17:59:27,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 17:59:27,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:27,281 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:27,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 17:59:27,281 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:59:27,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:27,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1407757052, now seen corresponding path program 1 times [2022-01-10 17:59:27,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:27,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539592925] [2022-01-10 17:59:27,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:27,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:27,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 17:59:27,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:27,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539592925] [2022-01-10 17:59:27,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539592925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:27,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:27,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:59:27,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051819740] [2022-01-10 17:59:27,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:27,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:59:27,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:27,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:59:27,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:59:27,364 INFO L87 Difference]: Start difference. First operand 8382 states and 14385 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:27,551 INFO L93 Difference]: Finished difference Result 9197 states and 15729 transitions. [2022-01-10 17:59:27,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:59:27,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 17:59:27,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:27,562 INFO L225 Difference]: With dead ends: 9197 [2022-01-10 17:59:27,562 INFO L226 Difference]: Without dead ends: 4962 [2022-01-10 17:59:27,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:59:27,568 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 259 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:27,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 377 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:27,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4962 states. [2022-01-10 17:59:27,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4962 to 4162. [2022-01-10 17:59:27,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4162 states, 4160 states have (on average 1.6745192307692307) internal successors, (6966), 4161 states have internal predecessors, (6966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:27,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4162 states to 4162 states and 6966 transitions. [2022-01-10 17:59:27,783 INFO L78 Accepts]: Start accepts. Automaton has 4162 states and 6966 transitions. Word has length 65 [2022-01-10 17:59:27,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:27,783 INFO L470 AbstractCegarLoop]: Abstraction has 4162 states and 6966 transitions. [2022-01-10 17:59:27,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:27,784 INFO L276 IsEmpty]: Start isEmpty. Operand 4162 states and 6966 transitions. [2022-01-10 17:59:27,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 17:59:27,789 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:27,789 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:27,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 17:59:27,790 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:59:27,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:27,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1084966724, now seen corresponding path program 1 times [2022-01-10 17:59:27,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:27,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345513995] [2022-01-10 17:59:27,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:27,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 17:59:27,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:27,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345513995] [2022-01-10 17:59:27,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345513995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:27,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:27,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 17:59:27,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72725500] [2022-01-10 17:59:27,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:27,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 17:59:27,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:27,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 17:59:27,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 17:59:27,916 INFO L87 Difference]: Start difference. First operand 4162 states and 6966 transitions. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:28,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:28,576 INFO L93 Difference]: Finished difference Result 6379 states and 10067 transitions. [2022-01-10 17:59:28,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 17:59:28,577 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 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 17:59:28,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:28,589 INFO L225 Difference]: With dead ends: 6379 [2022-01-10 17:59:28,589 INFO L226 Difference]: Without dead ends: 6148 [2022-01-10 17:59:28,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=248, Invalid=564, Unknown=0, NotChecked=0, Total=812 [2022-01-10 17:59:28,592 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 2269 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2269 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:28,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2269 Valid, 2296 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 17:59:28,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6148 states. [2022-01-10 17:59:28,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6148 to 4396. [2022-01-10 17:59:28,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4396 states, 4394 states have (on average 1.6618115612198452) internal successors, (7302), 4395 states have internal predecessors, (7302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:28,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4396 states to 4396 states and 7302 transitions. [2022-01-10 17:59:28,787 INFO L78 Accepts]: Start accepts. Automaton has 4396 states and 7302 transitions. Word has length 67 [2022-01-10 17:59:28,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:28,787 INFO L470 AbstractCegarLoop]: Abstraction has 4396 states and 7302 transitions. [2022-01-10 17:59:28,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:28,787 INFO L276 IsEmpty]: Start isEmpty. Operand 4396 states and 7302 transitions. [2022-01-10 17:59:28,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 17:59:28,792 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:28,792 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:28,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 17:59:28,792 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 17:59:28,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:28,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1457994980, now seen corresponding path program 1 times [2022-01-10 17:59:28,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:28,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360657201] [2022-01-10 17:59:28,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:28,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:28,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 17:59:28,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:28,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360657201] [2022-01-10 17:59:28,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360657201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:28,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:28,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 17:59:28,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088147043] [2022-01-10 17:59:28,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:28,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 17:59:28,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:28,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 17:59:28,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 17:59:28,901 INFO L87 Difference]: Start difference. First operand 4396 states and 7302 transitions. Second operand has 4 states, 4 states have (on average 16.75) 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 17:59:29,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:29,074 INFO L93 Difference]: Finished difference Result 4570 states and 7542 transitions. [2022-01-10 17:59:29,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 17:59:29,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) 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 68 [2022-01-10 17:59:29,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:29,074 INFO L225 Difference]: With dead ends: 4570 [2022-01-10 17:59:29,074 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 17:59:29,079 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 17:59:29,080 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 161 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:29,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 729 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:29,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 17:59:29,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 17:59:29,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:29,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 17:59:29,081 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 68 [2022-01-10 17:59:29,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:29,081 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 17:59:29,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) 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 17:59:29,081 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 17:59:29,081 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 17:59:29,083 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-10 17:59:29,084 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-10 17:59:29,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 17:59:29,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 17:59:58,574 WARN L228 SmtUtils]: Spent 23.51s on a formula simplification. DAG size of input: 163 DAG size of output: 163 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 18:00:29,091 WARN L228 SmtUtils]: Spent 25.24s on a formula simplification. DAG size of input: 163 DAG size of output: 163 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)