/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_SUM.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:44:30,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:44:30,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:44:30,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:44:30,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:44:30,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:44:30,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:44:30,171 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:44:30,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:44:30,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:44:30,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:44:30,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:44:30,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:44:30,182 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:44:30,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:44:30,185 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:44:30,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:44:30,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:44:30,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:44:30,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:44:30,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:44:30,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:44:30,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:44:30,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:44:30,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:44:30,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:44:30,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:44:30,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:44:30,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:44:30,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:44:30,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:44:30,206 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:44:30,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:44:30,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:44:30,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:44:30,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:44:30,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:44:30,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:44:30,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:44:30,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:44:30,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:44:30,214 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 05:44:30,235 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:44:30,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:44:30,235 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:44:30,235 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:44:30,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:44:30,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:44:30,236 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:44:30,236 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:44:30,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:44:30,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:44:30,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:44:30,237 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:44:30,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:44:30,237 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:44:30,237 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:44:30,237 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:44:30,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:44:30,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:44:30,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:44:30,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:44:30,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:44:30,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:44:30,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:44:30,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:44:30,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:44:30,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:44:30,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:44:30,238 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:44:30,238 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:44:30,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:44:30,238 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:44:30,238 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:44:30,241 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:44:30,241 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:44:30,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:44:30,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:44:30,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:44:30,437 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:44:30,437 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:44:30,438 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product28.cil.c [2022-01-11 05:44:30,510 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c229c72/5d6630ce5c5749cb9314cf352cbdd657/FLAGe25e71593 [2022-01-11 05:44:30,962 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:44:30,963 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product28.cil.c [2022-01-11 05:44:30,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c229c72/5d6630ce5c5749cb9314cf352cbdd657/FLAGe25e71593 [2022-01-11 05:44:31,000 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9c229c72/5d6630ce5c5749cb9314cf352cbdd657 [2022-01-11 05:44:31,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:44:31,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:44:31,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:44:31,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:44:31,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:44:31,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:44:31" (1/1) ... [2022-01-11 05:44:31,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@351e5e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:31, skipping insertion in model container [2022-01-11 05:44:31,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:44:31" (1/1) ... [2022-01-11 05:44:31,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:44:31,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:44:31,354 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_spec4_product28.cil.c[8467,8480] [2022-01-11 05:44:31,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:44:31,588 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 05:44:31,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:44:31,622 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_spec4_product28.cil.c[8467,8480] [2022-01-11 05:44:31,672 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:44:31,679 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:44:31,702 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_spec4_product28.cil.c[8467,8480] [2022-01-11 05:44:31,746 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:44:31,776 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:44:31,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:31 WrapperNode [2022-01-11 05:44:31,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:44:31,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:44:31,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:44:31,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:44:31,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:31" (1/1) ... [2022-01-11 05:44:31,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:31" (1/1) ... [2022-01-11 05:44:31,887 INFO L137 Inliner]: procedures = 130, calls = 208, calls flagged for inlining = 121, calls inlined = 145, statements flattened = 2223 [2022-01-11 05:44:31,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:44:31,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:44:31,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:44:31,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:44:31,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:31" (1/1) ... [2022-01-11 05:44:31,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:31" (1/1) ... [2022-01-11 05:44:31,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:31" (1/1) ... [2022-01-11 05:44:31,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:31" (1/1) ... [2022-01-11 05:44:31,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:31" (1/1) ... [2022-01-11 05:44:31,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:31" (1/1) ... [2022-01-11 05:44:31,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:31" (1/1) ... [2022-01-11 05:44:31,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:44:31,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:44:31,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:44:31,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:44:31,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:31" (1/1) ... [2022-01-11 05:44:31,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:44:31,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:44:32,032 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) [2022-01-11 05:44:32,039 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 [2022-01-11 05:44:32,062 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-11 05:44:32,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:44:32,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:44:32,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:44:32,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:44:32,254 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:44:32,257 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:44:33,277 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:44:33,289 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:44:33,289 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 05:44:33,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:44:33 BoogieIcfgContainer [2022-01-11 05:44:33,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:44:33,292 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:44:33,292 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:44:33,293 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:44:33,295 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:44:33" (1/1) ... [2022-01-11 05:44:33,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:44:33 BasicIcfg [2022-01-11 05:44:33,563 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:44:33,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:44:33,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:44:33,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:44:33,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:44:31" (1/4) ... [2022-01-11 05:44:33,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cac11ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:44:33, skipping insertion in model container [2022-01-11 05:44:33,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:44:31" (2/4) ... [2022-01-11 05:44:33,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cac11ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:44:33, skipping insertion in model container [2022-01-11 05:44:33,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:44:33" (3/4) ... [2022-01-11 05:44:33,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cac11ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:44:33, skipping insertion in model container [2022-01-11 05:44:33,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:44:33" (4/4) ... [2022-01-11 05:44:33,569 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_product28.cil.cTransformedIcfg [2022-01-11 05:44:33,574 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:44:33,574 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 05:44:33,614 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:44:33,618 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 [2022-01-11 05:44:33,618 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 05:44:33,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 521 states, 518 states have (on average 1.7007722007722008) internal successors, (881), 520 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:33,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-11 05:44:33,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:33,655 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] [2022-01-11 05:44:33,656 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:33,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:33,660 INFO L85 PathProgramCache]: Analyzing trace with hash 317327906, now seen corresponding path program 1 times [2022-01-11 05:44:33,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:33,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452234708] [2022-01-11 05:44:33,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:33,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:34,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:34,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452234708] [2022-01-11 05:44:34,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452234708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:34,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:34,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:44:34,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675877230] [2022-01-11 05:44:34,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:34,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 05:44:34,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:34,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 05:44:34,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:44:34,157 INFO L87 Difference]: Start difference. First operand has 521 states, 518 states have (on average 1.7007722007722008) internal successors, (881), 520 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:34,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:34,215 INFO L93 Difference]: Finished difference Result 786 states and 1310 transitions. [2022-01-11 05:44:34,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 05:44:34,217 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-11 05:44:34,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:34,228 INFO L225 Difference]: With dead ends: 786 [2022-01-11 05:44:34,228 INFO L226 Difference]: Without dead ends: 441 [2022-01-11 05:44:34,232 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 [2022-01-11 05:44:34,234 INFO L933 BasicCegarLoop]: 875 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, 875 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 [2022-01-11 05:44:34,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:44:34,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-01-11 05:44:34,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2022-01-11 05:44:34,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.7084282460136675) internal successors, (750), 440 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) [2022-01-11 05:44:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 750 transitions. [2022-01-11 05:44:34,291 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 750 transitions. Word has length 54 [2022-01-11 05:44:34,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:34,292 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 750 transitions. [2022-01-11 05:44:34,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:34,292 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 750 transitions. [2022-01-11 05:44:34,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-11 05:44:34,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:34,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:34,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:44:34,294 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:34,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:34,294 INFO L85 PathProgramCache]: Analyzing trace with hash 90824250, now seen corresponding path program 1 times [2022-01-11 05:44:34,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:34,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589798905] [2022-01-11 05:44:34,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:34,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:34,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:34,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:34,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589798905] [2022-01-11 05:44:34,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589798905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:34,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:34,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:44:34,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089278208] [2022-01-11 05:44:34,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:34,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:44:34,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:34,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:44:34,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:44:34,508 INFO L87 Difference]: Start difference. First operand 441 states and 750 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:34,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:34,584 INFO L93 Difference]: Finished difference Result 863 states and 1472 transitions. [2022-01-11 05:44:34,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:44:34,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-11 05:44:34,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:34,588 INFO L225 Difference]: With dead ends: 863 [2022-01-11 05:44:34,588 INFO L226 Difference]: Without dead ends: 441 [2022-01-11 05:44:34,592 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 [2022-01-11 05:44:34,592 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 725 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:34,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [725 Valid, 745 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:44:34,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-01-11 05:44:34,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2022-01-11 05:44:34,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.703872437357631) internal successors, (748), 440 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:34,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 748 transitions. [2022-01-11 05:44:34,613 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 748 transitions. Word has length 55 [2022-01-11 05:44:34,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:34,613 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 748 transitions. [2022-01-11 05:44:34,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:34,613 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 748 transitions. [2022-01-11 05:44:34,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-11 05:44:34,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:34,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:34,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:44:34,615 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:34,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:34,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1913765766, now seen corresponding path program 1 times [2022-01-11 05:44:34,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:34,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786456423] [2022-01-11 05:44:34,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:34,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:34,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:34,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:34,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786456423] [2022-01-11 05:44:34,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786456423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:34,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:34,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:44:34,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067073495] [2022-01-11 05:44:34,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:34,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:44:34,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:34,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:44:34,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:44:34,748 INFO L87 Difference]: Start difference. First operand 441 states and 748 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:34,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:34,979 INFO L93 Difference]: Finished difference Result 2073 states and 3536 transitions. [2022-01-11 05:44:34,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:44:34,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-11 05:44:34,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:34,986 INFO L225 Difference]: With dead ends: 2073 [2022-01-11 05:44:34,986 INFO L226 Difference]: Without dead ends: 1656 [2022-01-11 05:44:34,988 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 [2022-01-11 05:44:34,992 INFO L933 BasicCegarLoop]: 1419 mSDtfsCounter, 3523 mSDsluCounter, 2116 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3523 SdHoareTripleChecker+Valid, 3535 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 [2022-01-11 05:44:34,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3523 Valid, 3535 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:44:34,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2022-01-11 05:44:35,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 441. [2022-01-11 05:44:35,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.7015945330296127) internal successors, (747), 440 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:35,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 747 transitions. [2022-01-11 05:44:35,027 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 747 transitions. Word has length 57 [2022-01-11 05:44:35,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:35,027 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 747 transitions. [2022-01-11 05:44:35,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:35,028 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 747 transitions. [2022-01-11 05:44:35,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-11 05:44:35,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:35,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:35,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 05:44:35,031 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:35,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:35,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1188931208, now seen corresponding path program 1 times [2022-01-11 05:44:35,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:35,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662880780] [2022-01-11 05:44:35,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:35,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:35,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:35,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662880780] [2022-01-11 05:44:35,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662880780] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:35,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:35,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:44:35,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418915538] [2022-01-11 05:44:35,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:35,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:44:35,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:35,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:44:35,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:44:35,141 INFO L87 Difference]: Start difference. First operand 441 states and 747 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:35,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:35,179 INFO L93 Difference]: Finished difference Result 867 states and 1472 transitions. [2022-01-11 05:44:35,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:44:35,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-11 05:44:35,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:35,181 INFO L225 Difference]: With dead ends: 867 [2022-01-11 05:44:35,181 INFO L226 Difference]: Without dead ends: 455 [2022-01-11 05:44:35,182 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 [2022-01-11 05:44:35,187 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 726 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 783 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 [2022-01-11 05:44:35,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [726 Valid, 783 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:44:35,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-01-11 05:44:35,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 441. [2022-01-11 05:44:35,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.6993166287015946) internal successors, (746), 440 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:35,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 746 transitions. [2022-01-11 05:44:35,214 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 746 transitions. Word has length 58 [2022-01-11 05:44:35,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:35,215 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 746 transitions. [2022-01-11 05:44:35,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:35,215 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 746 transitions. [2022-01-11 05:44:35,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 05:44:35,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:35,217 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:35,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 05:44:35,217 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:35,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:35,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1608343013, now seen corresponding path program 1 times [2022-01-11 05:44:35,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:35,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053338921] [2022-01-11 05:44:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:35,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:35,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:35,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053338921] [2022-01-11 05:44:35,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053338921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:35,330 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:35,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:44:35,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636884007] [2022-01-11 05:44:35,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:35,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:44:35,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:35,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:44:35,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:44:35,332 INFO L87 Difference]: Start difference. First operand 441 states and 746 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:35,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:35,449 INFO L93 Difference]: Finished difference Result 1257 states and 2138 transitions. [2022-01-11 05:44:35,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:44:35,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-11 05:44:35,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:35,453 INFO L225 Difference]: With dead ends: 1257 [2022-01-11 05:44:35,453 INFO L226 Difference]: Without dead ends: 850 [2022-01-11 05:44:35,454 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 [2022-01-11 05:44:35,454 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 3446 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3446 SdHoareTripleChecker+Valid, 1524 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 [2022-01-11 05:44:35,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3446 Valid, 1524 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:44:35,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-01-11 05:44:35,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 441. [2022-01-11 05:44:35,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 439 states have (on average 1.6947608200455582) internal successors, (744), 440 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:35,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 744 transitions. [2022-01-11 05:44:35,478 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 744 transitions. Word has length 59 [2022-01-11 05:44:35,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:35,482 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 744 transitions. [2022-01-11 05:44:35,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:35,482 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 744 transitions. [2022-01-11 05:44:35,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 05:44:35,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:35,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:35,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 05:44:35,483 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:35,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:35,483 INFO L85 PathProgramCache]: Analyzing trace with hash 881984376, now seen corresponding path program 1 times [2022-01-11 05:44:35,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:35,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494313343] [2022-01-11 05:44:35,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:35,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:35,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:35,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:35,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:35,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494313343] [2022-01-11 05:44:35,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494313343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:35,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:35,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:44:35,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176201157] [2022-01-11 05:44:35,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:35,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:44:35,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:35,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:44:35,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:44:35,630 INFO L87 Difference]: Start difference. First operand 441 states and 744 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:36,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:36,091 INFO L93 Difference]: Finished difference Result 1478 states and 2445 transitions. [2022-01-11 05:44:36,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 05:44:36,092 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-11 05:44:36,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:36,097 INFO L225 Difference]: With dead ends: 1478 [2022-01-11 05:44:36,097 INFO L226 Difference]: Without dead ends: 1323 [2022-01-11 05:44:36,098 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-11 05:44:36,099 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 5119 mSDsluCounter, 5206 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5119 SdHoareTripleChecker+Valid, 6092 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:36,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5119 Valid, 6092 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:44:36,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2022-01-11 05:44:36,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 810. [2022-01-11 05:44:36,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 808 states have (on average 1.7103960396039604) internal successors, (1382), 809 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:36,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1382 transitions. [2022-01-11 05:44:36,148 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1382 transitions. Word has length 61 [2022-01-11 05:44:36,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:36,149 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 1382 transitions. [2022-01-11 05:44:36,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:36,149 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1382 transitions. [2022-01-11 05:44:36,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 05:44:36,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:36,150 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] [2022-01-11 05:44:36,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 05:44:36,151 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:36,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:36,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1057918998, now seen corresponding path program 1 times [2022-01-11 05:44:36,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:36,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692545638] [2022-01-11 05:44:36,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:36,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:36,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:36,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:36,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692545638] [2022-01-11 05:44:36,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692545638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:36,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:36,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:44:36,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296965263] [2022-01-11 05:44:36,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:36,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:44:36,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:36,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:44:36,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:44:36,228 INFO L87 Difference]: Start difference. First operand 810 states and 1382 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:36,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:36,531 INFO L93 Difference]: Finished difference Result 2020 states and 3266 transitions. [2022-01-11 05:44:36,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 05:44:36,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-11 05:44:36,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:36,537 INFO L225 Difference]: With dead ends: 2020 [2022-01-11 05:44:36,538 INFO L226 Difference]: Without dead ends: 1739 [2022-01-11 05:44:36,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-11 05:44:36,547 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 1927 mSDsluCounter, 3212 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1927 SdHoareTripleChecker+Valid, 3930 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:36,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1927 Valid, 3930 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:44:36,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2022-01-11 05:44:36,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 869. [2022-01-11 05:44:36,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 867 states have (on average 1.698961937716263) internal successors, (1473), 868 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:36,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1473 transitions. [2022-01-11 05:44:36,598 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1473 transitions. Word has length 62 [2022-01-11 05:44:36,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:36,598 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1473 transitions. [2022-01-11 05:44:36,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:36,599 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1473 transitions. [2022-01-11 05:44:36,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 05:44:36,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:36,600 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] [2022-01-11 05:44:36,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 05:44:36,600 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:36,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:36,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1340765044, now seen corresponding path program 1 times [2022-01-11 05:44:36,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:36,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734711500] [2022-01-11 05:44:36,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:36,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:36,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:36,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:36,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734711500] [2022-01-11 05:44:36,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734711500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:36,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:36,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:44:36,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258488964] [2022-01-11 05:44:36,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:36,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:44:36,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:36,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:44:36,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:44:36,704 INFO L87 Difference]: Start difference. First operand 869 states and 1473 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 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) [2022-01-11 05:44:36,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:36,955 INFO L93 Difference]: Finished difference Result 2772 states and 4498 transitions. [2022-01-11 05:44:36,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:44:36,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 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 [2022-01-11 05:44:36,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:36,964 INFO L225 Difference]: With dead ends: 2772 [2022-01-11 05:44:36,965 INFO L226 Difference]: Without dead ends: 2508 [2022-01-11 05:44:36,966 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 [2022-01-11 05:44:36,968 INFO L933 BasicCegarLoop]: 749 mSDtfsCounter, 2338 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:36,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2338 Valid, 2725 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:44:36,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2508 states. [2022-01-11 05:44:37,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2508 to 1226. [2022-01-11 05:44:37,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 1224 states have (on average 1.6691176470588236) internal successors, (2043), 1225 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:37,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 2043 transitions. [2022-01-11 05:44:37,102 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 2043 transitions. Word has length 62 [2022-01-11 05:44:37,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:37,103 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 2043 transitions. [2022-01-11 05:44:37,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 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) [2022-01-11 05:44:37,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 2043 transitions. [2022-01-11 05:44:37,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 05:44:37,104 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:37,104 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] [2022-01-11 05:44:37,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 05:44:37,105 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:37,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:37,105 INFO L85 PathProgramCache]: Analyzing trace with hash -689906013, now seen corresponding path program 1 times [2022-01-11 05:44:37,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:37,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692660742] [2022-01-11 05:44:37,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:37,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:37,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:37,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:37,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692660742] [2022-01-11 05:44:37,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692660742] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:37,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:37,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:44:37,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904147657] [2022-01-11 05:44:37,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:37,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 05:44:37,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:37,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 05:44:37,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:44:37,212 INFO L87 Difference]: Start difference. First operand 1226 states and 2043 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 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) [2022-01-11 05:44:37,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:37,453 INFO L93 Difference]: Finished difference Result 2067 states and 3370 transitions. [2022-01-11 05:44:37,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 05:44:37,454 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 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 [2022-01-11 05:44:37,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:37,459 INFO L225 Difference]: With dead ends: 2067 [2022-01-11 05:44:37,459 INFO L226 Difference]: Without dead ends: 1551 [2022-01-11 05:44:37,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2022-01-11 05:44:37,463 INFO L933 BasicCegarLoop]: 741 mSDtfsCounter, 1916 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 3905 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:37,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1916 Valid, 3905 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:44:37,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2022-01-11 05:44:37,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1212. [2022-01-11 05:44:37,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1210 states have (on average 1.665289256198347) internal successors, (2015), 1211 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:37,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 2015 transitions. [2022-01-11 05:44:37,569 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 2015 transitions. Word has length 63 [2022-01-11 05:44:37,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:37,569 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 2015 transitions. [2022-01-11 05:44:37,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 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) [2022-01-11 05:44:37,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 2015 transitions. [2022-01-11 05:44:37,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 05:44:37,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:37,575 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] [2022-01-11 05:44:37,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 05:44:37,575 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:37,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:37,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1220791579, now seen corresponding path program 1 times [2022-01-11 05:44:37,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:37,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160295005] [2022-01-11 05:44:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:37,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:37,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:37,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:37,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160295005] [2022-01-11 05:44:37,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160295005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:37,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:37,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:44:37,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288593935] [2022-01-11 05:44:37,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:37,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 05:44:37,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:37,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 05:44:37,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:44:37,701 INFO L87 Difference]: Start difference. First operand 1212 states and 2015 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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) [2022-01-11 05:44:38,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:38,626 INFO L93 Difference]: Finished difference Result 4764 states and 7601 transitions. [2022-01-11 05:44:38,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-11 05:44:38,626 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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 [2022-01-11 05:44:38,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:38,640 INFO L225 Difference]: With dead ends: 4764 [2022-01-11 05:44:38,640 INFO L226 Difference]: Without dead ends: 4684 [2022-01-11 05:44:38,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2022-01-11 05:44:38,642 INFO L933 BasicCegarLoop]: 1362 mSDtfsCounter, 2660 mSDsluCounter, 5814 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2660 SdHoareTripleChecker+Valid, 7176 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:38,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2660 Valid, 7176 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:44:38,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4684 states. [2022-01-11 05:44:38,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4684 to 1792. [2022-01-11 05:44:38,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1790 states have (on average 1.6363128491620111) internal successors, (2929), 1791 states have internal predecessors, (2929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:38,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2929 transitions. [2022-01-11 05:44:38,860 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2929 transitions. Word has length 66 [2022-01-11 05:44:38,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:38,861 INFO L470 AbstractCegarLoop]: Abstraction has 1792 states and 2929 transitions. [2022-01-11 05:44:38,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 8 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) [2022-01-11 05:44:38,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2929 transitions. [2022-01-11 05:44:38,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 05:44:38,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:38,863 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] [2022-01-11 05:44:38,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 05:44:38,863 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:38,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:38,863 INFO L85 PathProgramCache]: Analyzing trace with hash -809217559, now seen corresponding path program 1 times [2022-01-11 05:44:38,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:38,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453821995] [2022-01-11 05:44:38,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:38,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:38,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:38,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453821995] [2022-01-11 05:44:38,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453821995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:38,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:38,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:44:38,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519643073] [2022-01-11 05:44:38,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:38,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 05:44:38,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:38,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 05:44:38,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:44:38,966 INFO L87 Difference]: Start difference. First operand 1792 states and 2929 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2022-01-11 05:44:39,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:39,634 INFO L93 Difference]: Finished difference Result 3715 states and 5930 transitions. [2022-01-11 05:44:39,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-11 05:44:39,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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 [2022-01-11 05:44:39,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:39,644 INFO L225 Difference]: With dead ends: 3715 [2022-01-11 05:44:39,644 INFO L226 Difference]: Without dead ends: 3461 [2022-01-11 05:44:39,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2022-01-11 05:44:39,646 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 3045 mSDsluCounter, 4313 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3045 SdHoareTripleChecker+Valid, 5027 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:39,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3045 Valid, 5027 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:44:39,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2022-01-11 05:44:39,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 1882. [2022-01-11 05:44:39,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1880 states have (on average 1.6308510638297873) internal successors, (3066), 1881 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:39,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 3066 transitions. [2022-01-11 05:44:39,811 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 3066 transitions. Word has length 67 [2022-01-11 05:44:39,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:39,812 INFO L470 AbstractCegarLoop]: Abstraction has 1882 states and 3066 transitions. [2022-01-11 05:44:39,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 8 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) [2022-01-11 05:44:39,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 3066 transitions. [2022-01-11 05:44:39,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 05:44:39,813 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:39,813 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] [2022-01-11 05:44:39,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 05:44:39,814 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:39,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:39,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1961730215, now seen corresponding path program 1 times [2022-01-11 05:44:39,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:39,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816627364] [2022-01-11 05:44:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:39,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:39,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:39,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:39,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816627364] [2022-01-11 05:44:39,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816627364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:39,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:39,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:44:39,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580759008] [2022-01-11 05:44:39,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:39,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:44:39,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:39,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:44:39,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:44:39,883 INFO L87 Difference]: Start difference. First operand 1882 states and 3066 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) [2022-01-11 05:44:40,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:40,194 INFO L93 Difference]: Finished difference Result 3244 states and 5209 transitions. [2022-01-11 05:44:40,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:44:40,195 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 [2022-01-11 05:44:40,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:40,210 INFO L225 Difference]: With dead ends: 3244 [2022-01-11 05:44:40,210 INFO L226 Difference]: Without dead ends: 2468 [2022-01-11 05:44:40,213 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 [2022-01-11 05:44:40,224 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 1609 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:40,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1609 Valid, 1797 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:44:40,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2022-01-11 05:44:40,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 1882. [2022-01-11 05:44:40,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1880 states have (on average 1.6287234042553191) internal successors, (3062), 1881 states have internal predecessors, (3062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:40,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 3062 transitions. [2022-01-11 05:44:40,400 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 3062 transitions. Word has length 67 [2022-01-11 05:44:40,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:40,400 INFO L470 AbstractCegarLoop]: Abstraction has 1882 states and 3062 transitions. [2022-01-11 05:44:40,401 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) [2022-01-11 05:44:40,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 3062 transitions. [2022-01-11 05:44:40,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 05:44:40,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:40,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:40,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 05:44:40,402 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:40,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:40,403 INFO L85 PathProgramCache]: Analyzing trace with hash 685276722, now seen corresponding path program 1 times [2022-01-11 05:44:40,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:40,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856947426] [2022-01-11 05:44:40,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:40,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:40,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:40,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:40,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856947426] [2022-01-11 05:44:40,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856947426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:40,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:40,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:44:40,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023865906] [2022-01-11 05:44:40,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:40,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:44:40,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:40,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:44:40,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:44:40,500 INFO L87 Difference]: Start difference. First operand 1882 states and 3062 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:41,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:41,397 INFO L93 Difference]: Finished difference Result 4597 states and 7216 transitions. [2022-01-11 05:44:41,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 05:44:41,397 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 05:44:41,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:41,420 INFO L225 Difference]: With dead ends: 4597 [2022-01-11 05:44:41,420 INFO L226 Difference]: Without dead ends: 3597 [2022-01-11 05:44:41,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-11 05:44:41,423 INFO L933 BasicCegarLoop]: 724 mSDtfsCounter, 1969 mSDsluCounter, 3008 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 3732 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:41,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1969 Valid, 3732 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:44:41,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3597 states. [2022-01-11 05:44:41,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3597 to 1862. [2022-01-11 05:44:41,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1860 states have (on average 1.6263440860215055) internal successors, (3025), 1861 states have internal predecessors, (3025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:41,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 3025 transitions. [2022-01-11 05:44:41,653 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 3025 transitions. Word has length 68 [2022-01-11 05:44:41,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:41,653 INFO L470 AbstractCegarLoop]: Abstraction has 1862 states and 3025 transitions. [2022-01-11 05:44:41,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:41,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 3025 transitions. [2022-01-11 05:44:41,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 05:44:41,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:41,655 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:41,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 05:44:41,655 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:41,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:41,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1889345489, now seen corresponding path program 1 times [2022-01-11 05:44:41,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:41,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951109778] [2022-01-11 05:44:41,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:41,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:41,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:41,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:41,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951109778] [2022-01-11 05:44:41,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951109778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:41,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:41,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:44:41,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824294704] [2022-01-11 05:44:41,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:41,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 05:44:41,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:41,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 05:44:41,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:44:41,808 INFO L87 Difference]: Start difference. First operand 1862 states and 3025 transitions. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:42,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:42,541 INFO L93 Difference]: Finished difference Result 3273 states and 5228 transitions. [2022-01-11 05:44:42,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-11 05:44:42,541 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 05:44:42,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:42,546 INFO L225 Difference]: With dead ends: 3273 [2022-01-11 05:44:42,546 INFO L226 Difference]: Without dead ends: 2817 [2022-01-11 05:44:42,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-01-11 05:44:42,548 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 2379 mSDsluCounter, 4301 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2379 SdHoareTripleChecker+Valid, 5019 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:42,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2379 Valid, 5019 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:44:42,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2022-01-11 05:44:42,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 1758. [2022-01-11 05:44:42,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1756 states have (on average 1.6292710706150342) internal successors, (2861), 1757 states have internal predecessors, (2861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:42,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2861 transitions. [2022-01-11 05:44:42,756 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2861 transitions. Word has length 68 [2022-01-11 05:44:42,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:42,756 INFO L470 AbstractCegarLoop]: Abstraction has 1758 states and 2861 transitions. [2022-01-11 05:44:42,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:42,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2861 transitions. [2022-01-11 05:44:42,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 05:44:42,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:42,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:42,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 05:44:42,760 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:42,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:42,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1448585546, now seen corresponding path program 1 times [2022-01-11 05:44:42,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:42,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762716172] [2022-01-11 05:44:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:42,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:42,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:42,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762716172] [2022-01-11 05:44:42,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762716172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:42,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:42,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:44:42,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183806022] [2022-01-11 05:44:42,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:42,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:44:42,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:42,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:44:42,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:44:42,842 INFO L87 Difference]: Start difference. First operand 1758 states and 2861 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:43,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:43,116 INFO L93 Difference]: Finished difference Result 2949 states and 4742 transitions. [2022-01-11 05:44:43,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:44:43,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 05:44:43,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:43,120 INFO L225 Difference]: With dead ends: 2949 [2022-01-11 05:44:43,120 INFO L226 Difference]: Without dead ends: 2175 [2022-01-11 05:44:43,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:44:43,122 INFO L933 BasicCegarLoop]: 947 mSDtfsCounter, 579 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:43,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [579 Valid, 2462 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:44:43,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2022-01-11 05:44:43,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 1464. [2022-01-11 05:44:43,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 1.6288448393711552) internal successors, (2383), 1463 states have internal predecessors, (2383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:43,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2383 transitions. [2022-01-11 05:44:43,287 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2383 transitions. Word has length 68 [2022-01-11 05:44:43,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:43,287 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 2383 transitions. [2022-01-11 05:44:43,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2383 transitions. [2022-01-11 05:44:43,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-11 05:44:43,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:43,290 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:43,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 05:44:43,290 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:43,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:43,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1412705161, now seen corresponding path program 1 times [2022-01-11 05:44:43,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:43,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365693839] [2022-01-11 05:44:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:43,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:43,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:43,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365693839] [2022-01-11 05:44:43,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365693839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:43,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:43,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:44:43,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758732956] [2022-01-11 05:44:43,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:43,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:44:43,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:43,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:44:43,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:44:43,366 INFO L87 Difference]: Start difference. First operand 1464 states and 2383 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:43,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:43,522 INFO L93 Difference]: Finished difference Result 2018 states and 3258 transitions. [2022-01-11 05:44:43,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:44:43,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-11 05:44:43,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:43,525 INFO L225 Difference]: With dead ends: 2018 [2022-01-11 05:44:43,525 INFO L226 Difference]: Without dead ends: 1464 [2022-01-11 05:44:43,526 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 [2022-01-11 05:44:43,527 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 573 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:43,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 1614 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:44:43,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1464 states. [2022-01-11 05:44:43,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1464 to 1464. [2022-01-11 05:44:43,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 1.6281613123718386) internal successors, (2382), 1463 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:43,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 2382 transitions. [2022-01-11 05:44:43,685 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 2382 transitions. Word has length 107 [2022-01-11 05:44:43,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:43,685 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 2382 transitions. [2022-01-11 05:44:43,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:43,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 2382 transitions. [2022-01-11 05:44:43,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-11 05:44:43,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:43,687 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:43,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 05:44:43,688 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:43,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:43,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1928033240, now seen corresponding path program 1 times [2022-01-11 05:44:43,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:43,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426754514] [2022-01-11 05:44:43,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:43,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:43,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:43,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426754514] [2022-01-11 05:44:43,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426754514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:43,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:43,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:44:43,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869888663] [2022-01-11 05:44:43,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:43,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:44:43,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:43,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:44:43,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:44:43,849 INFO L87 Difference]: Start difference. First operand 1464 states and 2382 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:44,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:44,447 INFO L93 Difference]: Finished difference Result 4089 states and 6496 transitions. [2022-01-11 05:44:44,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:44:44,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-11 05:44:44,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:44,453 INFO L225 Difference]: With dead ends: 4089 [2022-01-11 05:44:44,453 INFO L226 Difference]: Without dead ends: 3392 [2022-01-11 05:44:44,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:44:44,454 INFO L933 BasicCegarLoop]: 1245 mSDtfsCounter, 1375 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 3817 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:44,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1375 Valid, 3817 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:44:44,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3392 states. [2022-01-11 05:44:44,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3392 to 1610. [2022-01-11 05:44:44,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1610 states, 1609 states have (on average 1.6121814791796147) internal successors, (2594), 1609 states have internal predecessors, (2594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:44,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 2594 transitions. [2022-01-11 05:44:44,611 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 2594 transitions. Word has length 107 [2022-01-11 05:44:44,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:44,611 INFO L470 AbstractCegarLoop]: Abstraction has 1610 states and 2594 transitions. [2022-01-11 05:44:44,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:44,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 2594 transitions. [2022-01-11 05:44:44,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-11 05:44:44,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:44,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:44,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 05:44:44,614 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:44,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:44,615 INFO L85 PathProgramCache]: Analyzing trace with hash -169234573, now seen corresponding path program 1 times [2022-01-11 05:44:44,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:44,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716845285] [2022-01-11 05:44:44,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:44,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:44,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:44,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:44,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716845285] [2022-01-11 05:44:44,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716845285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:44,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:44,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:44:44,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078990329] [2022-01-11 05:44:44,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:44,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:44:44,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:44,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:44:44,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:44:44,710 INFO L87 Difference]: Start difference. First operand 1610 states and 2594 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:45,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:45,762 INFO L93 Difference]: Finished difference Result 8435 states and 13490 transitions. [2022-01-11 05:44:45,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:44:45,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-11 05:44:45,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:45,774 INFO L225 Difference]: With dead ends: 8435 [2022-01-11 05:44:45,774 INFO L226 Difference]: Without dead ends: 7852 [2022-01-11 05:44:45,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:44:45,776 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 3830 mSDsluCounter, 3753 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3830 SdHoareTripleChecker+Valid, 4619 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:45,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3830 Valid, 4619 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:44:45,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7852 states. [2022-01-11 05:44:46,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7852 to 2485. [2022-01-11 05:44:46,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2484 states have (on average 1.6272141706924315) internal successors, (4042), 2484 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:46,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 4042 transitions. [2022-01-11 05:44:46,018 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 4042 transitions. Word has length 108 [2022-01-11 05:44:46,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:46,018 INFO L470 AbstractCegarLoop]: Abstraction has 2485 states and 4042 transitions. [2022-01-11 05:44:46,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:46,018 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 4042 transitions. [2022-01-11 05:44:46,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-11 05:44:46,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:46,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:46,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 05:44:46,023 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:46,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:46,023 INFO L85 PathProgramCache]: Analyzing trace with hash -840673334, now seen corresponding path program 1 times [2022-01-11 05:44:46,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:46,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259916197] [2022-01-11 05:44:46,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:46,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:46,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:46,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:46,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259916197] [2022-01-11 05:44:46,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259916197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:46,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:46,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:44:46,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310501773] [2022-01-11 05:44:46,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:46,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:44:46,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:46,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:44:46,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:44:46,117 INFO L87 Difference]: Start difference. First operand 2485 states and 4042 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:47,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:47,245 INFO L93 Difference]: Finished difference Result 7435 states and 11935 transitions. [2022-01-11 05:44:47,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:44:47,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-01-11 05:44:47,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:47,262 INFO L225 Difference]: With dead ends: 7435 [2022-01-11 05:44:47,262 INFO L226 Difference]: Without dead ends: 7024 [2022-01-11 05:44:47,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:44:47,266 INFO L933 BasicCegarLoop]: 1271 mSDtfsCounter, 3317 mSDsluCounter, 4400 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3317 SdHoareTripleChecker+Valid, 5671 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:47,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3317 Valid, 5671 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:44:47,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7024 states. [2022-01-11 05:44:47,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7024 to 2622. [2022-01-11 05:44:47,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2622 states, 2621 states have (on average 1.6222815719191148) internal successors, (4252), 2621 states have internal predecessors, (4252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:47,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 4252 transitions. [2022-01-11 05:44:47,568 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 4252 transitions. Word has length 109 [2022-01-11 05:44:47,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:47,568 INFO L470 AbstractCegarLoop]: Abstraction has 2622 states and 4252 transitions. [2022-01-11 05:44:47,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:47,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 4252 transitions. [2022-01-11 05:44:47,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-11 05:44:47,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:47,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:47,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 05:44:47,574 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:47,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:47,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1387410409, now seen corresponding path program 1 times [2022-01-11 05:44:47,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:47,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292311928] [2022-01-11 05:44:47,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:47,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:47,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:47,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:47,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292311928] [2022-01-11 05:44:47,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292311928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:47,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:47,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:44:47,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410034276] [2022-01-11 05:44:47,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:47,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:44:47,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:47,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:44:47,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:44:47,653 INFO L87 Difference]: Start difference. First operand 2622 states and 4252 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:48,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:48,242 INFO L93 Difference]: Finished difference Result 7717 states and 12541 transitions. [2022-01-11 05:44:48,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:44:48,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-01-11 05:44:48,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:48,251 INFO L225 Difference]: With dead ends: 7717 [2022-01-11 05:44:48,251 INFO L226 Difference]: Without dead ends: 5132 [2022-01-11 05:44:48,254 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 [2022-01-11 05:44:48,255 INFO L933 BasicCegarLoop]: 1367 mSDtfsCounter, 2133 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2133 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:48,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2133 Valid, 2052 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:44:48,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5132 states. [2022-01-11 05:44:48,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5132 to 2622. [2022-01-11 05:44:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2622 states, 2621 states have (on average 1.6215185043876383) internal successors, (4250), 2621 states have internal predecessors, (4250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:48,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 4250 transitions. [2022-01-11 05:44:48,536 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 4250 transitions. Word has length 109 [2022-01-11 05:44:48,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:48,537 INFO L470 AbstractCegarLoop]: Abstraction has 2622 states and 4250 transitions. [2022-01-11 05:44:48,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:48,537 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 4250 transitions. [2022-01-11 05:44:48,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 05:44:48,541 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:48,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:48,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 05:44:48,541 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:48,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:48,541 INFO L85 PathProgramCache]: Analyzing trace with hash 165879095, now seen corresponding path program 1 times [2022-01-11 05:44:48,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:48,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012525647] [2022-01-11 05:44:48,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:48,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:48,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:48,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012525647] [2022-01-11 05:44:48,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012525647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:48,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:48,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:44:48,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038744046] [2022-01-11 05:44:48,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:48,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:44:48,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:48,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:44:48,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:44:48,641 INFO L87 Difference]: Start difference. First operand 2622 states and 4250 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:49,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:49,849 INFO L93 Difference]: Finished difference Result 7356 states and 11518 transitions. [2022-01-11 05:44:49,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:44:49,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 05:44:49,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:49,858 INFO L225 Difference]: With dead ends: 7356 [2022-01-11 05:44:49,858 INFO L226 Difference]: Without dead ends: 6717 [2022-01-11 05:44:49,860 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 [2022-01-11 05:44:49,861 INFO L933 BasicCegarLoop]: 734 mSDtfsCounter, 1644 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 2884 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:49,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1644 Valid, 2884 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:44:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6717 states. [2022-01-11 05:44:50,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6717 to 3202. [2022-01-11 05:44:50,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3202 states, 3201 states have (on average 1.5976257419556388) internal successors, (5114), 3201 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3202 states to 3202 states and 5114 transitions. [2022-01-11 05:44:50,239 INFO L78 Accepts]: Start accepts. Automaton has 3202 states and 5114 transitions. Word has length 110 [2022-01-11 05:44:50,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:50,239 INFO L470 AbstractCegarLoop]: Abstraction has 3202 states and 5114 transitions. [2022-01-11 05:44:50,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:50,239 INFO L276 IsEmpty]: Start isEmpty. Operand 3202 states and 5114 transitions. [2022-01-11 05:44:50,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-11 05:44:50,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:50,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:50,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 05:44:50,244 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:50,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:50,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1918009689, now seen corresponding path program 1 times [2022-01-11 05:44:50,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:50,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144664543] [2022-01-11 05:44:50,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:50,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:50,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:50,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144664543] [2022-01-11 05:44:50,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144664543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:50,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:50,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:44:50,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147742753] [2022-01-11 05:44:50,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:50,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:44:50,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:50,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:44:50,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:44:50,322 INFO L87 Difference]: Start difference. First operand 3202 states and 5114 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:50,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:50,928 INFO L93 Difference]: Finished difference Result 4623 states and 7196 transitions. [2022-01-11 05:44:50,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 05:44:50,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-01-11 05:44:50,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:50,934 INFO L225 Difference]: With dead ends: 4623 [2022-01-11 05:44:50,934 INFO L226 Difference]: Without dead ends: 4232 [2022-01-11 05:44:50,935 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 [2022-01-11 05:44:50,935 INFO L933 BasicCegarLoop]: 824 mSDtfsCounter, 598 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 598 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:50,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [598 Valid, 3146 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:44:50,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4232 states. [2022-01-11 05:44:51,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4232 to 3218. [2022-01-11 05:44:51,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 3217 states have (on average 1.5946534037923532) internal successors, (5130), 3217 states have internal predecessors, (5130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:51,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 5130 transitions. [2022-01-11 05:44:51,352 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 5130 transitions. Word has length 111 [2022-01-11 05:44:51,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:51,352 INFO L470 AbstractCegarLoop]: Abstraction has 3218 states and 5130 transitions. [2022-01-11 05:44:51,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:51,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 5130 transitions. [2022-01-11 05:44:51,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-11 05:44:51,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:51,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:51,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 05:44:51,363 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:51,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:51,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1111812601, now seen corresponding path program 1 times [2022-01-11 05:44:51,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:51,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775862222] [2022-01-11 05:44:51,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:51,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:51,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:51,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:51,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775862222] [2022-01-11 05:44:51,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775862222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:51,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:51,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-11 05:44:51,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133990663] [2022-01-11 05:44:51,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:51,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 05:44:51,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:51,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 05:44:51,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-11 05:44:51,478 INFO L87 Difference]: Start difference. First operand 3218 states and 5130 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:51,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:51,991 INFO L93 Difference]: Finished difference Result 4209 states and 6656 transitions. [2022-01-11 05:44:51,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-11 05:44:51,992 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-01-11 05:44:51,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:51,996 INFO L225 Difference]: With dead ends: 4209 [2022-01-11 05:44:51,996 INFO L226 Difference]: Without dead ends: 3234 [2022-01-11 05:44:51,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2022-01-11 05:44:51,998 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 1706 mSDsluCounter, 4032 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 4738 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:51,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1706 Valid, 4738 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:44:52,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3234 states. [2022-01-11 05:44:52,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3234 to 3218. [2022-01-11 05:44:52,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3218 states, 3217 states have (on average 1.5871930369909855) internal successors, (5106), 3217 states have internal predecessors, (5106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:52,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 5106 transitions. [2022-01-11 05:44:52,406 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 5106 transitions. Word has length 111 [2022-01-11 05:44:52,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:52,407 INFO L470 AbstractCegarLoop]: Abstraction has 3218 states and 5106 transitions. [2022-01-11 05:44:52,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 10 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:52,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 5106 transitions. [2022-01-11 05:44:52,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-11 05:44:52,411 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:52,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:52,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 05:44:52,411 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:52,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:52,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1113793047, now seen corresponding path program 1 times [2022-01-11 05:44:52,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:52,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167354474] [2022-01-11 05:44:52,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:52,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:52,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:52,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:52,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167354474] [2022-01-11 05:44:52,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167354474] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:52,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:52,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:44:52,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613100672] [2022-01-11 05:44:52,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:52,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:44:52,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:52,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:44:52,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:44:52,514 INFO L87 Difference]: Start difference. First operand 3218 states and 5106 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:53,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:53,662 INFO L93 Difference]: Finished difference Result 7814 states and 11893 transitions. [2022-01-11 05:44:53,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:44:53,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-01-11 05:44:53,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:53,669 INFO L225 Difference]: With dead ends: 7814 [2022-01-11 05:44:53,669 INFO L226 Difference]: Without dead ends: 5893 [2022-01-11 05:44:53,672 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 [2022-01-11 05:44:53,673 INFO L933 BasicCegarLoop]: 838 mSDtfsCounter, 478 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:53,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 2338 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:44:53,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5893 states. [2022-01-11 05:44:54,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5893 to 3264. [2022-01-11 05:44:54,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3264 states, 3263 states have (on average 1.5789151087955868) internal successors, (5152), 3263 states have internal predecessors, (5152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:54,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3264 states to 3264 states and 5152 transitions. [2022-01-11 05:44:54,156 INFO L78 Accepts]: Start accepts. Automaton has 3264 states and 5152 transitions. Word has length 114 [2022-01-11 05:44:54,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:54,157 INFO L470 AbstractCegarLoop]: Abstraction has 3264 states and 5152 transitions. [2022-01-11 05:44:54,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:54,157 INFO L276 IsEmpty]: Start isEmpty. Operand 3264 states and 5152 transitions. [2022-01-11 05:44:54,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-11 05:44:54,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:44:54,161 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:44:54,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 05:44:54,161 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:44:54,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:44:54,162 INFO L85 PathProgramCache]: Analyzing trace with hash 339154142, now seen corresponding path program 1 times [2022-01-11 05:44:54,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:44:54,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403965860] [2022-01-11 05:44:54,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:44:54,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:44:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:44:54,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:44:54,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:44:54,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403965860] [2022-01-11 05:44:54,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403965860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:44:54,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:44:54,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:44:54,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984930668] [2022-01-11 05:44:54,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:44:54,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:44:54,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:44:54,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:44:54,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:44:54,280 INFO L87 Difference]: Start difference. First operand 3264 states and 5152 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:54,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:44:54,679 INFO L93 Difference]: Finished difference Result 3264 states and 5152 transitions. [2022-01-11 05:44:54,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:44:54,679 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-01-11 05:44:54,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:44:54,680 INFO L225 Difference]: With dead ends: 3264 [2022-01-11 05:44:54,680 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 05:44:54,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:44:54,682 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 558 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:44:54,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [558 Valid, 1919 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:44:54,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 05:44:54,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 05:44:54,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:54,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 05:44:54,683 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 114 [2022-01-11 05:44:54,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:44:54,683 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 05:44:54,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:44:54,683 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 05:44:54,684 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 05:44:54,685 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-11 05:44:54,686 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-11 05:44:54,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 05:44:54,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-11 05:45:37,637 WARN L228 SmtUtils]: Spent 42.90s on a formula simplification that was a NOOP. DAG size: 341 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)