/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec0_product16.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:49:18,001 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:49:18,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:49:18,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:49:18,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:49:18,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:49:18,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:49:18,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:49:18,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:49:18,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:49:18,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:49:18,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:49:18,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:49:18,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:49:18,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:49:18,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:49:18,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:49:18,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:49:18,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:49:18,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:49:18,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:49:18,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:49:18,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:49:18,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:49:18,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:49:18,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:49:18,082 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:49:18,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:49:18,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:49:18,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:49:18,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:49:18,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:49:18,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:49:18,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:49:18,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:49:18,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:49:18,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:49:18,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:49:18,087 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:49:18,087 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:49:18,088 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:49:18,094 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:49:18,119 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:49:18,119 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:49:18,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:49:18,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:49:18,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:49:18,121 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:49:18,121 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:49:18,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:49:18,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:49:18,121 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:49:18,121 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:49:18,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:49:18,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:49:18,121 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:49:18,122 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:49:18,122 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:49:18,122 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:49:18,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:49:18,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:49:18,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:49:18,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:49:18,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:49:18,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:49:18,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:49:18,123 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:49:18,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:49:18,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:49:18,123 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:49:18,123 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:49:18,123 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:49:18,123 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:49:18,124 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:49:18,124 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:49:18,124 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:49:18,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:49:18,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:49:18,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:49:18,352 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:49:18,352 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:49:18,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product16.cil.c [2022-01-10 23:49:18,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4105767d6/95eccfd9ac5a4191a245a5c5d0704c61/FLAG23a97e62f [2022-01-10 23:49:18,833 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:49:18,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product16.cil.c [2022-01-10 23:49:18,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4105767d6/95eccfd9ac5a4191a245a5c5d0704c61/FLAG23a97e62f [2022-01-10 23:49:19,385 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4105767d6/95eccfd9ac5a4191a245a5c5d0704c61 [2022-01-10 23:49:19,387 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:49:19,388 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:49:19,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:49:19,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:49:19,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:49:19,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:49:19" (1/1) ... [2022-01-10 23:49:19,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23796cd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:19, skipping insertion in model container [2022-01-10 23:49:19,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:49:19" (1/1) ... [2022-01-10 23:49:19,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:49:19,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:49:19,648 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_product16.cil.c[7449,7462] [2022-01-10 23:49:19,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:49:19,824 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:49:19,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:49:19,874 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_product16.cil.c[7449,7462] [2022-01-10 23:49:19,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:49:19,940 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:49:19,958 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_product16.cil.c[7449,7462] [2022-01-10 23:49:20,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:49:20,049 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:49:20,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:20 WrapperNode [2022-01-10 23:49:20,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:49:20,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:49:20,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:49:20,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:49:20,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:20" (1/1) ... [2022-01-10 23:49:20,085 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:20" (1/1) ... [2022-01-10 23:49:20,146 INFO L137 Inliner]: procedures = 127, calls = 195, calls flagged for inlining = 109, calls inlined = 147, statements flattened = 2160 [2022-01-10 23:49:20,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:49:20,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:49:20,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:49:20,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:49:20,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:20" (1/1) ... [2022-01-10 23:49:20,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:20" (1/1) ... [2022-01-10 23:49:20,172 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:20" (1/1) ... [2022-01-10 23:49:20,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:20" (1/1) ... [2022-01-10 23:49:20,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:20" (1/1) ... [2022-01-10 23:49:20,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:20" (1/1) ... [2022-01-10 23:49:20,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:20" (1/1) ... [2022-01-10 23:49:20,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:49:20,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:49:20,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:49:20,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:49:20,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:20" (1/1) ... [2022-01-10 23:49:20,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:49:20,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:49:20,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 23:49:20,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 23:49:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:49:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:49:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:49:20,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:49:20,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:49:20,466 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:49:20,468 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:49:21,393 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:49:21,408 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:49:21,408 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:49:21,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:49:21 BoogieIcfgContainer [2022-01-10 23:49:21,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:49:21,411 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:49:21,411 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:49:21,413 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:49:21,415 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:49:21" (1/1) ... [2022-01-10 23:49:21,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:49:21 BasicIcfg [2022-01-10 23:49:21,676 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:49:21,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:49:21,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:49:21,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:49:21,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:49:19" (1/4) ... [2022-01-10 23:49:21,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267c18b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:49:21, skipping insertion in model container [2022-01-10 23:49:21,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:49:20" (2/4) ... [2022-01-10 23:49:21,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267c18b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:49:21, skipping insertion in model container [2022-01-10 23:49:21,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:49:21" (3/4) ... [2022-01-10 23:49:21,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267c18b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:49:21, skipping insertion in model container [2022-01-10 23:49:21,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:49:21" (4/4) ... [2022-01-10 23:49:21,682 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product16.cil.cTransformedIcfg [2022-01-10 23:49:21,686 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:49:21,686 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 23:49:21,730 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:49:21,736 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 23:49:21,736 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 23:49:21,759 INFO L276 IsEmpty]: Start isEmpty. Operand has 488 states, 485 states have (on average 1.6804123711340206) internal successors, (815), 487 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:21,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 23:49:21,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:21,777 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:21,778 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:21,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:21,781 INFO L85 PathProgramCache]: Analyzing trace with hash -669770637, now seen corresponding path program 1 times [2022-01-10 23:49:21,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:21,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347869510] [2022-01-10 23:49:21,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:21,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:22,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:22,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:22,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347869510] [2022-01-10 23:49:22,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347869510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:22,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:22,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:49:22,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171709971] [2022-01-10 23:49:22,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:22,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:49:22,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:22,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:49:22,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:49:22,114 INFO L87 Difference]: Start difference. First operand has 488 states, 485 states have (on average 1.6804123711340206) internal successors, (815), 487 states have internal predecessors, (815), 0 states have call successors, (0), 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 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:22,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:22,161 INFO L93 Difference]: Finished difference Result 715 states and 1170 transitions. [2022-01-10 23:49:22,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:49:22,164 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 23:49:22,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:22,178 INFO L225 Difference]: With dead ends: 715 [2022-01-10 23:49:22,179 INFO L226 Difference]: Without dead ends: 449 [2022-01-10 23:49:22,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:49:22,187 INFO L933 BasicCegarLoop]: 809 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, 809 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:22,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:22,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-01-10 23:49:22,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2022-01-10 23:49:22,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 447 states have (on average 1.691275167785235) internal successors, (756), 448 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:22,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 756 transitions. [2022-01-10 23:49:22,239 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 756 transitions. Word has length 62 [2022-01-10 23:49:22,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:22,240 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 756 transitions. [2022-01-10 23:49:22,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:22,240 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 756 transitions. [2022-01-10 23:49:22,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 23:49:22,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:22,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:22,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:49:22,242 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:22,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:22,243 INFO L85 PathProgramCache]: Analyzing trace with hash -497126307, now seen corresponding path program 1 times [2022-01-10 23:49:22,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:22,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064618382] [2022-01-10 23:49:22,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:22,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:22,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:22,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:22,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064618382] [2022-01-10 23:49:22,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064618382] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:22,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:22,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:49:22,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736888204] [2022-01-10 23:49:22,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:22,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:49:22,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:22,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:49:22,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:22,515 INFO L87 Difference]: Start difference. First operand 449 states and 756 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 23:49:22,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:22,600 INFO L93 Difference]: Finished difference Result 879 states and 1484 transitions. [2022-01-10 23:49:22,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:49:22,600 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 23:49:22,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:22,602 INFO L225 Difference]: With dead ends: 879 [2022-01-10 23:49:22,602 INFO L226 Difference]: Without dead ends: 449 [2022-01-10 23:49:22,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:22,604 INFO L933 BasicCegarLoop]: 737 mSDtfsCounter, 731 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:22,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 750 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:22,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-01-10 23:49:22,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2022-01-10 23:49:22,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 447 states have (on average 1.686800894854586) internal successors, (754), 448 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:22,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 754 transitions. [2022-01-10 23:49:22,628 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 754 transitions. Word has length 63 [2022-01-10 23:49:22,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:22,628 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 754 transitions. [2022-01-10 23:49:22,629 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 23:49:22,629 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 754 transitions. [2022-01-10 23:49:22,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 23:49:22,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:22,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:22,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:49:22,630 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:22,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:22,631 INFO L85 PathProgramCache]: Analyzing trace with hash 745038941, now seen corresponding path program 1 times [2022-01-10 23:49:22,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:22,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045531653] [2022-01-10 23:49:22,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:22,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:22,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:22,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:22,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045531653] [2022-01-10 23:49:22,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045531653] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:22,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:22,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:49:22,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675406399] [2022-01-10 23:49:22,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:22,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:49:22,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:22,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:49:22,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:49:22,760 INFO L87 Difference]: Start difference. First operand 449 states and 754 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 23:49:22,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:22,929 INFO L93 Difference]: Finished difference Result 2113 states and 3566 transitions. [2022-01-10 23:49:22,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:49:22,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 23:49:22,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:22,937 INFO L225 Difference]: With dead ends: 2113 [2022-01-10 23:49:22,937 INFO L226 Difference]: Without dead ends: 1688 [2022-01-10 23:49:22,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:49:22,943 INFO L933 BasicCegarLoop]: 1431 mSDtfsCounter, 3553 mSDsluCounter, 2134 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3553 SdHoareTripleChecker+Valid, 3565 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:22,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3553 Valid, 3565 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:49:22,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2022-01-10 23:49:22,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 449. [2022-01-10 23:49:22,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 447 states have (on average 1.6845637583892616) internal successors, (753), 448 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:22,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 753 transitions. [2022-01-10 23:49:22,985 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 753 transitions. Word has length 65 [2022-01-10 23:49:22,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:22,985 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 753 transitions. [2022-01-10 23:49:22,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 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 23:49:22,986 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 753 transitions. [2022-01-10 23:49:22,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 23:49:22,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:22,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:22,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:49:22,989 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:22,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:22,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1174317223, now seen corresponding path program 1 times [2022-01-10 23:49:22,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:22,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297948452] [2022-01-10 23:49:22,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:22,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:23,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:23,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:23,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297948452] [2022-01-10 23:49:23,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297948452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:23,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:23,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:49:23,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386325264] [2022-01-10 23:49:23,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:23,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:49:23,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:23,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:49:23,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:23,116 INFO L87 Difference]: Start difference. First operand 449 states and 753 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 23:49:23,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:23,156 INFO L93 Difference]: Finished difference Result 883 states and 1484 transitions. [2022-01-10 23:49:23,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:49:23,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 66 [2022-01-10 23:49:23,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:23,159 INFO L225 Difference]: With dead ends: 883 [2022-01-10 23:49:23,160 INFO L226 Difference]: Without dead ends: 463 [2022-01-10 23:49:23,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:23,175 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 732 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:23,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 789 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:23,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-01-10 23:49:23,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 449. [2022-01-10 23:49:23,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 447 states have (on average 1.6823266219239374) internal successors, (752), 448 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:23,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 752 transitions. [2022-01-10 23:49:23,201 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 752 transitions. Word has length 66 [2022-01-10 23:49:23,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:23,202 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 752 transitions. [2022-01-10 23:49:23,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 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 23:49:23,202 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 752 transitions. [2022-01-10 23:49:23,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 23:49:23,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:23,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:23,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:49:23,203 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:23,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:23,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1843720894, now seen corresponding path program 1 times [2022-01-10 23:49:23,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:23,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104551497] [2022-01-10 23:49:23,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:23,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:23,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:23,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:23,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104551497] [2022-01-10 23:49:23,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104551497] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:23,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:23,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:49:23,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505109402] [2022-01-10 23:49:23,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:23,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:49:23,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:23,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:49:23,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:49:23,315 INFO L87 Difference]: Start difference. First operand 449 states and 752 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:23,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:23,486 INFO L93 Difference]: Finished difference Result 1281 states and 2156 transitions. [2022-01-10 23:49:23,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:49:23,487 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 23:49:23,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:23,490 INFO L225 Difference]: With dead ends: 1281 [2022-01-10 23:49:23,490 INFO L226 Difference]: Without dead ends: 866 [2022-01-10 23:49:23,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:49:23,491 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 3476 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3476 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:23,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3476 Valid, 1536 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:49:23,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-01-10 23:49:23,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 449. [2022-01-10 23:49:23,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 447 states have (on average 1.6778523489932886) internal successors, (750), 448 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:23,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 750 transitions. [2022-01-10 23:49:23,524 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 750 transitions. Word has length 67 [2022-01-10 23:49:23,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:23,528 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 750 transitions. [2022-01-10 23:49:23,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:23,528 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 750 transitions. [2022-01-10 23:49:23,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:49:23,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:23,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:23,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:49:23,530 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:23,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:23,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1777429285, now seen corresponding path program 1 times [2022-01-10 23:49:23,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:23,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010175310] [2022-01-10 23:49:23,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:23,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:23,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:23,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:23,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010175310] [2022-01-10 23:49:23,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010175310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:23,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:23,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:49:23,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437071833] [2022-01-10 23:49:23,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:23,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:49:23,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:23,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:49:23,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:49:23,672 INFO L87 Difference]: Start difference. First operand 449 states and 750 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:24,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:24,211 INFO L93 Difference]: Finished difference Result 2047 states and 3265 transitions. [2022-01-10 23:49:24,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:49:24,211 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 23:49:24,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:24,218 INFO L225 Difference]: With dead ends: 2047 [2022-01-10 23:49:24,218 INFO L226 Difference]: Without dead ends: 1877 [2022-01-10 23:49:24,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:49:24,219 INFO L933 BasicCegarLoop]: 1008 mSDtfsCounter, 4895 mSDsluCounter, 6410 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4895 SdHoareTripleChecker+Valid, 7418 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:24,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4895 Valid, 7418 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:49:24,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2022-01-10 23:49:24,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 792. [2022-01-10 23:49:24,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 790 states have (on average 1.6949367088607594) internal successors, (1339), 791 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:24,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1339 transitions. [2022-01-10 23:49:24,299 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1339 transitions. Word has length 69 [2022-01-10 23:49:24,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:24,299 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 1339 transitions. [2022-01-10 23:49:24,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:24,300 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1339 transitions. [2022-01-10 23:49:24,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:49:24,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:24,301 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:24,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:49:24,301 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:24,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:24,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1000316132, now seen corresponding path program 1 times [2022-01-10 23:49:24,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:24,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606453257] [2022-01-10 23:49:24,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:24,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:24,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:24,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606453257] [2022-01-10 23:49:24,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606453257] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:24,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:24,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:49:24,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733715364] [2022-01-10 23:49:24,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:24,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:49:24,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:24,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:49:24,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:49:24,409 INFO L87 Difference]: Start difference. First operand 792 states and 1339 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:24,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:24,994 INFO L93 Difference]: Finished difference Result 3132 states and 5031 transitions. [2022-01-10 23:49:24,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:49:24,994 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 23:49:24,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:25,002 INFO L225 Difference]: With dead ends: 3132 [2022-01-10 23:49:25,003 INFO L226 Difference]: Without dead ends: 2863 [2022-01-10 23:49:25,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:49:25,004 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 4885 mSDsluCounter, 5701 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4885 SdHoareTripleChecker+Valid, 6569 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:25,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4885 Valid, 6569 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:49:25,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2022-01-10 23:49:25,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 1481. [2022-01-10 23:49:25,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1481 states, 1479 states have (on average 1.7052062204192022) internal successors, (2522), 1480 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:25,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1481 states to 1481 states and 2522 transitions. [2022-01-10 23:49:25,137 INFO L78 Accepts]: Start accepts. Automaton has 1481 states and 2522 transitions. Word has length 70 [2022-01-10 23:49:25,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:25,137 INFO L470 AbstractCegarLoop]: Abstraction has 1481 states and 2522 transitions. [2022-01-10 23:49:25,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 8 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:25,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1481 states and 2522 transitions. [2022-01-10 23:49:25,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:49:25,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:25,143 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:25,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:49:25,143 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:25,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:25,143 INFO L85 PathProgramCache]: Analyzing trace with hash -38702115, now seen corresponding path program 1 times [2022-01-10 23:49:25,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:25,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088106012] [2022-01-10 23:49:25,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:25,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:25,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:25,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:25,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088106012] [2022-01-10 23:49:25,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088106012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:25,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:25,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:49:25,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563928619] [2022-01-10 23:49:25,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:25,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:49:25,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:25,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:49:25,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:49:25,246 INFO L87 Difference]: Start difference. First operand 1481 states and 2522 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:25,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:25,711 INFO L93 Difference]: Finished difference Result 6758 states and 11350 transitions. [2022-01-10 23:49:25,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:49:25,712 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 23:49:25,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:25,732 INFO L225 Difference]: With dead ends: 6758 [2022-01-10 23:49:25,732 INFO L226 Difference]: Without dead ends: 6454 [2022-01-10 23:49:25,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:49:25,736 INFO L933 BasicCegarLoop]: 919 mSDtfsCounter, 3778 mSDsluCounter, 3818 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3778 SdHoareTripleChecker+Valid, 4737 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:25,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3778 Valid, 4737 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:49:25,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6454 states. [2022-01-10 23:49:25,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6454 to 2915. [2022-01-10 23:49:25,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2915 states, 2913 states have (on average 1.7061448678338482) internal successors, (4970), 2914 states have internal predecessors, (4970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:25,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2915 states to 2915 states and 4970 transitions. [2022-01-10 23:49:25,940 INFO L78 Accepts]: Start accepts. Automaton has 2915 states and 4970 transitions. Word has length 70 [2022-01-10 23:49:25,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:25,940 INFO L470 AbstractCegarLoop]: Abstraction has 2915 states and 4970 transitions. [2022-01-10 23:49:25,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:25,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2915 states and 4970 transitions. [2022-01-10 23:49:25,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 23:49:25,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:25,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:25,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:49:25,944 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:25,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:25,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1989387634, now seen corresponding path program 1 times [2022-01-10 23:49:25,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:25,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564779895] [2022-01-10 23:49:25,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:25,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:25,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:26,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:26,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:26,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564779895] [2022-01-10 23:49:26,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564779895] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:26,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:26,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:49:26,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023945061] [2022-01-10 23:49:26,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:26,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:49:26,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:26,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:49:26,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:49:26,029 INFO L87 Difference]: Start difference. First operand 2915 states and 4970 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:26,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:26,895 INFO L93 Difference]: Finished difference Result 13227 states and 22254 transitions. [2022-01-10 23:49:26,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:49:26,895 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 23:49:26,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:26,942 INFO L225 Difference]: With dead ends: 13227 [2022-01-10 23:49:26,942 INFO L226 Difference]: Without dead ends: 12660 [2022-01-10 23:49:26,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:49:26,951 INFO L933 BasicCegarLoop]: 954 mSDtfsCounter, 3615 mSDsluCounter, 3108 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3615 SdHoareTripleChecker+Valid, 4062 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:26,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3615 Valid, 4062 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:49:26,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12660 states. [2022-01-10 23:49:27,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12660 to 5760. [2022-01-10 23:49:27,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5760 states, 5758 states have (on average 1.7082320250086835) internal successors, (9836), 5759 states have internal predecessors, (9836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:27,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5760 states to 5760 states and 9836 transitions. [2022-01-10 23:49:27,349 INFO L78 Accepts]: Start accepts. Automaton has 5760 states and 9836 transitions. Word has length 71 [2022-01-10 23:49:27,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:27,350 INFO L470 AbstractCegarLoop]: Abstraction has 5760 states and 9836 transitions. [2022-01-10 23:49:27,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:27,350 INFO L276 IsEmpty]: Start isEmpty. Operand 5760 states and 9836 transitions. [2022-01-10 23:49:27,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 23:49:27,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:27,356 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:27,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:49:27,356 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:27,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:27,357 INFO L85 PathProgramCache]: Analyzing trace with hash -534148443, now seen corresponding path program 1 times [2022-01-10 23:49:27,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:27,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287406434] [2022-01-10 23:49:27,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:27,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:27,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:27,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:27,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287406434] [2022-01-10 23:49:27,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287406434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:27,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:27,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:49:27,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412259530] [2022-01-10 23:49:27,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:27,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:49:27,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:27,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:49:27,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:49:27,415 INFO L87 Difference]: Start difference. First operand 5760 states and 9836 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:28,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:28,093 INFO L93 Difference]: Finished difference Result 16936 states and 28984 transitions. [2022-01-10 23:49:28,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:49:28,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 23:49:28,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:28,113 INFO L225 Difference]: With dead ends: 16936 [2022-01-10 23:49:28,113 INFO L226 Difference]: Without dead ends: 11226 [2022-01-10 23:49:28,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:49:28,120 INFO L933 BasicCegarLoop]: 1403 mSDtfsCounter, 2187 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2187 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:28,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2187 Valid, 2106 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:28,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11226 states. [2022-01-10 23:49:28,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11226 to 5760. [2022-01-10 23:49:28,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5760 states, 5758 states have (on average 1.707884682181313) internal successors, (9834), 5759 states have internal predecessors, (9834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:28,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5760 states to 5760 states and 9834 transitions. [2022-01-10 23:49:28,594 INFO L78 Accepts]: Start accepts. Automaton has 5760 states and 9834 transitions. Word has length 71 [2022-01-10 23:49:28,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:28,594 INFO L470 AbstractCegarLoop]: Abstraction has 5760 states and 9834 transitions. [2022-01-10 23:49:28,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:28,594 INFO L276 IsEmpty]: Start isEmpty. Operand 5760 states and 9834 transitions. [2022-01-10 23:49:28,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:49:28,601 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:28,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:28,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:49:28,601 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:28,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:28,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1979933593, now seen corresponding path program 1 times [2022-01-10 23:49:28,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:28,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742496365] [2022-01-10 23:49:28,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:28,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:28,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:28,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:28,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:28,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742496365] [2022-01-10 23:49:28,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742496365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:28,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:28,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:49:28,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974963181] [2022-01-10 23:49:28,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:28,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:49:28,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:28,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:49:28,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:49:28,666 INFO L87 Difference]: Start difference. First operand 5760 states and 9834 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:29,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:29,441 INFO L93 Difference]: Finished difference Result 16958 states and 29000 transitions. [2022-01-10 23:49:29,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:49:29,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 23:49:29,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:29,462 INFO L225 Difference]: With dead ends: 16958 [2022-01-10 23:49:29,462 INFO L226 Difference]: Without dead ends: 11258 [2022-01-10 23:49:29,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:49:29,469 INFO L933 BasicCegarLoop]: 1408 mSDtfsCounter, 2172 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:29,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2172 Valid, 2138 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:49:29,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11258 states. [2022-01-10 23:49:29,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11258 to 5760. [2022-01-10 23:49:29,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5760 states, 5758 states have (on average 1.7075373393539424) internal successors, (9832), 5759 states have internal predecessors, (9832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:29,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5760 states to 5760 states and 9832 transitions. [2022-01-10 23:49:29,901 INFO L78 Accepts]: Start accepts. Automaton has 5760 states and 9832 transitions. Word has length 72 [2022-01-10 23:49:29,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:29,901 INFO L470 AbstractCegarLoop]: Abstraction has 5760 states and 9832 transitions. [2022-01-10 23:49:29,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:29,901 INFO L276 IsEmpty]: Start isEmpty. Operand 5760 states and 9832 transitions. [2022-01-10 23:49:29,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:49:29,909 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:29,909 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:29,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:49:29,910 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:29,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:29,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1541924090, now seen corresponding path program 1 times [2022-01-10 23:49:29,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:29,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918961733] [2022-01-10 23:49:29,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:29,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:30,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:30,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918961733] [2022-01-10 23:49:30,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918961733] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:30,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:30,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:49:30,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42475074] [2022-01-10 23:49:30,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:30,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:49:30,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:30,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:49:30,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:49:30,041 INFO L87 Difference]: Start difference. First operand 5760 states and 9832 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:32,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:32,249 INFO L93 Difference]: Finished difference Result 14551 states and 22901 transitions. [2022-01-10 23:49:32,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-10 23:49:32,249 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 23:49:32,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:32,270 INFO L225 Difference]: With dead ends: 14551 [2022-01-10 23:49:32,271 INFO L226 Difference]: Without dead ends: 13557 [2022-01-10 23:49:32,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=381, Invalid=951, Unknown=0, NotChecked=0, Total=1332 [2022-01-10 23:49:32,276 INFO L933 BasicCegarLoop]: 1216 mSDtfsCounter, 4208 mSDsluCounter, 7416 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4208 SdHoareTripleChecker+Valid, 8632 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:32,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4208 Valid, 8632 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:49:32,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13557 states. [2022-01-10 23:49:32,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13557 to 6810. [2022-01-10 23:49:32,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6810 states, 6808 states have (on average 1.6883078730904817) internal successors, (11494), 6809 states have internal predecessors, (11494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:32,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6810 states to 6810 states and 11494 transitions. [2022-01-10 23:49:32,865 INFO L78 Accepts]: Start accepts. Automaton has 6810 states and 11494 transitions. Word has length 72 [2022-01-10 23:49:32,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:32,865 INFO L470 AbstractCegarLoop]: Abstraction has 6810 states and 11494 transitions. [2022-01-10 23:49:32,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:32,865 INFO L276 IsEmpty]: Start isEmpty. Operand 6810 states and 11494 transitions. [2022-01-10 23:49:32,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:49:32,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:32,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:32,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:49:32,872 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:32,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:32,872 INFO L85 PathProgramCache]: Analyzing trace with hash -699793363, now seen corresponding path program 1 times [2022-01-10 23:49:32,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:32,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883644480] [2022-01-10 23:49:32,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:32,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:32,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:32,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883644480] [2022-01-10 23:49:32,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883644480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:32,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:32,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:49:32,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791408394] [2022-01-10 23:49:32,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:32,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:49:32,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:32,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:49:32,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:49:32,937 INFO L87 Difference]: Start difference. First operand 6810 states and 11494 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:33,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:33,586 INFO L93 Difference]: Finished difference Result 8138 states and 13508 transitions. [2022-01-10 23:49:33,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:49:33,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 23:49:33,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:33,598 INFO L225 Difference]: With dead ends: 8138 [2022-01-10 23:49:33,598 INFO L226 Difference]: Without dead ends: 7522 [2022-01-10 23:49:33,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:49:33,601 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 758 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:33,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 1814 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:33,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7522 states. [2022-01-10 23:49:34,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7522 to 6810. [2022-01-10 23:49:34,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6810 states, 6808 states have (on average 1.687720329024677) internal successors, (11490), 6809 states have internal predecessors, (11490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:34,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6810 states to 6810 states and 11490 transitions. [2022-01-10 23:49:34,251 INFO L78 Accepts]: Start accepts. Automaton has 6810 states and 11490 transitions. Word has length 72 [2022-01-10 23:49:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:34,251 INFO L470 AbstractCegarLoop]: Abstraction has 6810 states and 11490 transitions. [2022-01-10 23:49:34,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:34,252 INFO L276 IsEmpty]: Start isEmpty. Operand 6810 states and 11490 transitions. [2022-01-10 23:49:34,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:49:34,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:34,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:34,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:49:34,258 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:34,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:34,258 INFO L85 PathProgramCache]: Analyzing trace with hash 325698636, now seen corresponding path program 1 times [2022-01-10 23:49:34,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:34,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174162180] [2022-01-10 23:49:34,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:34,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:34,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:34,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:34,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:34,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174162180] [2022-01-10 23:49:34,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174162180] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:34,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:34,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:49:34,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910095153] [2022-01-10 23:49:34,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:34,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:49:34,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:34,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:49:34,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:49:34,334 INFO L87 Difference]: Start difference. First operand 6810 states and 11490 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:35,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:35,770 INFO L93 Difference]: Finished difference Result 13716 states and 21928 transitions. [2022-01-10 23:49:35,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:49:35,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 23:49:35,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:35,784 INFO L225 Difference]: With dead ends: 13716 [2022-01-10 23:49:35,785 INFO L226 Difference]: Without dead ends: 11848 [2022-01-10 23:49:35,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:49:35,789 INFO L933 BasicCegarLoop]: 1002 mSDtfsCounter, 1975 mSDsluCounter, 2560 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1975 SdHoareTripleChecker+Valid, 3562 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:35,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1975 Valid, 3562 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:49:35,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11848 states. [2022-01-10 23:49:36,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11848 to 7186. [2022-01-10 23:49:36,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7186 states, 7184 states have (on average 1.6734409799554566) internal successors, (12022), 7185 states have internal predecessors, (12022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:36,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7186 states to 7186 states and 12022 transitions. [2022-01-10 23:49:36,446 INFO L78 Accepts]: Start accepts. Automaton has 7186 states and 12022 transitions. Word has length 72 [2022-01-10 23:49:36,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:36,446 INFO L470 AbstractCegarLoop]: Abstraction has 7186 states and 12022 transitions. [2022-01-10 23:49:36,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:36,446 INFO L276 IsEmpty]: Start isEmpty. Operand 7186 states and 12022 transitions. [2022-01-10 23:49:36,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:49:36,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:36,452 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:36,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:49:36,452 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:36,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:36,453 INFO L85 PathProgramCache]: Analyzing trace with hash 791985038, now seen corresponding path program 1 times [2022-01-10 23:49:36,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:36,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331460715] [2022-01-10 23:49:36,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:36,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:36,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:36,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331460715] [2022-01-10 23:49:36,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331460715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:36,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:36,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:49:36,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331291844] [2022-01-10 23:49:36,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:36,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 23:49:36,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:36,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 23:49:36,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:49:36,536 INFO L87 Difference]: Start difference. First operand 7186 states and 12022 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:38,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:38,181 INFO L93 Difference]: Finished difference Result 13605 states and 21665 transitions. [2022-01-10 23:49:38,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:49:38,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-10 23:49:38,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:38,195 INFO L225 Difference]: With dead ends: 13605 [2022-01-10 23:49:38,195 INFO L226 Difference]: Without dead ends: 11971 [2022-01-10 23:49:38,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2022-01-10 23:49:38,199 INFO L933 BasicCegarLoop]: 1375 mSDtfsCounter, 2338 mSDsluCounter, 5231 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 6606 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:38,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2338 Valid, 6606 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:49:38,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11971 states. [2022-01-10 23:49:38,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11971 to 7711. [2022-01-10 23:49:38,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7711 states, 7709 states have (on average 1.6629913088597743) internal successors, (12820), 7710 states have internal predecessors, (12820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:38,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7711 states to 7711 states and 12820 transitions. [2022-01-10 23:49:38,930 INFO L78 Accepts]: Start accepts. Automaton has 7711 states and 12820 transitions. Word has length 72 [2022-01-10 23:49:38,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:38,931 INFO L470 AbstractCegarLoop]: Abstraction has 7711 states and 12820 transitions. [2022-01-10 23:49:38,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:38,931 INFO L276 IsEmpty]: Start isEmpty. Operand 7711 states and 12820 transitions. [2022-01-10 23:49:38,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 23:49:38,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:38,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:38,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:49:38,937 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:38,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:38,938 INFO L85 PathProgramCache]: Analyzing trace with hash -367321440, now seen corresponding path program 1 times [2022-01-10 23:49:38,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:38,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448317785] [2022-01-10 23:49:38,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:38,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:39,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:39,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:39,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448317785] [2022-01-10 23:49:39,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448317785] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:39,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:39,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 23:49:39,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516734266] [2022-01-10 23:49:39,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:39,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 23:49:39,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:39,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 23:49:39,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:49:39,025 INFO L87 Difference]: Start difference. First operand 7711 states and 12820 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:39,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:39,980 INFO L93 Difference]: Finished difference Result 12039 states and 19375 transitions. [2022-01-10 23:49:39,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 23:49:39,980 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-10 23:49:39,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:40,006 INFO L225 Difference]: With dead ends: 12039 [2022-01-10 23:49:40,006 INFO L226 Difference]: Without dead ends: 8174 [2022-01-10 23:49:40,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-01-10 23:49:40,012 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 1549 mSDsluCounter, 2634 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 3366 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:40,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1549 Valid, 3366 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:49:40,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8174 states. [2022-01-10 23:49:40,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8174 to 7133. [2022-01-10 23:49:40,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7133 states, 7131 states have (on average 1.6623194502874772) internal successors, (11854), 7132 states have internal predecessors, (11854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:40,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7133 states to 7133 states and 11854 transitions. [2022-01-10 23:49:40,689 INFO L78 Accepts]: Start accepts. Automaton has 7133 states and 11854 transitions. Word has length 73 [2022-01-10 23:49:40,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:40,689 INFO L470 AbstractCegarLoop]: Abstraction has 7133 states and 11854 transitions. [2022-01-10 23:49:40,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:40,689 INFO L276 IsEmpty]: Start isEmpty. Operand 7133 states and 11854 transitions. [2022-01-10 23:49:40,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 23:49:40,694 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:40,694 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:40,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:49:40,695 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:40,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:40,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1490271071, now seen corresponding path program 1 times [2022-01-10 23:49:40,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:40,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775852470] [2022-01-10 23:49:40,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:40,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:40,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:40,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775852470] [2022-01-10 23:49:40,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775852470] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:40,771 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:40,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:49:40,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174221355] [2022-01-10 23:49:40,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:40,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:49:40,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:40,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:49:40,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:49:40,772 INFO L87 Difference]: Start difference. First operand 7133 states and 11854 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:42,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:42,519 INFO L93 Difference]: Finished difference Result 17279 states and 28078 transitions. [2022-01-10 23:49:42,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:49:42,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-10 23:49:42,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:42,538 INFO L225 Difference]: With dead ends: 17279 [2022-01-10 23:49:42,538 INFO L226 Difference]: Without dead ends: 15498 [2022-01-10 23:49:42,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:49:42,541 INFO L933 BasicCegarLoop]: 738 mSDtfsCounter, 1412 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 3003 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:42,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1412 Valid, 3003 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:42,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15498 states. [2022-01-10 23:49:43,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15498 to 13881. [2022-01-10 23:49:43,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13881 states, 13879 states have (on average 1.664168888248433) internal successors, (23097), 13880 states have internal predecessors, (23097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:43,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13881 states to 13881 states and 23097 transitions. [2022-01-10 23:49:43,968 INFO L78 Accepts]: Start accepts. Automaton has 13881 states and 23097 transitions. Word has length 73 [2022-01-10 23:49:43,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:43,968 INFO L470 AbstractCegarLoop]: Abstraction has 13881 states and 23097 transitions. [2022-01-10 23:49:43,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:43,969 INFO L276 IsEmpty]: Start isEmpty. Operand 13881 states and 23097 transitions. [2022-01-10 23:49:43,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 23:49:43,977 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:43,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:43,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 23:49:43,977 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:43,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:43,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1192733012, now seen corresponding path program 1 times [2022-01-10 23:49:43,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:43,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968872056] [2022-01-10 23:49:43,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:43,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:44,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:44,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:44,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968872056] [2022-01-10 23:49:44,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968872056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:44,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:44,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:49:44,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761053937] [2022-01-10 23:49:44,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:44,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:49:44,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:44,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:49:44,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:49:44,066 INFO L87 Difference]: Start difference. First operand 13881 states and 23097 transitions. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:45,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:45,911 INFO L93 Difference]: Finished difference Result 17299 states and 28104 transitions. [2022-01-10 23:49:45,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-10 23:49:45,913 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-01-10 23:49:45,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:45,930 INFO L225 Difference]: With dead ends: 17299 [2022-01-10 23:49:45,931 INFO L226 Difference]: Without dead ends: 14633 [2022-01-10 23:49:45,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=559, Unknown=0, NotChecked=0, Total=812 [2022-01-10 23:49:45,935 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 4321 mSDsluCounter, 3897 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4321 SdHoareTripleChecker+Valid, 4699 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:45,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4321 Valid, 4699 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:49:45,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14633 states. [2022-01-10 23:49:47,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14633 to 12630. [2022-01-10 23:49:47,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12630 states, 12628 states have (on average 1.677066835603421) internal successors, (21178), 12629 states have internal predecessors, (21178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12630 states to 12630 states and 21178 transitions. [2022-01-10 23:49:47,146 INFO L78 Accepts]: Start accepts. Automaton has 12630 states and 21178 transitions. Word has length 74 [2022-01-10 23:49:47,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:47,146 INFO L470 AbstractCegarLoop]: Abstraction has 12630 states and 21178 transitions. [2022-01-10 23:49:47,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:47,146 INFO L276 IsEmpty]: Start isEmpty. Operand 12630 states and 21178 transitions. [2022-01-10 23:49:47,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 23:49:47,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:47,160 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:47,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 23:49:47,160 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:47,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:47,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1636838234, now seen corresponding path program 1 times [2022-01-10 23:49:47,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:47,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536286071] [2022-01-10 23:49:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:47,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:47,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:47,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536286071] [2022-01-10 23:49:47,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536286071] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:47,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:47,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:49:47,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170616504] [2022-01-10 23:49:47,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:47,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:49:47,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:47,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:49:47,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:47,206 INFO L87 Difference]: Start difference. First operand 12630 states and 21178 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:49,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:49,470 INFO L93 Difference]: Finished difference Result 36054 states and 60254 transitions. [2022-01-10 23:49:49,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:49:49,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-01-10 23:49:49,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:49,508 INFO L225 Difference]: With dead ends: 36054 [2022-01-10 23:49:49,508 INFO L226 Difference]: Without dead ends: 23510 [2022-01-10 23:49:49,521 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:49,522 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 689 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:49,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 1380 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:49,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23510 states. [2022-01-10 23:49:51,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23510 to 18070. [2022-01-10 23:49:51,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18070 states, 18068 states have (on average 1.708766880673013) internal successors, (30874), 18069 states have internal predecessors, (30874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:51,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18070 states to 18070 states and 30874 transitions. [2022-01-10 23:49:51,104 INFO L78 Accepts]: Start accepts. Automaton has 18070 states and 30874 transitions. Word has length 87 [2022-01-10 23:49:51,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:51,104 INFO L470 AbstractCegarLoop]: Abstraction has 18070 states and 30874 transitions. [2022-01-10 23:49:51,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:51,104 INFO L276 IsEmpty]: Start isEmpty. Operand 18070 states and 30874 transitions. [2022-01-10 23:49:51,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 23:49:51,128 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:51,128 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:51,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 23:49:51,128 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:51,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:51,129 INFO L85 PathProgramCache]: Analyzing trace with hash 411101353, now seen corresponding path program 1 times [2022-01-10 23:49:51,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:51,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901192901] [2022-01-10 23:49:51,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:51,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:51,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:51,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:51,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901192901] [2022-01-10 23:49:51,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901192901] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:51,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:51,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:49:51,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636690133] [2022-01-10 23:49:51,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:51,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:49:51,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:51,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:49:51,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:51,175 INFO L87 Difference]: Start difference. First operand 18070 states and 30874 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:54,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:49:54,139 INFO L93 Difference]: Finished difference Result 53974 states and 92286 transitions. [2022-01-10 23:49:54,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:49:54,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 23:49:54,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:49:54,194 INFO L225 Difference]: With dead ends: 53974 [2022-01-10 23:49:54,194 INFO L226 Difference]: Without dead ends: 35990 [2022-01-10 23:49:54,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:54,218 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 687 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:49:54,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 1474 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:49:54,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35990 states. [2022-01-10 23:49:56,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35990 to 30550. [2022-01-10 23:49:56,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30550 states, 30548 states have (on average 1.7408013617912792) internal successors, (53178), 30549 states have internal predecessors, (53178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:56,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30550 states to 30550 states and 53178 transitions. [2022-01-10 23:49:56,487 INFO L78 Accepts]: Start accepts. Automaton has 30550 states and 53178 transitions. Word has length 88 [2022-01-10 23:49:56,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:49:56,487 INFO L470 AbstractCegarLoop]: Abstraction has 30550 states and 53178 transitions. [2022-01-10 23:49:56,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:49:56,488 INFO L276 IsEmpty]: Start isEmpty. Operand 30550 states and 53178 transitions. [2022-01-10 23:49:56,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 23:49:56,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:49:56,514 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:49:56,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 23:49:56,514 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:49:56,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:49:56,515 INFO L85 PathProgramCache]: Analyzing trace with hash -746000031, now seen corresponding path program 1 times [2022-01-10 23:49:56,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:49:56,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804555490] [2022-01-10 23:49:56,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:49:56,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:49:56,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:49:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:49:56,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:49:56,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804555490] [2022-01-10 23:49:56,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804555490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:49:56,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:49:56,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:49:56,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510265082] [2022-01-10 23:49:56,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:49:56,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:49:56,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:49:56,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:49:56,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:49:56,606 INFO L87 Difference]: Start difference. First operand 30550 states and 53178 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:00,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:00,919 INFO L93 Difference]: Finished difference Result 90710 states and 158046 transitions. [2022-01-10 23:50:00,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:50:00,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-01-10 23:50:00,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:01,034 INFO L225 Difference]: With dead ends: 90710 [2022-01-10 23:50:01,035 INFO L226 Difference]: Without dead ends: 60246 [2022-01-10 23:50:01,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:01,067 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 685 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:01,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 1466 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:50:01,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60246 states. [2022-01-10 23:50:04,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60246 to 54806. [2022-01-10 23:50:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54806 states, 54804 states have (on average 1.7620976571053208) internal successors, (96570), 54805 states have internal predecessors, (96570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:04,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54806 states to 54806 states and 96570 transitions. [2022-01-10 23:50:04,955 INFO L78 Accepts]: Start accepts. Automaton has 54806 states and 96570 transitions. Word has length 89 [2022-01-10 23:50:04,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:04,955 INFO L470 AbstractCegarLoop]: Abstraction has 54806 states and 96570 transitions. [2022-01-10 23:50:04,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:04,955 INFO L276 IsEmpty]: Start isEmpty. Operand 54806 states and 96570 transitions. [2022-01-10 23:50:05,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 23:50:05,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:05,002 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:05,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 23:50:05,002 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:05,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:05,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1797284733, now seen corresponding path program 1 times [2022-01-10 23:50:05,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:05,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280551722] [2022-01-10 23:50:05,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:05,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:05,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:05,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:05,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280551722] [2022-01-10 23:50:05,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280551722] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:05,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:05,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:50:05,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573850700] [2022-01-10 23:50:05,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:05,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:50:05,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:05,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:50:05,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:05,054 INFO L87 Difference]: Start difference. First operand 54806 states and 96570 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:11,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:11,878 INFO L93 Difference]: Finished difference Result 156054 states and 274654 transitions. [2022-01-10 23:50:11,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:50:11,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-10 23:50:11,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:12,091 INFO L225 Difference]: With dead ends: 156054 [2022-01-10 23:50:12,091 INFO L226 Difference]: Without dead ends: 101334 [2022-01-10 23:50:12,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:12,144 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 683 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:12,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 1418 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:50:12,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101334 states. [2022-01-10 23:50:18,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101334 to 95894. [2022-01-10 23:50:18,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95894 states, 95892 states have (on average 1.7692612522421056) internal successors, (169658), 95893 states have internal predecessors, (169658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:18,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95894 states to 95894 states and 169658 transitions. [2022-01-10 23:50:18,446 INFO L78 Accepts]: Start accepts. Automaton has 95894 states and 169658 transitions. Word has length 90 [2022-01-10 23:50:18,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:18,446 INFO L470 AbstractCegarLoop]: Abstraction has 95894 states and 169658 transitions. [2022-01-10 23:50:18,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:18,446 INFO L276 IsEmpty]: Start isEmpty. Operand 95894 states and 169658 transitions. [2022-01-10 23:50:18,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 23:50:18,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:18,676 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:18,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 23:50:18,676 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:50:18,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:18,677 INFO L85 PathProgramCache]: Analyzing trace with hash 787684747, now seen corresponding path program 1 times [2022-01-10 23:50:18,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:18,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172778578] [2022-01-10 23:50:18,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:18,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:18,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:18,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172778578] [2022-01-10 23:50:18,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172778578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:18,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:18,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:50:18,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138774398] [2022-01-10 23:50:18,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:18,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:50:18,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:18,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:50:18,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:18,732 INFO L87 Difference]: Start difference. First operand 95894 states and 169658 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)