/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:53:13,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:53:13,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:53:13,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:53:13,101 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:53:13,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:53:13,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:53:13,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:53:13,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:53:13,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:53:13,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:53:13,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:53:13,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:53:13,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:53:13,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:53:13,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:53:13,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:53:13,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:53:13,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:53:13,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:53:13,131 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:53:13,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:53:13,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:53:13,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:53:13,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:53:13,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:53:13,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:53:13,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:53:13,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:53:13,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:53:13,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:53:13,142 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:53:13,143 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:53:13,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:53:13,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:53:13,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:53:13,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:53:13,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:53:13,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:53:13,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:53:13,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:53:13,152 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:53:13,175 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:53:13,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:53:13,178 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:53:13,178 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:53:13,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:53:13,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:53:13,180 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:53:13,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:53:13,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:53:13,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:53:13,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:53:13,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:53:13,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:53:13,181 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:53:13,181 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:53:13,181 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:53:13,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:53:13,181 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:53:13,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:53:13,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:53:13,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:53:13,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:53:13,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:53:13,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:53:13,182 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:53:13,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:53:13,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:53:13,183 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:53:13,183 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:53:13,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:53:13,183 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:53:13,183 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:53:13,184 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:53:13,184 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:53:13,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:53:13,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:53:13,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:53:13,362 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:53:13,362 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:53:13,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product17.cil.c [2022-01-10 23:53:13,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/291c34b32/7d0b6f70778e47b580565f92a1882dd5/FLAGc2cb2c6fa [2022-01-10 23:53:13,830 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:53:13,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product17.cil.c [2022-01-10 23:53:13,851 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/291c34b32/7d0b6f70778e47b580565f92a1882dd5/FLAGc2cb2c6fa [2022-01-10 23:53:14,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/291c34b32/7d0b6f70778e47b580565f92a1882dd5 [2022-01-10 23:53:14,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:53:14,181 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:53:14,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:53:14,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:53:14,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:53:14,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:53:14" (1/1) ... [2022-01-10 23:53:14,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d311f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:14, skipping insertion in model container [2022-01-10 23:53:14,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:53:14" (1/1) ... [2022-01-10 23:53:14,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:53:14,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:53:14,647 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_product17.cil.c[18815,18828] [2022-01-10 23:53:14,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:53:14,777 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:53:14,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:53:14,815 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_product17.cil.c[18815,18828] [2022-01-10 23:53:14,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:53:14,889 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:53:14,923 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_product17.cil.c[18815,18828] [2022-01-10 23:53:14,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:53:14,996 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:53:14,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:14 WrapperNode [2022-01-10 23:53:14,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:53:14,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:53:14,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:53:14,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:53:15,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:14" (1/1) ... [2022-01-10 23:53:15,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:14" (1/1) ... [2022-01-10 23:53:15,112 INFO L137 Inliner]: procedures = 129, calls = 209, calls flagged for inlining = 120, calls inlined = 224, statements flattened = 3684 [2022-01-10 23:53:15,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:53:15,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:53:15,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:53:15,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:53:15,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:14" (1/1) ... [2022-01-10 23:53:15,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:14" (1/1) ... [2022-01-10 23:53:15,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:14" (1/1) ... [2022-01-10 23:53:15,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:14" (1/1) ... [2022-01-10 23:53:15,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:14" (1/1) ... [2022-01-10 23:53:15,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:14" (1/1) ... [2022-01-10 23:53:15,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:14" (1/1) ... [2022-01-10 23:53:15,191 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:53:15,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:53:15,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:53:15,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:53:15,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:14" (1/1) ... [2022-01-10 23:53:15,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:53:15,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:53:15,261 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 23:53:15,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 23:53:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:53:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:53:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:53:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:53:15,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:53:15,431 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:53:15,432 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:53:16,838 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:53:16,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:53:16,847 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:53:16,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:53:16 BoogieIcfgContainer [2022-01-10 23:53:16,865 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:53:16,865 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:53:16,865 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:53:16,866 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:53:16,868 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:53:16" (1/1) ... [2022-01-10 23:53:17,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:53:17 BasicIcfg [2022-01-10 23:53:17,162 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:53:17,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:53:17,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:53:17,165 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:53:17,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:53:14" (1/4) ... [2022-01-10 23:53:17,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b57d102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:53:17, skipping insertion in model container [2022-01-10 23:53:17,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:53:14" (2/4) ... [2022-01-10 23:53:17,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b57d102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:53:17, skipping insertion in model container [2022-01-10 23:53:17,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:53:16" (3/4) ... [2022-01-10 23:53:17,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b57d102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:53:17, skipping insertion in model container [2022-01-10 23:53:17,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:53:17" (4/4) ... [2022-01-10 23:53:17,167 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product17.cil.cTransformedIcfg [2022-01-10 23:53:17,171 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:53:17,171 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 23:53:17,201 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:53:17,206 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 23:53:17,206 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 23:53:17,223 INFO L276 IsEmpty]: Start isEmpty. Operand has 841 states, 834 states have (on average 1.7194244604316546) internal successors, (1434), 840 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:17,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 23:53:17,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:17,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:17,232 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:17,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:17,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1386069052, now seen corresponding path program 1 times [2022-01-10 23:53:17,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:17,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972949887] [2022-01-10 23:53:17,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:17,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:17,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:17,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972949887] [2022-01-10 23:53:17,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972949887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:17,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:17,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:53:17,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820320106] [2022-01-10 23:53:17,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:17,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:53:17,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:17,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:53:17,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:53:17,486 INFO L87 Difference]: Start difference. First operand has 841 states, 834 states have (on average 1.7194244604316546) internal successors, (1434), 840 states have internal predecessors, (1434), 0 states have call successors, (0), 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 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:17,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:17,569 INFO L93 Difference]: Finished difference Result 1378 states and 2329 transitions. [2022-01-10 23:53:17,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:53:17,571 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 23:53:17,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:17,587 INFO L225 Difference]: With dead ends: 1378 [2022-01-10 23:53:17,587 INFO L226 Difference]: Without dead ends: 815 [2022-01-10 23:53:17,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:53:17,595 INFO L933 BasicCegarLoop]: 1420 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, 1420 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:17,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1420 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:53:17,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2022-01-10 23:53:17,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 815. [2022-01-10 23:53:17,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 809 states have (on average 1.7243510506798516) internal successors, (1395), 814 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:17,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1395 transitions. [2022-01-10 23:53:17,666 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1395 transitions. Word has length 58 [2022-01-10 23:53:17,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:17,666 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 1395 transitions. [2022-01-10 23:53:17,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:17,667 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1395 transitions. [2022-01-10 23:53:17,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 23:53:17,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:17,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:17,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:53:17,670 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:17,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:17,670 INFO L85 PathProgramCache]: Analyzing trace with hash 122651950, now seen corresponding path program 1 times [2022-01-10 23:53:17,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:17,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229499262] [2022-01-10 23:53:17,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:17,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:17,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:17,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:17,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229499262] [2022-01-10 23:53:17,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229499262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:17,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:17,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:53:17,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862471081] [2022-01-10 23:53:17,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:17,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:53:17,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:17,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:53:17,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:53:17,860 INFO L87 Difference]: Start difference. First operand 815 states and 1395 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:17,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:17,998 INFO L93 Difference]: Finished difference Result 1611 states and 2762 transitions. [2022-01-10 23:53:17,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:53:17,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-10 23:53:18,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:18,003 INFO L225 Difference]: With dead ends: 1611 [2022-01-10 23:53:18,003 INFO L226 Difference]: Without dead ends: 815 [2022-01-10 23:53:18,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:53:18,006 INFO L933 BasicCegarLoop]: 1375 mSDtfsCounter, 1370 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:18,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1370 Valid, 1388 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:53:18,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2022-01-10 23:53:18,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 815. [2022-01-10 23:53:18,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 809 states have (on average 1.7218788627935724) internal successors, (1393), 814 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:18,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1393 transitions. [2022-01-10 23:53:18,046 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1393 transitions. Word has length 59 [2022-01-10 23:53:18,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:18,047 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 1393 transitions. [2022-01-10 23:53:18,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:18,050 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1393 transitions. [2022-01-10 23:53:18,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 23:53:18,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:18,060 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:18,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:53:18,060 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:18,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:18,061 INFO L85 PathProgramCache]: Analyzing trace with hash 539235374, now seen corresponding path program 1 times [2022-01-10 23:53:18,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:18,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281338231] [2022-01-10 23:53:18,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:18,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:18,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:18,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:18,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281338231] [2022-01-10 23:53:18,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281338231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:18,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:18,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:53:18,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878086950] [2022-01-10 23:53:18,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:18,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:53:18,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:18,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:53:18,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:18,229 INFO L87 Difference]: Start difference. First operand 815 states and 1393 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:18,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:18,450 INFO L93 Difference]: Finished difference Result 3943 states and 6761 transitions. [2022-01-10 23:53:18,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:53:18,451 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 23:53:18,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:18,490 INFO L225 Difference]: With dead ends: 3943 [2022-01-10 23:53:18,491 INFO L226 Difference]: Without dead ends: 3152 [2022-01-10 23:53:18,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:53:18,496 INFO L933 BasicCegarLoop]: 2709 mSDtfsCounter, 6748 mSDsluCounter, 4051 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6748 SdHoareTripleChecker+Valid, 6760 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:18,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6748 Valid, 6760 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:53:18,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3152 states. [2022-01-10 23:53:18,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3152 to 815. [2022-01-10 23:53:18,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 809 states have (on average 1.7206427688504327) internal successors, (1392), 814 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:18,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1392 transitions. [2022-01-10 23:53:18,536 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1392 transitions. Word has length 61 [2022-01-10 23:53:18,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:18,537 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 1392 transitions. [2022-01-10 23:53:18,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:18,537 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1392 transitions. [2022-01-10 23:53:18,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 23:53:18,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:18,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:18,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:53:18,538 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:18,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:18,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1109976030, now seen corresponding path program 1 times [2022-01-10 23:53:18,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:18,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674408440] [2022-01-10 23:53:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:18,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:18,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:18,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:18,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674408440] [2022-01-10 23:53:18,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674408440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:18,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:18,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:53:18,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353152720] [2022-01-10 23:53:18,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:18,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:53:18,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:18,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:53:18,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:53:18,614 INFO L87 Difference]: Start difference. First operand 815 states and 1392 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:18,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:18,668 INFO L93 Difference]: Finished difference Result 1615 states and 2762 transitions. [2022-01-10 23:53:18,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:53:18,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 23:53:18,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:18,672 INFO L225 Difference]: With dead ends: 1615 [2022-01-10 23:53:18,672 INFO L226 Difference]: Without dead ends: 829 [2022-01-10 23:53:18,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:53:18,681 INFO L933 BasicCegarLoop]: 1406 mSDtfsCounter, 1371 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:18,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1371 Valid, 1428 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:53:18,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-01-10 23:53:18,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 815. [2022-01-10 23:53:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 809 states have (on average 1.719406674907293) internal successors, (1391), 814 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:18,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1391 transitions. [2022-01-10 23:53:18,720 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1391 transitions. Word has length 62 [2022-01-10 23:53:18,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:18,721 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 1391 transitions. [2022-01-10 23:53:18,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:18,721 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1391 transitions. [2022-01-10 23:53:18,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 23:53:18,723 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:18,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:18,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:53:18,724 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:18,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:18,726 INFO L85 PathProgramCache]: Analyzing trace with hash 474470927, now seen corresponding path program 1 times [2022-01-10 23:53:18,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:18,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684202246] [2022-01-10 23:53:18,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:18,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:18,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:18,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:18,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684202246] [2022-01-10 23:53:18,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684202246] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:18,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:18,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:53:18,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825205040] [2022-01-10 23:53:18,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:18,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:53:18,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:18,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:53:18,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:18,835 INFO L87 Difference]: Start difference. First operand 815 states and 1391 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:19,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:19,014 INFO L93 Difference]: Finished difference Result 2379 states and 4073 transitions. [2022-01-10 23:53:19,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:53:19,015 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 23:53:19,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:19,019 INFO L225 Difference]: With dead ends: 2379 [2022-01-10 23:53:19,020 INFO L226 Difference]: Without dead ends: 1598 [2022-01-10 23:53:19,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:53:19,021 INFO L933 BasicCegarLoop]: 1400 mSDtfsCounter, 6671 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6671 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:19,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6671 Valid, 2814 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:53:19,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2022-01-10 23:53:19,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 815. [2022-01-10 23:53:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 809 states have (on average 1.7169344870210137) internal successors, (1389), 814 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:19,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1389 transitions. [2022-01-10 23:53:19,066 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1389 transitions. Word has length 63 [2022-01-10 23:53:19,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:19,067 INFO L470 AbstractCegarLoop]: Abstraction has 815 states and 1389 transitions. [2022-01-10 23:53:19,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:19,067 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1389 transitions. [2022-01-10 23:53:19,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 23:53:19,068 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:19,068 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:19,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:53:19,068 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:19,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:19,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1558957652, now seen corresponding path program 1 times [2022-01-10 23:53:19,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:19,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356458365] [2022-01-10 23:53:19,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:19,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:19,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:19,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356458365] [2022-01-10 23:53:19,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356458365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:19,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:19,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:53:19,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321546051] [2022-01-10 23:53:19,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:19,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:53:19,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:19,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:53:19,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:53:19,154 INFO L87 Difference]: Start difference. First operand 815 states and 1389 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:19,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:19,503 INFO L93 Difference]: Finished difference Result 4642 states and 7902 transitions. [2022-01-10 23:53:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:53:19,504 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 23:53:19,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:19,517 INFO L225 Difference]: With dead ends: 4642 [2022-01-10 23:53:19,517 INFO L226 Difference]: Without dead ends: 4144 [2022-01-10 23:53:19,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:53:19,520 INFO L933 BasicCegarLoop]: 2583 mSDtfsCounter, 8370 mSDsluCounter, 8369 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8370 SdHoareTripleChecker+Valid, 10952 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:19,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8370 Valid, 10952 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:53:19,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4144 states. [2022-01-10 23:53:19,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4144 to 1370. [2022-01-10 23:53:19,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1364 states have (on average 1.719941348973607) internal successors, (2346), 1369 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:19,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2346 transitions. [2022-01-10 23:53:19,629 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2346 transitions. Word has length 65 [2022-01-10 23:53:19,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:19,630 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 2346 transitions. [2022-01-10 23:53:19,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:19,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2346 transitions. [2022-01-10 23:53:19,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 23:53:19,631 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:19,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:19,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:53:19,632 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:19,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:19,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1249993550, now seen corresponding path program 1 times [2022-01-10 23:53:19,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:19,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941238851] [2022-01-10 23:53:19,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:19,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:19,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:19,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:19,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941238851] [2022-01-10 23:53:19,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941238851] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:19,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:19,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:53:19,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091908260] [2022-01-10 23:53:19,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:19,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:53:19,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:19,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:53:19,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:19,724 INFO L87 Difference]: Start difference. First operand 1370 states and 2346 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:19,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:19,844 INFO L93 Difference]: Finished difference Result 2376 states and 4035 transitions. [2022-01-10 23:53:19,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:53:19,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 23:53:19,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:19,849 INFO L225 Difference]: With dead ends: 2376 [2022-01-10 23:53:19,849 INFO L226 Difference]: Without dead ends: 1612 [2022-01-10 23:53:19,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:53:19,851 INFO L933 BasicCegarLoop]: 1371 mSDtfsCounter, 3877 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3877 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:19,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3877 Valid, 2818 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:53:19,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2022-01-10 23:53:19,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1370. [2022-01-10 23:53:19,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1364 states have (on average 1.717008797653959) internal successors, (2342), 1369 states have internal predecessors, (2342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:19,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2342 transitions. [2022-01-10 23:53:19,915 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2342 transitions. Word has length 66 [2022-01-10 23:53:19,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:19,916 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 2342 transitions. [2022-01-10 23:53:19,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:19,916 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2342 transitions. [2022-01-10 23:53:19,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 23:53:19,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:19,917 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:19,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:53:19,918 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:19,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:19,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1698167004, now seen corresponding path program 1 times [2022-01-10 23:53:19,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:19,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477938086] [2022-01-10 23:53:19,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:19,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:19,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:19,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477938086] [2022-01-10 23:53:19,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477938086] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:19,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:19,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:53:19,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218520380] [2022-01-10 23:53:19,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:19,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:53:19,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:19,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:53:19,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:19,984 INFO L87 Difference]: Start difference. First operand 1370 states and 2342 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:20,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:20,234 INFO L93 Difference]: Finished difference Result 3987 states and 6855 transitions. [2022-01-10 23:53:20,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:53:20,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-10 23:53:20,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:20,242 INFO L225 Difference]: With dead ends: 3987 [2022-01-10 23:53:20,242 INFO L226 Difference]: Without dead ends: 2654 [2022-01-10 23:53:20,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:53:20,244 INFO L933 BasicCegarLoop]: 2677 mSDtfsCounter, 4098 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4098 SdHoareTripleChecker+Valid, 4017 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:20,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4098 Valid, 4017 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:53:20,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2022-01-10 23:53:20,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 1370. [2022-01-10 23:53:20,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1364 states have (on average 1.715542521994135) internal successors, (2340), 1369 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:20,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2340 transitions. [2022-01-10 23:53:20,315 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2340 transitions. Word has length 66 [2022-01-10 23:53:20,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:20,315 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 2340 transitions. [2022-01-10 23:53:20,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:20,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2340 transitions. [2022-01-10 23:53:20,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 23:53:20,316 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:20,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:20,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:53:20,317 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:20,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:20,317 INFO L85 PathProgramCache]: Analyzing trace with hash 265295739, now seen corresponding path program 1 times [2022-01-10 23:53:20,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:20,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471724809] [2022-01-10 23:53:20,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:20,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:20,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:20,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471724809] [2022-01-10 23:53:20,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471724809] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:20,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:20,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:53:20,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311427702] [2022-01-10 23:53:20,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:20,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:53:20,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:20,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:53:20,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:53:20,382 INFO L87 Difference]: Start difference. First operand 1370 states and 2340 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:20,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:20,486 INFO L93 Difference]: Finished difference Result 1902 states and 3218 transitions. [2022-01-10 23:53:20,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:53:20,487 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 23:53:20,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:20,491 INFO L225 Difference]: With dead ends: 1902 [2022-01-10 23:53:20,491 INFO L226 Difference]: Without dead ends: 1370 [2022-01-10 23:53:20,492 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:20,492 INFO L933 BasicCegarLoop]: 1367 mSDtfsCounter, 1482 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:20,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 2625 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:53:20,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2022-01-10 23:53:20,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1370. [2022-01-10 23:53:20,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1364 states have (on average 1.7089442815249267) internal successors, (2331), 1369 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:20,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2331 transitions. [2022-01-10 23:53:20,559 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2331 transitions. Word has length 67 [2022-01-10 23:53:20,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:20,559 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 2331 transitions. [2022-01-10 23:53:20,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:20,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2331 transitions. [2022-01-10 23:53:20,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:53:20,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:20,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:20,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:53:20,561 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:20,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:20,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1189773171, now seen corresponding path program 1 times [2022-01-10 23:53:20,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:20,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467058153] [2022-01-10 23:53:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:20,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:20,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:20,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:20,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467058153] [2022-01-10 23:53:20,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467058153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:20,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:20,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:53:20,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646771195] [2022-01-10 23:53:20,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:20,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:53:20,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:20,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:53:20,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:53:20,674 INFO L87 Difference]: Start difference. First operand 1370 states and 2331 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:22,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:22,145 INFO L93 Difference]: Finished difference Result 6450 states and 10525 transitions. [2022-01-10 23:53:22,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-10 23:53:22,146 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-10 23:53:22,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:22,163 INFO L225 Difference]: With dead ends: 6450 [2022-01-10 23:53:22,163 INFO L226 Difference]: Without dead ends: 5978 [2022-01-10 23:53:22,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=537, Invalid=1533, Unknown=0, NotChecked=0, Total=2070 [2022-01-10 23:53:22,166 INFO L933 BasicCegarLoop]: 2843 mSDtfsCounter, 12531 mSDsluCounter, 15406 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12531 SdHoareTripleChecker+Valid, 18249 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:22,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12531 Valid, 18249 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 23:53:22,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5978 states. [2022-01-10 23:53:22,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5978 to 2399. [2022-01-10 23:53:22,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 2393 states have (on average 1.6899289594651066) internal successors, (4044), 2398 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:22,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 4044 transitions. [2022-01-10 23:53:22,330 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 4044 transitions. Word has length 70 [2022-01-10 23:53:22,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:22,330 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 4044 transitions. [2022-01-10 23:53:22,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:22,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 4044 transitions. [2022-01-10 23:53:22,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 23:53:22,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:22,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:22,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:53:22,333 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:22,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:22,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1082244568, now seen corresponding path program 1 times [2022-01-10 23:53:22,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:22,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881737456] [2022-01-10 23:53:22,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:22,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:22,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:22,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881737456] [2022-01-10 23:53:22,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881737456] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:22,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:22,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:53:22,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643816569] [2022-01-10 23:53:22,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:22,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:53:22,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:22,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:53:22,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:53:22,426 INFO L87 Difference]: Start difference. First operand 2399 states and 4044 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:22,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:22,816 INFO L93 Difference]: Finished difference Result 4267 states and 7162 transitions. [2022-01-10 23:53:22,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 23:53:22,816 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 23:53:22,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:22,824 INFO L225 Difference]: With dead ends: 4267 [2022-01-10 23:53:22,824 INFO L226 Difference]: Without dead ends: 2672 [2022-01-10 23:53:22,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2022-01-10 23:53:22,828 INFO L933 BasicCegarLoop]: 1351 mSDtfsCounter, 4459 mSDsluCounter, 4783 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4459 SdHoareTripleChecker+Valid, 6134 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:22,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4459 Valid, 6134 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:53:22,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2022-01-10 23:53:22,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 2399. [2022-01-10 23:53:22,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 2393 states have (on average 1.6832427914751358) internal successors, (4028), 2398 states have internal predecessors, (4028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:22,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 4028 transitions. [2022-01-10 23:53:22,979 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 4028 transitions. Word has length 71 [2022-01-10 23:53:22,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:22,979 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 4028 transitions. [2022-01-10 23:53:22,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:22,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 4028 transitions. [2022-01-10 23:53:22,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 23:53:22,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:22,994 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:22,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:53:22,994 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:22,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:22,994 INFO L85 PathProgramCache]: Analyzing trace with hash 85172215, now seen corresponding path program 1 times [2022-01-10 23:53:22,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:22,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766618557] [2022-01-10 23:53:22,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:22,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:23,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:23,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:23,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766618557] [2022-01-10 23:53:23,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766618557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:23,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:23,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:53:23,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443621638] [2022-01-10 23:53:23,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:23,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:53:23,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:23,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:53:23,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:23,082 INFO L87 Difference]: Start difference. First operand 2399 states and 4028 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:23,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:23,787 INFO L93 Difference]: Finished difference Result 8049 states and 13182 transitions. [2022-01-10 23:53:23,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:53:23,787 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 23:53:23,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:23,811 INFO L225 Difference]: With dead ends: 8049 [2022-01-10 23:53:23,811 INFO L226 Difference]: Without dead ends: 6904 [2022-01-10 23:53:23,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:53:23,814 INFO L933 BasicCegarLoop]: 1365 mSDtfsCounter, 4379 mSDsluCounter, 3768 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4379 SdHoareTripleChecker+Valid, 5133 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:23,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4379 Valid, 5133 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:53:23,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6904 states. [2022-01-10 23:53:24,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6904 to 3596. [2022-01-10 23:53:24,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3596 states, 3590 states have (on average 1.659610027855153) internal successors, (5958), 3595 states have internal predecessors, (5958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:24,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3596 states to 3596 states and 5958 transitions. [2022-01-10 23:53:24,108 INFO L78 Accepts]: Start accepts. Automaton has 3596 states and 5958 transitions. Word has length 71 [2022-01-10 23:53:24,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:24,108 INFO L470 AbstractCegarLoop]: Abstraction has 3596 states and 5958 transitions. [2022-01-10 23:53:24,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:24,108 INFO L276 IsEmpty]: Start isEmpty. Operand 3596 states and 5958 transitions. [2022-01-10 23:53:24,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:53:24,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:24,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:24,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:53:24,110 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:24,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:24,111 INFO L85 PathProgramCache]: Analyzing trace with hash -127256105, now seen corresponding path program 1 times [2022-01-10 23:53:24,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:24,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28675406] [2022-01-10 23:53:24,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:24,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:24,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:24,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28675406] [2022-01-10 23:53:24,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28675406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:24,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:24,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 23:53:24,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702106255] [2022-01-10 23:53:24,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:24,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:53:24,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:24,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:53:24,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:53:24,213 INFO L87 Difference]: Start difference. First operand 3596 states and 5958 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:24,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:24,689 INFO L93 Difference]: Finished difference Result 5984 states and 9844 transitions. [2022-01-10 23:53:24,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 23:53:24,689 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 23:53:24,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:24,697 INFO L225 Difference]: With dead ends: 5984 [2022-01-10 23:53:24,697 INFO L226 Difference]: Without dead ends: 3714 [2022-01-10 23:53:24,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:53:24,703 INFO L933 BasicCegarLoop]: 1422 mSDtfsCounter, 4605 mSDsluCounter, 7023 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4605 SdHoareTripleChecker+Valid, 8445 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:24,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4605 Valid, 8445 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:53:24,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3714 states. [2022-01-10 23:53:24,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3714 to 3332. [2022-01-10 23:53:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3332 states, 3326 states have (on average 1.645219482862297) internal successors, (5472), 3331 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:24,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3332 states to 3332 states and 5472 transitions. [2022-01-10 23:53:24,984 INFO L78 Accepts]: Start accepts. Automaton has 3332 states and 5472 transitions. Word has length 72 [2022-01-10 23:53:24,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:24,984 INFO L470 AbstractCegarLoop]: Abstraction has 3332 states and 5472 transitions. [2022-01-10 23:53:24,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:24,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3332 states and 5472 transitions. [2022-01-10 23:53:24,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 23:53:24,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:24,987 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:24,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:53:24,988 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:24,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:24,988 INFO L85 PathProgramCache]: Analyzing trace with hash -428992896, now seen corresponding path program 1 times [2022-01-10 23:53:24,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:24,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051843208] [2022-01-10 23:53:24,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:24,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:25,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:25,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:25,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051843208] [2022-01-10 23:53:25,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051843208] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:25,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:25,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:53:25,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246681225] [2022-01-10 23:53:25,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:25,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:53:25,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:25,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:53:25,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:25,090 INFO L87 Difference]: Start difference. First operand 3332 states and 5472 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:26,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:26,335 INFO L93 Difference]: Finished difference Result 12516 states and 19924 transitions. [2022-01-10 23:53:26,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:53:26,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-10 23:53:26,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:26,353 INFO L225 Difference]: With dead ends: 12516 [2022-01-10 23:53:26,353 INFO L226 Difference]: Without dead ends: 10094 [2022-01-10 23:53:26,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:53:26,359 INFO L933 BasicCegarLoop]: 1394 mSDtfsCounter, 3831 mSDsluCounter, 3949 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3831 SdHoareTripleChecker+Valid, 5343 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:26,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3831 Valid, 5343 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:53:26,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10094 states. [2022-01-10 23:53:26,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10094 to 5842. [2022-01-10 23:53:26,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5842 states, 5836 states have (on average 1.6213159698423578) internal successors, (9462), 5841 states have internal predecessors, (9462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:26,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5842 states to 5842 states and 9462 transitions. [2022-01-10 23:53:26,920 INFO L78 Accepts]: Start accepts. Automaton has 5842 states and 9462 transitions. Word has length 85 [2022-01-10 23:53:26,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:26,920 INFO L470 AbstractCegarLoop]: Abstraction has 5842 states and 9462 transitions. [2022-01-10 23:53:26,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:26,921 INFO L276 IsEmpty]: Start isEmpty. Operand 5842 states and 9462 transitions. [2022-01-10 23:53:26,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-10 23:53:26,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:26,926 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] [2022-01-10 23:53:26,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:53:26,927 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:26,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:26,927 INFO L85 PathProgramCache]: Analyzing trace with hash 811301959, now seen corresponding path program 1 times [2022-01-10 23:53:26,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:26,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885313524] [2022-01-10 23:53:26,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:26,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:27,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:27,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885313524] [2022-01-10 23:53:27,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885313524] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:27,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:27,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:53:27,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000693646] [2022-01-10 23:53:27,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:27,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:53:27,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:27,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:53:27,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:27,007 INFO L87 Difference]: Start difference. First operand 5842 states and 9462 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) [2022-01-10 23:53:28,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:28,794 INFO L93 Difference]: Finished difference Result 17804 states and 28213 transitions. [2022-01-10 23:53:28,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:53:28,794 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 86 [2022-01-10 23:53:28,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:28,818 INFO L225 Difference]: With dead ends: 17804 [2022-01-10 23:53:28,819 INFO L226 Difference]: Without dead ends: 13180 [2022-01-10 23:53:28,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:53:28,827 INFO L933 BasicCegarLoop]: 1740 mSDtfsCounter, 3173 mSDsluCounter, 3911 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3173 SdHoareTripleChecker+Valid, 5651 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:28,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3173 Valid, 5651 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:53:28,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13180 states. [2022-01-10 23:53:29,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13180 to 7294. [2022-01-10 23:53:29,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7294 states, 7288 states have (on average 1.6148463227222831) internal successors, (11769), 7293 states have internal predecessors, (11769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:29,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7294 states to 7294 states and 11769 transitions. [2022-01-10 23:53:29,638 INFO L78 Accepts]: Start accepts. Automaton has 7294 states and 11769 transitions. Word has length 86 [2022-01-10 23:53:29,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:29,639 INFO L470 AbstractCegarLoop]: Abstraction has 7294 states and 11769 transitions. [2022-01-10 23:53:29,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-01-10 23:53:29,639 INFO L276 IsEmpty]: Start isEmpty. Operand 7294 states and 11769 transitions. [2022-01-10 23:53:29,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 23:53:29,644 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:29,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:29,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:53:29,644 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:29,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:29,645 INFO L85 PathProgramCache]: Analyzing trace with hash 15737662, now seen corresponding path program 1 times [2022-01-10 23:53:29,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:29,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988128760] [2022-01-10 23:53:29,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:29,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:29,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:29,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:29,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988128760] [2022-01-10 23:53:29,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988128760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:29,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:29,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:53:29,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424632224] [2022-01-10 23:53:29,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:29,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:53:29,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:29,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:53:29,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:29,722 INFO L87 Difference]: Start difference. First operand 7294 states and 11769 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:32,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:32,170 INFO L93 Difference]: Finished difference Result 22811 states and 36194 transitions. [2022-01-10 23:53:32,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:53:32,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-01-10 23:53:32,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:32,231 INFO L225 Difference]: With dead ends: 22811 [2022-01-10 23:53:32,231 INFO L226 Difference]: Without dead ends: 17899 [2022-01-10 23:53:32,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:53:32,240 INFO L933 BasicCegarLoop]: 2652 mSDtfsCounter, 1918 mSDsluCounter, 5251 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1918 SdHoareTripleChecker+Valid, 7903 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:32,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1918 Valid, 7903 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:53:32,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17899 states. [2022-01-10 23:53:33,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17899 to 7666. [2022-01-10 23:53:33,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7666 states, 7660 states have (on average 1.5865535248041776) internal successors, (12153), 7665 states have internal predecessors, (12153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:33,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7666 states to 7666 states and 12153 transitions. [2022-01-10 23:53:33,092 INFO L78 Accepts]: Start accepts. Automaton has 7666 states and 12153 transitions. Word has length 87 [2022-01-10 23:53:33,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:33,092 INFO L470 AbstractCegarLoop]: Abstraction has 7666 states and 12153 transitions. [2022-01-10 23:53:33,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:33,092 INFO L276 IsEmpty]: Start isEmpty. Operand 7666 states and 12153 transitions. [2022-01-10 23:53:33,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 23:53:33,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:33,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:33,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:53:33,096 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:33,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:33,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1845472179, now seen corresponding path program 1 times [2022-01-10 23:53:33,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:33,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272501307] [2022-01-10 23:53:33,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:33,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:33,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:33,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272501307] [2022-01-10 23:53:33,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272501307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:33,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:33,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 23:53:33,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575113455] [2022-01-10 23:53:33,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:33,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:53:33,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:33,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:53:33,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:53:33,197 INFO L87 Difference]: Start difference. First operand 7666 states and 12153 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:36,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:36,550 INFO L93 Difference]: Finished difference Result 23793 states and 37241 transitions. [2022-01-10 23:53:36,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-10 23:53:36,550 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-01-10 23:53:36,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:36,578 INFO L225 Difference]: With dead ends: 23793 [2022-01-10 23:53:36,578 INFO L226 Difference]: Without dead ends: 19193 [2022-01-10 23:53:36,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=336, Invalid=854, Unknown=0, NotChecked=0, Total=1190 [2022-01-10 23:53:36,588 INFO L933 BasicCegarLoop]: 2510 mSDtfsCounter, 9663 mSDsluCounter, 11912 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9663 SdHoareTripleChecker+Valid, 14422 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:36,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9663 Valid, 14422 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 23:53:36,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19193 states. [2022-01-10 23:53:37,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19193 to 7614. [2022-01-10 23:53:37,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7614 states, 7608 states have (on average 1.5803101997896951) internal successors, (12023), 7613 states have internal predecessors, (12023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:37,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7614 states to 7614 states and 12023 transitions. [2022-01-10 23:53:37,508 INFO L78 Accepts]: Start accepts. Automaton has 7614 states and 12023 transitions. Word has length 87 [2022-01-10 23:53:37,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:37,508 INFO L470 AbstractCegarLoop]: Abstraction has 7614 states and 12023 transitions. [2022-01-10 23:53:37,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:37,509 INFO L276 IsEmpty]: Start isEmpty. Operand 7614 states and 12023 transitions. [2022-01-10 23:53:37,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 23:53:37,513 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:37,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:37,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 23:53:37,513 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:37,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1516772587, now seen corresponding path program 1 times [2022-01-10 23:53:37,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:37,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169826311] [2022-01-10 23:53:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:37,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:37,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:37,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:37,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169826311] [2022-01-10 23:53:37,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169826311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:37,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:37,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:53:37,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663829185] [2022-01-10 23:53:37,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:37,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:53:37,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:37,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:53:37,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:53:37,568 INFO L87 Difference]: Start difference. First operand 7614 states and 12023 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:38,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:38,780 INFO L93 Difference]: Finished difference Result 14046 states and 22085 transitions. [2022-01-10 23:53:38,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:53:38,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-01-10 23:53:38,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:38,793 INFO L225 Difference]: With dead ends: 14046 [2022-01-10 23:53:38,793 INFO L226 Difference]: Without dead ends: 10721 [2022-01-10 23:53:38,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:38,798 INFO L933 BasicCegarLoop]: 1364 mSDtfsCounter, 2319 mSDsluCounter, 1700 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2319 SdHoareTripleChecker+Valid, 3064 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:38,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2319 Valid, 3064 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:53:38,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10721 states. [2022-01-10 23:53:39,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10721 to 7614. [2022-01-10 23:53:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7614 states, 7608 states have (on average 1.5800473186119874) internal successors, (12021), 7613 states have internal predecessors, (12021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:39,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7614 states to 7614 states and 12021 transitions. [2022-01-10 23:53:39,699 INFO L78 Accepts]: Start accepts. Automaton has 7614 states and 12021 transitions. Word has length 87 [2022-01-10 23:53:39,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:39,699 INFO L470 AbstractCegarLoop]: Abstraction has 7614 states and 12021 transitions. [2022-01-10 23:53:39,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:39,700 INFO L276 IsEmpty]: Start isEmpty. Operand 7614 states and 12021 transitions. [2022-01-10 23:53:39,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 23:53:39,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:39,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:39,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 23:53:39,704 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:39,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:39,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1276232458, now seen corresponding path program 1 times [2022-01-10 23:53:39,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:39,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730786130] [2022-01-10 23:53:39,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:39,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:39,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:39,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:39,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730786130] [2022-01-10 23:53:39,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730786130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:39,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:39,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:53:39,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432036400] [2022-01-10 23:53:39,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:39,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:53:39,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:39,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:53:39,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:53:39,789 INFO L87 Difference]: Start difference. First operand 7614 states and 12021 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:43,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:43,386 INFO L93 Difference]: Finished difference Result 25629 states and 40177 transitions. [2022-01-10 23:53:43,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:53:43,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-01-10 23:53:43,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:43,414 INFO L225 Difference]: With dead ends: 25629 [2022-01-10 23:53:43,414 INFO L226 Difference]: Without dead ends: 23145 [2022-01-10 23:53:43,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-01-10 23:53:43,422 INFO L933 BasicCegarLoop]: 3638 mSDtfsCounter, 3495 mSDsluCounter, 8984 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3495 SdHoareTripleChecker+Valid, 12622 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:43,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3495 Valid, 12622 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 23:53:43,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23145 states. [2022-01-10 23:53:44,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23145 to 9556. [2022-01-10 23:53:44,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9556 states, 9550 states have (on average 1.5757068062827224) internal successors, (15048), 9555 states have internal predecessors, (15048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:44,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9556 states to 9556 states and 15048 transitions. [2022-01-10 23:53:44,643 INFO L78 Accepts]: Start accepts. Automaton has 9556 states and 15048 transitions. Word has length 87 [2022-01-10 23:53:44,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:44,643 INFO L470 AbstractCegarLoop]: Abstraction has 9556 states and 15048 transitions. [2022-01-10 23:53:44,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:44,643 INFO L276 IsEmpty]: Start isEmpty. Operand 9556 states and 15048 transitions. [2022-01-10 23:53:44,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 23:53:44,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:44,650 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:44,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 23:53:44,650 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:44,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:44,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1214698146, now seen corresponding path program 1 times [2022-01-10 23:53:44,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:44,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284437704] [2022-01-10 23:53:44,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:44,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:44,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:44,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:44,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284437704] [2022-01-10 23:53:44,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284437704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:44,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:44,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:53:44,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107254470] [2022-01-10 23:53:44,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:44,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:53:44,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:44,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:53:44,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:53:44,734 INFO L87 Difference]: Start difference. First operand 9556 states and 15048 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:47,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:53:47,535 INFO L93 Difference]: Finished difference Result 23938 states and 37276 transitions. [2022-01-10 23:53:47,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:53:47,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 23:53:47,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:53:47,560 INFO L225 Difference]: With dead ends: 23938 [2022-01-10 23:53:47,560 INFO L226 Difference]: Without dead ends: 17000 [2022-01-10 23:53:47,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:53:47,571 INFO L933 BasicCegarLoop]: 2201 mSDtfsCounter, 896 mSDsluCounter, 3212 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 5413 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:53:47,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [896 Valid, 5413 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:53:47,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17000 states. [2022-01-10 23:53:48,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17000 to 8429. [2022-01-10 23:53:48,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8429 states, 8423 states have (on average 1.5616763623412087) internal successors, (13154), 8428 states have internal predecessors, (13154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:48,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8429 states to 8429 states and 13154 transitions. [2022-01-10 23:53:48,733 INFO L78 Accepts]: Start accepts. Automaton has 8429 states and 13154 transitions. Word has length 88 [2022-01-10 23:53:48,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:53:48,734 INFO L470 AbstractCegarLoop]: Abstraction has 8429 states and 13154 transitions. [2022-01-10 23:53:48,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:53:48,734 INFO L276 IsEmpty]: Start isEmpty. Operand 8429 states and 13154 transitions. [2022-01-10 23:53:48,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 23:53:48,738 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:53:48,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:53:48,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 23:53:48,738 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:53:48,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:53:48,739 INFO L85 PathProgramCache]: Analyzing trace with hash 2089878065, now seen corresponding path program 1 times [2022-01-10 23:53:48,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:53:48,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014483867] [2022-01-10 23:53:48,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:53:48,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:53:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:53:48,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:53:48,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:53:48,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014483867] [2022-01-10 23:53:48,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014483867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:53:48,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:53:48,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 23:53:48,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690715965] [2022-01-10 23:53:48,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:53:48,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:53:48,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:53:48,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:53:48,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:53:48,849 INFO L87 Difference]: Start difference. First operand 8429 states and 13154 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:03,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:54:03,787 INFO L93 Difference]: Finished difference Result 87650 states and 134323 transitions. [2022-01-10 23:54:03,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-10 23:54:03,788 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 23:54:03,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:54:03,926 INFO L225 Difference]: With dead ends: 87650 [2022-01-10 23:54:03,926 INFO L226 Difference]: Without dead ends: 82356 [2022-01-10 23:54:03,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=419, Invalid=987, Unknown=0, NotChecked=0, Total=1406 [2022-01-10 23:54:03,954 INFO L933 BasicCegarLoop]: 1463 mSDtfsCounter, 20249 mSDsluCounter, 14480 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20249 SdHoareTripleChecker+Valid, 15943 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:54:03,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20249 Valid, 15943 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-10 23:54:04,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82356 states. [2022-01-10 23:54:08,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82356 to 24051. [2022-01-10 23:54:08,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24051 states, 24045 states have (on average 1.5491786234144314) internal successors, (37250), 24050 states have internal predecessors, (37250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:08,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24051 states to 24051 states and 37250 transitions. [2022-01-10 23:54:08,205 INFO L78 Accepts]: Start accepts. Automaton has 24051 states and 37250 transitions. Word has length 88 [2022-01-10 23:54:08,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:54:08,205 INFO L470 AbstractCegarLoop]: Abstraction has 24051 states and 37250 transitions. [2022-01-10 23:54:08,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 9 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:54:08,205 INFO L276 IsEmpty]: Start isEmpty. Operand 24051 states and 37250 transitions. [2022-01-10 23:54:08,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 23:54:08,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:54:08,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:54:08,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 23:54:08,218 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:54:08,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:54:08,219 INFO L85 PathProgramCache]: Analyzing trace with hash -168582722, now seen corresponding path program 1 times [2022-01-10 23:54:08,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:54:08,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735655996] [2022-01-10 23:54:08,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:54:08,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:54:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:54:08,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:54:08,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:54:08,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735655996] [2022-01-10 23:54:08,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735655996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:54:08,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:54:08,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 23:54:08,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942170150] [2022-01-10 23:54:08,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:54:08,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 23:54:08,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:54:08,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 23:54:08,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 23:54:08,523 INFO L87 Difference]: Start difference. First operand 24051 states and 37250 transitions. Second operand has 10 states, 10 states have (on average 8.9) internal successors, (89), 9 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)