/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_spec27_product13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:41:04,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:41:04,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:41:04,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:41:04,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:41:04,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:41:04,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:41:04,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:41:04,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:41:04,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:41:04,180 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:41:04,182 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:41:04,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:41:04,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:41:04,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:41:04,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:41:04,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:41:04,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:41:04,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:41:04,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:41:04,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:41:04,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:41:04,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:41:04,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:41:04,208 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:41:04,208 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:41:04,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:41:04,209 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:41:04,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:41:04,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:41:04,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:41:04,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:41:04,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:41:04,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:41:04,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:41:04,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:41:04,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:41:04,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:41:04,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:41:04,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:41:04,215 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:41:04,220 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 05:41:04,240 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:41:04,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:41:04,240 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:41:04,240 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:41:04,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:41:04,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:41:04,241 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:41:04,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:41:04,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:41:04,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:41:04,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:41:04,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:41:04,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:41:04,242 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:41:04,242 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:41:04,243 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:41:04,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:41:04,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:41:04,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:41:04,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:41:04,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:41:04,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:41:04,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:41:04,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:41:04,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:41:04,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:41:04,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:41:04,244 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:41:04,244 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:41:04,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:41:04,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:41:04,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:41:04,245 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:41:04,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:41:04,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:41:04,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:41:04,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:41:04,482 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:41:04,482 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:41:04,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product13.cil.c [2022-01-11 05:41:04,532 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f13810c8/1c5ee8699539437bb79c1053c20a4efe/FLAG0122fc730 [2022-01-11 05:41:04,946 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:41:04,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product13.cil.c [2022-01-11 05:41:04,963 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f13810c8/1c5ee8699539437bb79c1053c20a4efe/FLAG0122fc730 [2022-01-11 05:41:05,283 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f13810c8/1c5ee8699539437bb79c1053c20a4efe [2022-01-11 05:41:05,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:41:05,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:41:05,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:41:05,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:41:05,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:41:05,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:41:05" (1/1) ... [2022-01-11 05:41:05,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47070d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:05, skipping insertion in model container [2022-01-11 05:41:05,314 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:41:05" (1/1) ... [2022-01-11 05:41:05,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:41:05,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:41:05,819 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product13.cil.c[61687,61700] [2022-01-11 05:41:05,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:41:05,833 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 05:41:05,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:41:05,949 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product13.cil.c[61687,61700] [2022-01-11 05:41:05,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:41:05,955 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:41:06,045 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product13.cil.c[61687,61700] [2022-01-11 05:41:06,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:41:06,084 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:41:06,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:06 WrapperNode [2022-01-11 05:41:06,085 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:41:06,086 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:41:06,086 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:41:06,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:41:06,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:06" (1/1) ... [2022-01-11 05:41:06,126 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:06" (1/1) ... [2022-01-11 05:41:06,193 INFO L137 Inliner]: procedures = 126, calls = 190, calls flagged for inlining = 105, calls inlined = 119, statements flattened = 1847 [2022-01-11 05:41:06,194 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:41:06,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:41:06,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:41:06,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:41:06,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:06" (1/1) ... [2022-01-11 05:41:06,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:06" (1/1) ... [2022-01-11 05:41:06,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:06" (1/1) ... [2022-01-11 05:41:06,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:06" (1/1) ... [2022-01-11 05:41:06,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:06" (1/1) ... [2022-01-11 05:41:06,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:06" (1/1) ... [2022-01-11 05:41:06,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:06" (1/1) ... [2022-01-11 05:41:06,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:41:06,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:41:06,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:41:06,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:41:06,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:06" (1/1) ... [2022-01-11 05:41:06,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:41:06,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:41:06,348 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 05:41:06,372 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 05:41:06,387 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-11 05:41:06,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:41:06,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:41:06,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:41:06,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:41:06,603 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:41:06,604 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:41:07,636 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:41:07,645 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:41:07,645 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 05:41:07,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:41:07 BoogieIcfgContainer [2022-01-11 05:41:07,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:41:07,652 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:41:07,652 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:41:07,653 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:41:07,656 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:41:07" (1/1) ... [2022-01-11 05:41:07,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:41:07 BasicIcfg [2022-01-11 05:41:07,930 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:41:07,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:41:07,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:41:07,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:41:07,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:41:05" (1/4) ... [2022-01-11 05:41:07,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179386d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:41:07, skipping insertion in model container [2022-01-11 05:41:07,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:41:06" (2/4) ... [2022-01-11 05:41:07,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179386d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:41:07, skipping insertion in model container [2022-01-11 05:41:07,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:41:07" (3/4) ... [2022-01-11 05:41:07,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179386d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:41:07, skipping insertion in model container [2022-01-11 05:41:07,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:41:07" (4/4) ... [2022-01-11 05:41:07,938 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product13.cil.cTransformedIcfg [2022-01-11 05:41:07,942 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:41:07,943 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 05:41:07,990 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:41:07,995 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 05:41:07,996 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 05:41:08,012 INFO L276 IsEmpty]: Start isEmpty. Operand has 437 states, 434 states have (on average 1.7119815668202765) internal successors, (743), 436 states have internal predecessors, (743), 0 states have call successors, (0), 0 states 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 05:41:08,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-11 05:41:08,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:08,022 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] [2022-01-11 05:41:08,023 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:08,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:08,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1048608734, now seen corresponding path program 1 times [2022-01-11 05:41:08,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:08,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113467926] [2022-01-11 05:41:08,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:08,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:08,394 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 05:41:08,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:08,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113467926] [2022-01-11 05:41:08,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113467926] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:08,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:08,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:41:08,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172755138] [2022-01-11 05:41:08,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:08,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 05:41:08,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:08,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 05:41:08,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:41:08,424 INFO L87 Difference]: Start difference. First operand has 437 states, 434 states have (on average 1.7119815668202765) internal successors, (743), 436 states have internal predecessors, (743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:08,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:08,475 INFO L93 Difference]: Finished difference Result 618 states and 1034 transitions. [2022-01-11 05:41:08,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 05:41:08,477 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-11 05:41:08,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:08,488 INFO L225 Difference]: With dead ends: 618 [2022-01-11 05:41:08,488 INFO L226 Difference]: Without dead ends: 422 [2022-01-11 05:41:08,491 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 05:41:08,494 INFO L933 BasicCegarLoop]: 737 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, 737 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 05:41:08,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 737 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:08,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-01-11 05:41:08,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2022-01-11 05:41:08,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 420 states have (on average 1.7166666666666666) internal successors, (721), 421 states have internal predecessors, (721), 0 states have call successors, (0), 0 states 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 05:41:08,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 721 transitions. [2022-01-11 05:41:08,586 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 721 transitions. Word has length 55 [2022-01-11 05:41:08,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:08,586 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 721 transitions. [2022-01-11 05:41:08,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:08,587 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 721 transitions. [2022-01-11 05:41:08,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-11 05:41:08,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:08,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:08,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:41:08,590 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:08,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:08,601 INFO L85 PathProgramCache]: Analyzing trace with hash -43484964, now seen corresponding path program 1 times [2022-01-11 05:41:08,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:08,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203815189] [2022-01-11 05:41:08,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:08,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:08,844 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 05:41:08,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:08,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203815189] [2022-01-11 05:41:08,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203815189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:08,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:08,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:41:08,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38703036] [2022-01-11 05:41:08,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:08,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:41:08,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:08,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:41:08,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:41:08,852 INFO L87 Difference]: Start difference. First operand 422 states and 721 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:08,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:08,951 INFO L93 Difference]: Finished difference Result 825 states and 1414 transitions. [2022-01-11 05:41:08,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:41:08,952 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-11 05:41:08,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:08,958 INFO L225 Difference]: With dead ends: 825 [2022-01-11 05:41:08,958 INFO L226 Difference]: Without dead ends: 422 [2022-01-11 05:41:08,963 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 05:41:08,965 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 696 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:08,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 716 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:08,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-01-11 05:41:09,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 422. [2022-01-11 05:41:09,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 420 states have (on average 1.7119047619047618) internal successors, (719), 421 states have internal predecessors, (719), 0 states have call successors, (0), 0 states 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 05:41:09,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 719 transitions. [2022-01-11 05:41:09,014 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 719 transitions. Word has length 56 [2022-01-11 05:41:09,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:09,016 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 719 transitions. [2022-01-11 05:41:09,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:09,019 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 719 transitions. [2022-01-11 05:41:09,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-11 05:41:09,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:09,028 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 05:41:09,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:41:09,029 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:09,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:09,029 INFO L85 PathProgramCache]: Analyzing trace with hash 217019356, now seen corresponding path program 1 times [2022-01-11 05:41:09,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:09,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135924317] [2022-01-11 05:41:09,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:09,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:09,194 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 05:41:09,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:09,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135924317] [2022-01-11 05:41:09,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135924317] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:09,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:09,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:41:09,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856796692] [2022-01-11 05:41:09,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:09,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:09,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:09,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:09,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:09,197 INFO L87 Difference]: Start difference. First operand 422 states and 719 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:09,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:09,465 INFO L93 Difference]: Finished difference Result 1978 states and 3391 transitions. [2022-01-11 05:41:09,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:41:09,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-11 05:41:09,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:09,473 INFO L225 Difference]: With dead ends: 1978 [2022-01-11 05:41:09,473 INFO L226 Difference]: Without dead ends: 1580 [2022-01-11 05:41:09,474 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 05:41:09,475 INFO L933 BasicCegarLoop]: 1361 mSDtfsCounter, 3378 mSDsluCounter, 2029 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3378 SdHoareTripleChecker+Valid, 3390 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 05:41:09,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3378 Valid, 3390 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:09,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2022-01-11 05:41:09,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 422. [2022-01-11 05:41:09,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 420 states have (on average 1.7095238095238094) internal successors, (718), 421 states have internal predecessors, (718), 0 states have call successors, (0), 0 states 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 05:41:09,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 718 transitions. [2022-01-11 05:41:09,506 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 718 transitions. Word has length 58 [2022-01-11 05:41:09,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:09,506 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 718 transitions. [2022-01-11 05:41:09,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:09,507 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 718 transitions. [2022-01-11 05:41:09,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 05:41:09,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:09,508 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 05:41:09,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 05:41:09,509 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:09,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:09,509 INFO L85 PathProgramCache]: Analyzing trace with hash 520963512, now seen corresponding path program 1 times [2022-01-11 05:41:09,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:09,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939956351] [2022-01-11 05:41:09,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:09,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:09,598 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 05:41:09,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:09,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939956351] [2022-01-11 05:41:09,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939956351] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:09,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:09,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:41:09,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92090527] [2022-01-11 05:41:09,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:09,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:41:09,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:09,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:41:09,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:41:09,600 INFO L87 Difference]: Start difference. First operand 422 states and 718 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:09,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:09,644 INFO L93 Difference]: Finished difference Result 829 states and 1414 transitions. [2022-01-11 05:41:09,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:41:09,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-11 05:41:09,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:09,647 INFO L225 Difference]: With dead ends: 829 [2022-01-11 05:41:09,647 INFO L226 Difference]: Without dead ends: 436 [2022-01-11 05:41:09,648 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 05:41:09,649 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 697 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 754 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 05:41:09,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [697 Valid, 754 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:09,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-01-11 05:41:09,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 422. [2022-01-11 05:41:09,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 420 states have (on average 1.707142857142857) internal successors, (717), 421 states have internal predecessors, (717), 0 states have call successors, (0), 0 states 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 05:41:09,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 717 transitions. [2022-01-11 05:41:09,671 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 717 transitions. Word has length 59 [2022-01-11 05:41:09,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:09,672 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 717 transitions. [2022-01-11 05:41:09,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:09,672 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 717 transitions. [2022-01-11 05:41:09,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-11 05:41:09,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:09,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:09,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 05:41:09,674 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:09,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:09,674 INFO L85 PathProgramCache]: Analyzing trace with hash -447345765, now seen corresponding path program 1 times [2022-01-11 05:41:09,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:09,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868763182] [2022-01-11 05:41:09,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:09,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:09,761 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 05:41:09,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:09,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868763182] [2022-01-11 05:41:09,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868763182] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:09,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:09,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:41:09,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194774357] [2022-01-11 05:41:09,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:09,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:09,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:09,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:09,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:09,763 INFO L87 Difference]: Start difference. First operand 422 states and 717 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:09,943 INFO L93 Difference]: Finished difference Result 1200 states and 2051 transitions. [2022-01-11 05:41:09,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:41:09,944 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-11 05:41:09,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:09,947 INFO L225 Difference]: With dead ends: 1200 [2022-01-11 05:41:09,947 INFO L226 Difference]: Without dead ends: 812 [2022-01-11 05:41:09,948 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 05:41:09,951 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 3301 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3301 SdHoareTripleChecker+Valid, 1466 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 05:41:09,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3301 Valid, 1466 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:09,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-01-11 05:41:09,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 422. [2022-01-11 05:41:09,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 420 states have (on average 1.7023809523809523) internal successors, (715), 421 states have internal predecessors, (715), 0 states have call successors, (0), 0 states 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 05:41:09,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 715 transitions. [2022-01-11 05:41:09,988 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 715 transitions. Word has length 60 [2022-01-11 05:41:09,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:09,989 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 715 transitions. [2022-01-11 05:41:09,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:09,989 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 715 transitions. [2022-01-11 05:41:09,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-11 05:41:09,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:09,990 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 05:41:09,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 05:41:09,990 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:09,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:09,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1169863906, now seen corresponding path program 1 times [2022-01-11 05:41:09,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:09,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285248250] [2022-01-11 05:41:09,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:09,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:10,120 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 05:41:10,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:10,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285248250] [2022-01-11 05:41:10,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285248250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:10,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:10,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:41:10,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262825227] [2022-01-11 05:41:10,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:10,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:41:10,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:10,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:41:10,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:41:10,122 INFO L87 Difference]: Start difference. First operand 422 states and 715 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 05:41:10,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:10,432 INFO L93 Difference]: Finished difference Result 2023 states and 3433 transitions. [2022-01-11 05:41:10,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:41:10,432 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 05:41:10,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:10,440 INFO L225 Difference]: With dead ends: 2023 [2022-01-11 05:41:10,440 INFO L226 Difference]: Without dead ends: 1874 [2022-01-11 05:41:10,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 05:41:10,444 INFO L933 BasicCegarLoop]: 1027 mSDtfsCounter, 3601 mSDsluCounter, 3826 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3601 SdHoareTripleChecker+Valid, 4853 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:10,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3601 Valid, 4853 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:10,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2022-01-11 05:41:10,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 759. [2022-01-11 05:41:10,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 757 states have (on average 1.7054161162483488) internal successors, (1291), 758 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states 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 05:41:10,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1291 transitions. [2022-01-11 05:41:10,549 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1291 transitions. Word has length 62 [2022-01-11 05:41:10,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:10,551 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 1291 transitions. [2022-01-11 05:41:10,551 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 05:41:10,551 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1291 transitions. [2022-01-11 05:41:10,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 05:41:10,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:10,553 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 05:41:10,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 05:41:10,554 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:10,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:10,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1922581720, now seen corresponding path program 1 times [2022-01-11 05:41:10,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:10,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896539417] [2022-01-11 05:41:10,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:10,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:10,709 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 05:41:10,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:10,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896539417] [2022-01-11 05:41:10,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896539417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:10,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:10,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:41:10,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270905623] [2022-01-11 05:41:10,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:10,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:41:10,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:10,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:41:10,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:41:10,712 INFO L87 Difference]: Start difference. First operand 759 states and 1291 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:11,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:11,106 INFO L93 Difference]: Finished difference Result 3509 states and 5983 transitions. [2022-01-11 05:41:11,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:41:11,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-11 05:41:11,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:11,119 INFO L225 Difference]: With dead ends: 3509 [2022-01-11 05:41:11,119 INFO L226 Difference]: Without dead ends: 3284 [2022-01-11 05:41:11,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 05:41:11,123 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 3611 mSDsluCounter, 2995 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3611 SdHoareTripleChecker+Valid, 3941 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:11,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3611 Valid, 3941 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:11,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2022-01-11 05:41:11,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 1410. [2022-01-11 05:41:11,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1408 states have (on average 1.7137784090909092) internal successors, (2413), 1409 states have internal predecessors, (2413), 0 states have call successors, (0), 0 states 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 05:41:11,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 2413 transitions. [2022-01-11 05:41:11,234 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 2413 transitions. Word has length 63 [2022-01-11 05:41:11,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:11,235 INFO L470 AbstractCegarLoop]: Abstraction has 1410 states and 2413 transitions. [2022-01-11 05:41:11,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:11,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 2413 transitions. [2022-01-11 05:41:11,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 05:41:11,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:11,238 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 05:41:11,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 05:41:11,238 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:11,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:11,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2136334142, now seen corresponding path program 1 times [2022-01-11 05:41:11,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:11,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667352308] [2022-01-11 05:41:11,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:11,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:11,320 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 05:41:11,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:11,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667352308] [2022-01-11 05:41:11,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667352308] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:11,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:11,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:41:11,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654756862] [2022-01-11 05:41:11,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:11,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:11,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:11,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:11,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:11,323 INFO L87 Difference]: Start difference. First operand 1410 states and 2413 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:11,599 INFO L93 Difference]: Finished difference Result 4042 states and 6979 transitions. [2022-01-11 05:41:11,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:41:11,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-11 05:41:11,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:11,610 INFO L225 Difference]: With dead ends: 4042 [2022-01-11 05:41:11,610 INFO L226 Difference]: Without dead ends: 2682 [2022-01-11 05:41:11,614 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 05:41:11,615 INFO L933 BasicCegarLoop]: 1333 mSDtfsCounter, 2082 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2082 SdHoareTripleChecker+Valid, 2001 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 05:41:11,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2082 Valid, 2001 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:11,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2682 states. [2022-01-11 05:41:11,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2682 to 1410. [2022-01-11 05:41:11,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1408 states have (on average 1.7123579545454546) internal successors, (2411), 1409 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states 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 05:41:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 2411 transitions. [2022-01-11 05:41:11,723 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 2411 transitions. Word has length 63 [2022-01-11 05:41:11,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:11,723 INFO L470 AbstractCegarLoop]: Abstraction has 1410 states and 2411 transitions. [2022-01-11 05:41:11,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:11,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 2411 transitions. [2022-01-11 05:41:11,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 05:41:11,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:11,726 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:11,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 05:41:11,726 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:11,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:11,727 INFO L85 PathProgramCache]: Analyzing trace with hash 199129519, now seen corresponding path program 1 times [2022-01-11 05:41:11,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:11,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549848144] [2022-01-11 05:41:11,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:11,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:11,837 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 05:41:11,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:11,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549848144] [2022-01-11 05:41:11,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549848144] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:11,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:11,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:41:11,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347031086] [2022-01-11 05:41:11,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:11,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:41:11,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:11,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:41:11,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:41:11,843 INFO L87 Difference]: Start difference. First operand 1410 states and 2411 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:11,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:11,955 INFO L93 Difference]: Finished difference Result 1616 states and 2730 transitions. [2022-01-11 05:41:11,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:41:11,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-11 05:41:11,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:11,962 INFO L225 Difference]: With dead ends: 1616 [2022-01-11 05:41:11,962 INFO L226 Difference]: Without dead ends: 1410 [2022-01-11 05:41:11,963 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 05:41:11,966 INFO L933 BasicCegarLoop]: 707 mSDtfsCounter, 442 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:11,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 1681 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:11,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1410 states. [2022-01-11 05:41:12,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1410 to 1410. [2022-01-11 05:41:12,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1408 states have (on average 1.7088068181818181) internal successors, (2406), 1409 states have internal predecessors, (2406), 0 states have call successors, (0), 0 states 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 05:41:12,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 2406 transitions. [2022-01-11 05:41:12,064 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 2406 transitions. Word has length 64 [2022-01-11 05:41:12,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:12,064 INFO L470 AbstractCegarLoop]: Abstraction has 1410 states and 2406 transitions. [2022-01-11 05:41:12,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:12,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 2406 transitions. [2022-01-11 05:41:12,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-11 05:41:12,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:12,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:12,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 05:41:12,072 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:12,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:12,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1845898802, now seen corresponding path program 1 times [2022-01-11 05:41:12,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:12,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242964235] [2022-01-11 05:41:12,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:12,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:12,248 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 05:41:12,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:12,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242964235] [2022-01-11 05:41:12,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242964235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:12,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:12,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-11 05:41:12,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189995540] [2022-01-11 05:41:12,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:12,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 05:41:12,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:12,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 05:41:12,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-11 05:41:12,250 INFO L87 Difference]: Start difference. First operand 1410 states and 2406 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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 05:41:12,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:12,903 INFO L93 Difference]: Finished difference Result 3012 states and 4860 transitions. [2022-01-11 05:41:12,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-11 05:41:12,904 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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 05:41:12,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:12,914 INFO L225 Difference]: With dead ends: 3012 [2022-01-11 05:41:12,915 INFO L226 Difference]: Without dead ends: 2866 [2022-01-11 05:41:12,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2022-01-11 05:41:12,916 INFO L933 BasicCegarLoop]: 807 mSDtfsCounter, 4641 mSDsluCounter, 4835 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4641 SdHoareTripleChecker+Valid, 5642 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:12,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4641 Valid, 5642 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:12,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2866 states. [2022-01-11 05:41:13,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2866 to 1991. [2022-01-11 05:41:13,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1991 states, 1989 states have (on average 1.6827551533433887) internal successors, (3347), 1990 states have internal predecessors, (3347), 0 states have call successors, (0), 0 states 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 05:41:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 3347 transitions. [2022-01-11 05:41:13,112 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 3347 transitions. Word has length 67 [2022-01-11 05:41:13,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:13,112 INFO L470 AbstractCegarLoop]: Abstraction has 1991 states and 3347 transitions. [2022-01-11 05:41:13,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 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 05:41:13,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 3347 transitions. [2022-01-11 05:41:13,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 05:41:13,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:13,116 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 05:41:13,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 05:41:13,117 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:13,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:13,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1418842254, now seen corresponding path program 1 times [2022-01-11 05:41:13,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:13,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618543844] [2022-01-11 05:41:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:13,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:13,228 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 05:41:13,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:13,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618543844] [2022-01-11 05:41:13,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618543844] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:13,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:13,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:41:13,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837756835] [2022-01-11 05:41:13,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:13,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:13,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:13,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:13,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:13,230 INFO L87 Difference]: Start difference. First operand 1991 states and 3347 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:13,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:13,724 INFO L93 Difference]: Finished difference Result 3725 states and 5865 transitions. [2022-01-11 05:41:13,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:41:13,725 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 05:41:13,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:13,737 INFO L225 Difference]: With dead ends: 3725 [2022-01-11 05:41:13,737 INFO L226 Difference]: Without dead ends: 3344 [2022-01-11 05:41:13,738 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 05:41:13,739 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 1374 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1374 SdHoareTripleChecker+Valid, 2384 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:13,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1374 Valid, 2384 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:13,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3344 states. [2022-01-11 05:41:13,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3344 to 2440. [2022-01-11 05:41:13,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2440 states, 2438 states have (on average 1.6468416735028713) internal successors, (4015), 2439 states have internal predecessors, (4015), 0 states have call successors, (0), 0 states 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 05:41:13,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 4015 transitions. [2022-01-11 05:41:13,982 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 4015 transitions. Word has length 68 [2022-01-11 05:41:13,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:13,982 INFO L470 AbstractCegarLoop]: Abstraction has 2440 states and 4015 transitions. [2022-01-11 05:41:13,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:13,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 4015 transitions. [2022-01-11 05:41:13,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 05:41:13,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:13,986 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:13,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 05:41:13,986 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:13,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:13,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1887320845, now seen corresponding path program 1 times [2022-01-11 05:41:13,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:13,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651530648] [2022-01-11 05:41:13,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:13,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:14,141 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 05:41:14,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:14,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651530648] [2022-01-11 05:41:14,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651530648] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:14,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:14,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-11 05:41:14,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204509732] [2022-01-11 05:41:14,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:14,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:41:14,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:14,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:41:14,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:41:14,143 INFO L87 Difference]: Start difference. First operand 2440 states and 4015 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:14,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:14,524 INFO L93 Difference]: Finished difference Result 3078 states and 4956 transitions. [2022-01-11 05:41:14,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 05:41:14,524 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 05:41:14,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:14,532 INFO L225 Difference]: With dead ends: 3078 [2022-01-11 05:41:14,532 INFO L226 Difference]: Without dead ends: 2312 [2022-01-11 05:41:14,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2022-01-11 05:41:14,534 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 1213 mSDsluCounter, 3827 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 4553 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:14,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1213 Valid, 4553 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:14,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2022-01-11 05:41:14,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 2264. [2022-01-11 05:41:14,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2264 states, 2262 states have (on average 1.6317418213969939) internal successors, (3691), 2263 states have internal predecessors, (3691), 0 states have call successors, (0), 0 states 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 05:41:14,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2264 states to 2264 states and 3691 transitions. [2022-01-11 05:41:14,787 INFO L78 Accepts]: Start accepts. Automaton has 2264 states and 3691 transitions. Word has length 69 [2022-01-11 05:41:14,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:14,787 INFO L470 AbstractCegarLoop]: Abstraction has 2264 states and 3691 transitions. [2022-01-11 05:41:14,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:14,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2264 states and 3691 transitions. [2022-01-11 05:41:14,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 05:41:14,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:14,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:14,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 05:41:14,792 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:14,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:14,792 INFO L85 PathProgramCache]: Analyzing trace with hash 752188469, now seen corresponding path program 1 times [2022-01-11 05:41:14,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:14,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450130263] [2022-01-11 05:41:14,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:14,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:14,899 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 05:41:14,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:14,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450130263] [2022-01-11 05:41:14,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450130263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:14,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:14,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:41:14,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226296812] [2022-01-11 05:41:14,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:14,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:14,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:14,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:14,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:14,901 INFO L87 Difference]: Start difference. First operand 2264 states and 3691 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:15,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:15,576 INFO L93 Difference]: Finished difference Result 5444 states and 8317 transitions. [2022-01-11 05:41:15,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:41:15,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-11 05:41:15,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:15,592 INFO L225 Difference]: With dead ends: 5444 [2022-01-11 05:41:15,592 INFO L226 Difference]: Without dead ends: 4438 [2022-01-11 05:41:15,595 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 05:41:15,595 INFO L933 BasicCegarLoop]: 716 mSDtfsCounter, 1262 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1262 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:15,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1262 Valid, 2463 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:15,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4438 states. [2022-01-11 05:41:15,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4438 to 3358. [2022-01-11 05:41:16,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3358 states, 3356 states have (on average 1.5884982121573301) internal successors, (5331), 3357 states have internal predecessors, (5331), 0 states have call successors, (0), 0 states 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 05:41:16,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3358 states to 3358 states and 5331 transitions. [2022-01-11 05:41:16,010 INFO L78 Accepts]: Start accepts. Automaton has 3358 states and 5331 transitions. Word has length 82 [2022-01-11 05:41:16,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:16,010 INFO L470 AbstractCegarLoop]: Abstraction has 3358 states and 5331 transitions. [2022-01-11 05:41:16,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:16,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3358 states and 5331 transitions. [2022-01-11 05:41:16,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 05:41:16,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:16,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:16,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 05:41:16,017 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:16,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:16,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1414197970, now seen corresponding path program 1 times [2022-01-11 05:41:16,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:16,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449859063] [2022-01-11 05:41:16,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:16,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:16,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:16,122 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 05:41:16,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:16,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449859063] [2022-01-11 05:41:16,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449859063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:16,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:16,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:41:16,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208549278] [2022-01-11 05:41:16,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:16,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:16,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:16,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:16,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:16,124 INFO L87 Difference]: Start difference. First operand 3358 states and 5331 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:17,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:17,057 INFO L93 Difference]: Finished difference Result 7106 states and 10673 transitions. [2022-01-11 05:41:17,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:41:17,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-11 05:41:17,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:17,077 INFO L225 Difference]: With dead ends: 7106 [2022-01-11 05:41:17,077 INFO L226 Difference]: Without dead ends: 5234 [2022-01-11 05:41:17,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:41:17,081 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 1095 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:17,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 2527 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:17,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5234 states. [2022-01-11 05:41:17,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5234 to 3793. [2022-01-11 05:41:17,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3793 states, 3791 states have (on average 1.5666051173832762) internal successors, (5939), 3792 states have internal predecessors, (5939), 0 states have call successors, (0), 0 states 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 05:41:17,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3793 states to 3793 states and 5939 transitions. [2022-01-11 05:41:17,659 INFO L78 Accepts]: Start accepts. Automaton has 3793 states and 5939 transitions. Word has length 83 [2022-01-11 05:41:17,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:17,660 INFO L470 AbstractCegarLoop]: Abstraction has 3793 states and 5939 transitions. [2022-01-11 05:41:17,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:17,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3793 states and 5939 transitions. [2022-01-11 05:41:17,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 05:41:17,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:17,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:17,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 05:41:17,667 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:17,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:17,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2021495733, now seen corresponding path program 1 times [2022-01-11 05:41:17,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:17,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723316770] [2022-01-11 05:41:17,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:17,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:17,864 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 05:41:17,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:17,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723316770] [2022-01-11 05:41:17,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723316770] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:17,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:17,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-11 05:41:17,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727319982] [2022-01-11 05:41:17,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:17,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:41:17,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:17,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:41:17,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:41:17,866 INFO L87 Difference]: Start difference. First operand 3793 states and 5939 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:19,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:19,272 INFO L93 Difference]: Finished difference Result 7144 states and 10531 transitions. [2022-01-11 05:41:19,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-11 05:41:19,273 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-11 05:41:19,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:19,286 INFO L225 Difference]: With dead ends: 7144 [2022-01-11 05:41:19,286 INFO L226 Difference]: Without dead ends: 6296 [2022-01-11 05:41:19,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-01-11 05:41:19,289 INFO L933 BasicCegarLoop]: 765 mSDtfsCounter, 3936 mSDsluCounter, 4005 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3936 SdHoareTripleChecker+Valid, 4770 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:19,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3936 Valid, 4770 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:41:19,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6296 states. [2022-01-11 05:41:19,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6296 to 3773. [2022-01-11 05:41:19,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3773 states, 3771 states have (on average 1.5616547334924422) internal successors, (5889), 3772 states have internal predecessors, (5889), 0 states have call successors, (0), 0 states 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 05:41:19,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3773 states to 3773 states and 5889 transitions. [2022-01-11 05:41:19,804 INFO L78 Accepts]: Start accepts. Automaton has 3773 states and 5889 transitions. Word has length 84 [2022-01-11 05:41:19,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:19,804 INFO L470 AbstractCegarLoop]: Abstraction has 3773 states and 5889 transitions. [2022-01-11 05:41:19,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:19,804 INFO L276 IsEmpty]: Start isEmpty. Operand 3773 states and 5889 transitions. [2022-01-11 05:41:19,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 05:41:19,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:19,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:19,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 05:41:19,811 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:19,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:19,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1481763790, now seen corresponding path program 1 times [2022-01-11 05:41:19,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:19,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029866601] [2022-01-11 05:41:19,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:19,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:19,946 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 05:41:19,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:19,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029866601] [2022-01-11 05:41:19,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029866601] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:19,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:19,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-11 05:41:19,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703721988] [2022-01-11 05:41:19,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:19,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-11 05:41:19,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:19,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-11 05:41:19,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:41:19,949 INFO L87 Difference]: Start difference. First operand 3773 states and 5889 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:20,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:20,433 INFO L93 Difference]: Finished difference Result 5969 states and 9091 transitions. [2022-01-11 05:41:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:41:20,433 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-11 05:41:20,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:20,442 INFO L225 Difference]: With dead ends: 5969 [2022-01-11 05:41:20,442 INFO L226 Difference]: Without dead ends: 3886 [2022-01-11 05:41:20,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:41:20,446 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 1152 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 3314 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:20,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1152 Valid, 3314 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:20,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3886 states. [2022-01-11 05:41:20,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3886 to 3773. [2022-01-11 05:41:20,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3773 states, 3771 states have (on average 1.5552903739061257) internal successors, (5865), 3772 states have internal predecessors, (5865), 0 states have call successors, (0), 0 states 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 05:41:20,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3773 states to 3773 states and 5865 transitions. [2022-01-11 05:41:20,928 INFO L78 Accepts]: Start accepts. Automaton has 3773 states and 5865 transitions. Word has length 84 [2022-01-11 05:41:20,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:20,928 INFO L470 AbstractCegarLoop]: Abstraction has 3773 states and 5865 transitions. [2022-01-11 05:41:20,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:20,929 INFO L276 IsEmpty]: Start isEmpty. Operand 3773 states and 5865 transitions. [2022-01-11 05:41:20,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 05:41:20,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:20,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:20,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 05:41:20,935 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:20,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:20,935 INFO L85 PathProgramCache]: Analyzing trace with hash 803099665, now seen corresponding path program 1 times [2022-01-11 05:41:20,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:20,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433672462] [2022-01-11 05:41:20,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:20,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:21,053 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 05:41:21,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:21,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433672462] [2022-01-11 05:41:21,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433672462] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:21,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:21,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:41:21,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117060105] [2022-01-11 05:41:21,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:21,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:41:21,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:21,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:41:21,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:41:21,055 INFO L87 Difference]: Start difference. First operand 3773 states and 5865 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:22,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:22,136 INFO L93 Difference]: Finished difference Result 7814 states and 11482 transitions. [2022-01-11 05:41:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 05:41:22,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-11 05:41:22,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:22,154 INFO L225 Difference]: With dead ends: 7814 [2022-01-11 05:41:22,154 INFO L226 Difference]: Without dead ends: 6240 [2022-01-11 05:41:22,159 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 05:41:22,160 INFO L933 BasicCegarLoop]: 986 mSDtfsCounter, 510 mSDsluCounter, 2260 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 3246 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:22,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 3246 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:22,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6240 states. [2022-01-11 05:41:22,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6240 to 3877. [2022-01-11 05:41:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3877 states, 3875 states have (on average 1.534709677419355) internal successors, (5947), 3876 states have internal predecessors, (5947), 0 states have call successors, (0), 0 states 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 05:41:22,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3877 states to 3877 states and 5947 transitions. [2022-01-11 05:41:22,693 INFO L78 Accepts]: Start accepts. Automaton has 3877 states and 5947 transitions. Word has length 84 [2022-01-11 05:41:22,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:22,694 INFO L470 AbstractCegarLoop]: Abstraction has 3877 states and 5947 transitions. [2022-01-11 05:41:22,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:22,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3877 states and 5947 transitions. [2022-01-11 05:41:22,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 05:41:22,698 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:22,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:22,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 05:41:22,699 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:22,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:22,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1761042830, now seen corresponding path program 1 times [2022-01-11 05:41:22,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:22,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856624384] [2022-01-11 05:41:22,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:22,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:22,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:22,775 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 05:41:22,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:22,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856624384] [2022-01-11 05:41:22,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856624384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:22,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:22,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:41:22,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003744391] [2022-01-11 05:41:22,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:22,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:41:22,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:22,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:41:22,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:41:22,776 INFO L87 Difference]: Start difference. First operand 3877 states and 5947 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:23,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:23,308 INFO L93 Difference]: Finished difference Result 5293 states and 8015 transitions. [2022-01-11 05:41:23,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:41:23,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-11 05:41:23,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:23,316 INFO L225 Difference]: With dead ends: 5293 [2022-01-11 05:41:23,316 INFO L226 Difference]: Without dead ends: 3877 [2022-01-11 05:41:23,319 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 05:41:23,319 INFO L933 BasicCegarLoop]: 702 mSDtfsCounter, 527 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1585 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 05:41:23,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [527 Valid, 1585 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:41:23,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3877 states. [2022-01-11 05:41:23,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3877 to 3877. [2022-01-11 05:41:23,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3877 states, 3875 states have (on average 1.5336774193548388) internal successors, (5943), 3876 states have internal predecessors, (5943), 0 states have call successors, (0), 0 states 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 05:41:23,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3877 states to 3877 states and 5943 transitions. [2022-01-11 05:41:23,854 INFO L78 Accepts]: Start accepts. Automaton has 3877 states and 5943 transitions. Word has length 84 [2022-01-11 05:41:23,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:23,854 INFO L470 AbstractCegarLoop]: Abstraction has 3877 states and 5943 transitions. [2022-01-11 05:41:23,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:23,854 INFO L276 IsEmpty]: Start isEmpty. Operand 3877 states and 5943 transitions. [2022-01-11 05:41:23,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 05:41:23,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:23,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:23,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 05:41:23,861 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:23,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:23,862 INFO L85 PathProgramCache]: Analyzing trace with hash -562985009, now seen corresponding path program 1 times [2022-01-11 05:41:23,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:23,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219845994] [2022-01-11 05:41:23,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:23,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:23,972 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 05:41:23,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:23,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219845994] [2022-01-11 05:41:23,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219845994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:23,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:23,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:41:23,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955333513] [2022-01-11 05:41:23,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:23,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:41:23,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:23,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:41:23,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:41:23,974 INFO L87 Difference]: Start difference. First operand 3877 states and 5943 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:25,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:25,139 INFO L93 Difference]: Finished difference Result 6678 states and 9771 transitions. [2022-01-11 05:41:25,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-11 05:41:25,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-11 05:41:25,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:25,150 INFO L225 Difference]: With dead ends: 6678 [2022-01-11 05:41:25,150 INFO L226 Difference]: Without dead ends: 5835 [2022-01-11 05:41:25,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-01-11 05:41:25,155 INFO L933 BasicCegarLoop]: 1270 mSDtfsCounter, 1219 mSDsluCounter, 3235 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 4505 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:25,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1219 Valid, 4505 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:25,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5835 states. [2022-01-11 05:41:25,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5835 to 3721. [2022-01-11 05:41:25,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3721 states, 3719 states have (on average 1.5270233933853186) internal successors, (5679), 3720 states have internal predecessors, (5679), 0 states have call successors, (0), 0 states 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 05:41:25,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3721 states to 3721 states and 5679 transitions. [2022-01-11 05:41:25,677 INFO L78 Accepts]: Start accepts. Automaton has 3721 states and 5679 transitions. Word has length 84 [2022-01-11 05:41:25,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:25,678 INFO L470 AbstractCegarLoop]: Abstraction has 3721 states and 5679 transitions. [2022-01-11 05:41:25,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:25,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3721 states and 5679 transitions. [2022-01-11 05:41:25,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 05:41:25,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:25,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:25,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 05:41:25,684 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:25,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:25,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1017192278, now seen corresponding path program 1 times [2022-01-11 05:41:25,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:25,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974104698] [2022-01-11 05:41:25,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:25,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:25,879 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 05:41:25,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:25,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974104698] [2022-01-11 05:41:25,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974104698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:25,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:25,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-11 05:41:25,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742344708] [2022-01-11 05:41:25,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:25,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 05:41:25,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:25,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 05:41:25,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-11 05:41:25,881 INFO L87 Difference]: Start difference. First operand 3721 states and 5679 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:30,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:30,302 INFO L93 Difference]: Finished difference Result 23659 states and 34631 transitions. [2022-01-11 05:41:30,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-11 05:41:30,303 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-11 05:41:30,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:30,338 INFO L225 Difference]: With dead ends: 23659 [2022-01-11 05:41:30,338 INFO L226 Difference]: Without dead ends: 22610 [2022-01-11 05:41:30,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=305, Invalid=687, Unknown=0, NotChecked=0, Total=992 [2022-01-11 05:41:30,347 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 7399 mSDsluCounter, 6245 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7399 SdHoareTripleChecker+Valid, 6943 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:30,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7399 Valid, 6943 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-11 05:41:30,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22610 states. [2022-01-11 05:41:32,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22610 to 9685. [2022-01-11 05:41:32,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9685 states, 9683 states have (on average 1.497366518640917) internal successors, (14499), 9684 states have internal predecessors, (14499), 0 states have call successors, (0), 0 states 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 05:41:32,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9685 states to 9685 states and 14499 transitions. [2022-01-11 05:41:32,049 INFO L78 Accepts]: Start accepts. Automaton has 9685 states and 14499 transitions. Word has length 85 [2022-01-11 05:41:32,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:32,049 INFO L470 AbstractCegarLoop]: Abstraction has 9685 states and 14499 transitions. [2022-01-11 05:41:32,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:32,049 INFO L276 IsEmpty]: Start isEmpty. Operand 9685 states and 14499 transitions. [2022-01-11 05:41:32,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 05:41:32,066 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:32,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:41:32,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 05:41:32,067 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:32,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:32,068 INFO L85 PathProgramCache]: Analyzing trace with hash 443768082, now seen corresponding path program 1 times [2022-01-11 05:41:32,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:32,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004011717] [2022-01-11 05:41:32,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:32,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:32,176 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 05:41:32,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:32,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004011717] [2022-01-11 05:41:32,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004011717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:32,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:32,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:41:32,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321032653] [2022-01-11 05:41:32,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:32,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:41:32,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:32,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:41:32,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:41:32,178 INFO L87 Difference]: Start difference. First operand 9685 states and 14499 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:34,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:34,648 INFO L93 Difference]: Finished difference Result 15411 states and 22102 transitions. [2022-01-11 05:41:34,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:41:34,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-11 05:41:34,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:34,664 INFO L225 Difference]: With dead ends: 15411 [2022-01-11 05:41:34,665 INFO L226 Difference]: Without dead ends: 10741 [2022-01-11 05:41:34,675 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 05:41:34,676 INFO L933 BasicCegarLoop]: 806 mSDtfsCounter, 292 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2295 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:34,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 2295 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:34,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10741 states. [2022-01-11 05:41:35,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10741 to 7955. [2022-01-11 05:41:35,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7955 states, 7953 states have (on average 1.4784358103860178) internal successors, (11758), 7954 states have internal predecessors, (11758), 0 states have call successors, (0), 0 states 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 05:41:35,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7955 states to 7955 states and 11758 transitions. [2022-01-11 05:41:35,900 INFO L78 Accepts]: Start accepts. Automaton has 7955 states and 11758 transitions. Word has length 85 [2022-01-11 05:41:35,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:35,900 INFO L470 AbstractCegarLoop]: Abstraction has 7955 states and 11758 transitions. [2022-01-11 05:41:35,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:41:35,901 INFO L276 IsEmpty]: Start isEmpty. Operand 7955 states and 11758 transitions. [2022-01-11 05:41:35,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-11 05:41:35,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:35,914 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] [2022-01-11 05:41:35,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 05:41:35,914 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:35,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:35,915 INFO L85 PathProgramCache]: Analyzing trace with hash 303794437, now seen corresponding path program 1 times [2022-01-11 05:41:35,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:35,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355736294] [2022-01-11 05:41:35,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:35,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:36,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:36,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:36,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355736294] [2022-01-11 05:41:36,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355736294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:36,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:36,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-11 05:41:36,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156175854] [2022-01-11 05:41:36,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:36,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 05:41:36,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:36,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 05:41:36,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-11 05:41:36,058 INFO L87 Difference]: Start difference. First operand 7955 states and 11758 transitions. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 05:41:42,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:42,668 INFO L93 Difference]: Finished difference Result 33552 states and 48009 transitions. [2022-01-11 05:41:42,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-11 05:41:42,669 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-01-11 05:41:42,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:42,714 INFO L225 Difference]: With dead ends: 33552 [2022-01-11 05:41:42,714 INFO L226 Difference]: Without dead ends: 31746 [2022-01-11 05:41:42,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=305, Invalid=687, Unknown=0, NotChecked=0, Total=992 [2022-01-11 05:41:42,724 INFO L933 BasicCegarLoop]: 702 mSDtfsCounter, 7006 mSDsluCounter, 5925 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7006 SdHoareTripleChecker+Valid, 6627 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:42,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7006 Valid, 6627 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 05:41:42,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31746 states. [2022-01-11 05:41:45,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31746 to 17432. [2022-01-11 05:41:45,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17432 states, 17430 states have (on average 1.4673551348250145) internal successors, (25576), 17431 states have internal predecessors, (25576), 0 states have call successors, (0), 0 states 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 05:41:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17432 states to 17432 states and 25576 transitions. [2022-01-11 05:41:45,906 INFO L78 Accepts]: Start accepts. Automaton has 17432 states and 25576 transitions. Word has length 86 [2022-01-11 05:41:45,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:45,906 INFO L470 AbstractCegarLoop]: Abstraction has 17432 states and 25576 transitions. [2022-01-11 05:41:45,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 05:41:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 17432 states and 25576 transitions. [2022-01-11 05:41:45,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-11 05:41:45,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:45,924 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] [2022-01-11 05:41:45,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 05:41:45,925 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:45,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:45,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1700406883, now seen corresponding path program 1 times [2022-01-11 05:41:45,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:45,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757836634] [2022-01-11 05:41:45,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:45,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:46,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:41:46,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:46,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757836634] [2022-01-11 05:41:46,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757836634] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:46,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:46,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-11 05:41:46,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519519979] [2022-01-11 05:41:46,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:46,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:41:46,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:46,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:41:46,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:41:46,058 INFO L87 Difference]: Start difference. First operand 17432 states and 25576 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 05:41:50,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:50,965 INFO L93 Difference]: Finished difference Result 27860 states and 39563 transitions. [2022-01-11 05:41:50,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-11 05:41:50,966 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-01-11 05:41:50,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:50,998 INFO L225 Difference]: With dead ends: 27860 [2022-01-11 05:41:50,999 INFO L226 Difference]: Without dead ends: 22189 [2022-01-11 05:41:51,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2022-01-11 05:41:51,009 INFO L933 BasicCegarLoop]: 781 mSDtfsCounter, 2697 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2697 SdHoareTripleChecker+Valid, 3448 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:51,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2697 Valid, 3448 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:51,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22189 states. [2022-01-11 05:41:54,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22189 to 17248. [2022-01-11 05:41:54,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17248 states, 17246 states have (on average 1.461208396149832) internal successors, (25200), 17247 states have internal predecessors, (25200), 0 states have call successors, (0), 0 states 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 05:41:54,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17248 states to 17248 states and 25200 transitions. [2022-01-11 05:41:54,224 INFO L78 Accepts]: Start accepts. Automaton has 17248 states and 25200 transitions. Word has length 86 [2022-01-11 05:41:54,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:41:54,224 INFO L470 AbstractCegarLoop]: Abstraction has 17248 states and 25200 transitions. [2022-01-11 05:41:54,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 05:41:54,224 INFO L276 IsEmpty]: Start isEmpty. Operand 17248 states and 25200 transitions. [2022-01-11 05:41:54,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-11 05:41:54,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:41:54,240 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] [2022-01-11 05:41:54,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 05:41:54,241 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:41:54,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:41:54,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1842696384, now seen corresponding path program 1 times [2022-01-11 05:41:54,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:41:54,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412728283] [2022-01-11 05:41:54,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:41:54,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:41:54,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:41:54,354 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 05:41:54,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:41:54,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412728283] [2022-01-11 05:41:54,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412728283] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:41:54,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:41:54,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-11 05:41:54,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571622500] [2022-01-11 05:41:54,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:41:54,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:41:54,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:41:54,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:41:54,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:41:54,356 INFO L87 Difference]: Start difference. First operand 17248 states and 25200 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 05:41:59,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:41:59,388 INFO L93 Difference]: Finished difference Result 30153 states and 42438 transitions. [2022-01-11 05:41:59,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-11 05:41:59,389 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-01-11 05:41:59,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:41:59,425 INFO L225 Difference]: With dead ends: 30153 [2022-01-11 05:41:59,425 INFO L226 Difference]: Without dead ends: 22390 [2022-01-11 05:41:59,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2022-01-11 05:41:59,438 INFO L933 BasicCegarLoop]: 751 mSDtfsCounter, 1350 mSDsluCounter, 3908 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 4659 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:41:59,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1350 Valid, 4659 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:41:59,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22390 states. [2022-01-11 05:42:02,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22390 to 17248. [2022-01-11 05:42:02,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17248 states, 17246 states have (on average 1.4514670068421662) internal successors, (25032), 17247 states have internal predecessors, (25032), 0 states have call successors, (0), 0 states 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 05:42:02,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17248 states to 17248 states and 25032 transitions. [2022-01-11 05:42:02,673 INFO L78 Accepts]: Start accepts. Automaton has 17248 states and 25032 transitions. Word has length 86 [2022-01-11 05:42:02,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:02,673 INFO L470 AbstractCegarLoop]: Abstraction has 17248 states and 25032 transitions. [2022-01-11 05:42:02,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states 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 05:42:02,673 INFO L276 IsEmpty]: Start isEmpty. Operand 17248 states and 25032 transitions. [2022-01-11 05:42:02,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-11 05:42:02,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:02,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:02,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 05:42:02,688 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:02,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:02,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1811676577, now seen corresponding path program 1 times [2022-01-11 05:42:02,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:02,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067849935] [2022-01-11 05:42:02,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:02,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:02,788 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 05:42:02,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:02,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067849935] [2022-01-11 05:42:02,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067849935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:02,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:02,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:42:02,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719659301] [2022-01-11 05:42:02,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:02,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:42:02,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:02,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:42:02,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:02,790 INFO L87 Difference]: Start difference. First operand 17248 states and 25032 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)