/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_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:29:05,772 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:29:05,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:29:05,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:29:05,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:29:05,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:29:05,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:29:05,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:29:05,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:29:05,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:29:05,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:29:05,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:29:05,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:29:05,844 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:29:05,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:29:05,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:29:05,848 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:29:05,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:29:05,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:29:05,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:29:05,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:29:05,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:29:05,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:29:05,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:29:05,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:29:05,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:29:05,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:29:05,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:29:05,865 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:29:05,866 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:29:05,866 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:29:05,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:29:05,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:29:05,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:29:05,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:29:05,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:29:05,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:29:05,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:29:05,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:29:05,869 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:29:05,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:29:05,871 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:29:05,899 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:29:05,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:29:05,900 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:29:05,900 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:29:05,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:29:05,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:29:05,901 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:29:05,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:29:05,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:29:05,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:29:05,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:29:05,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:29:05,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:29:05,902 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:29:05,902 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:29:05,902 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:29:05,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:29:05,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:29:05,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:29:05,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:29:05,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:29:05,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:29:05,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:29:05,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:29:05,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:29:05,903 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:29:05,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:29:05,903 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:29:05,903 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:29:05,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:29:05,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:29:05,904 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:29:05,904 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:29:05,904 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:29:06,056 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:29:06,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:29:06,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:29:06,074 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:29:06,074 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:29:06,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_productSimulator.cil.c [2022-01-10 12:29:06,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ed210c66/bea35ad13202482abcda100a647f84e4/FLAG5b6c1680b [2022-01-10 12:29:06,531 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:29:06,531 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_productSimulator.cil.c [2022-01-10 12:29:06,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ed210c66/bea35ad13202482abcda100a647f84e4/FLAG5b6c1680b [2022-01-10 12:29:06,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ed210c66/bea35ad13202482abcda100a647f84e4 [2022-01-10 12:29:06,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:29:06,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:29:06,556 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:29:06,556 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:29:06,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:29:06,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:29:06" (1/1) ... [2022-01-10 12:29:06,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22547eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:06, skipping insertion in model container [2022-01-10 12:29:06,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:29:06" (1/1) ... [2022-01-10 12:29:06,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:29:06,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:29:06,774 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/minepump_spec5_productSimulator.cil.c[5724,5737] [2022-01-10 12:29:06,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:29:06,876 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:29:06,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:29:06,898 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/minepump_spec5_productSimulator.cil.c[5724,5737] [2022-01-10 12:29:06,930 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:29:06,938 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:29:06,961 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/minepump_spec5_productSimulator.cil.c[5724,5737] [2022-01-10 12:29:06,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:29:06,991 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:29:06,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:06 WrapperNode [2022-01-10 12:29:06,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:29:06,992 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:29:06,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:29:06,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:29:06,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:06" (1/1) ... [2022-01-10 12:29:07,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:06" (1/1) ... [2022-01-10 12:29:07,055 INFO L137 Inliner]: procedures = 67, calls = 180, calls flagged for inlining = 77, calls inlined = 456, statements flattened = 2773 [2022-01-10 12:29:07,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:29:07,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:29:07,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:29:07,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:29:07,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:06" (1/1) ... [2022-01-10 12:29:07,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:06" (1/1) ... [2022-01-10 12:29:07,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:06" (1/1) ... [2022-01-10 12:29:07,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:06" (1/1) ... [2022-01-10 12:29:07,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:06" (1/1) ... [2022-01-10 12:29:07,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:06" (1/1) ... [2022-01-10 12:29:07,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:06" (1/1) ... [2022-01-10 12:29:07,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:29:07,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:29:07,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:29:07,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:29:07,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:06" (1/1) ... [2022-01-10 12:29:07,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:29:07,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:29:07,227 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 12:29:07,246 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 12:29:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:29:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:29:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:29:07,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:29:07,375 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:29:07,376 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:29:08,265 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:29:08,274 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:29:08,274 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 12:29:08,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:29:08 BoogieIcfgContainer [2022-01-10 12:29:08,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:29:08,277 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:29:08,277 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:29:08,278 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:29:08,280 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:29:08" (1/1) ... [2022-01-10 12:29:08,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:29:08 BasicIcfg [2022-01-10 12:29:08,414 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:29:08,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:29:08,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:29:08,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:29:08,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:29:06" (1/4) ... [2022-01-10 12:29:08,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52277c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:29:08, skipping insertion in model container [2022-01-10 12:29:08,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:29:06" (2/4) ... [2022-01-10 12:29:08,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52277c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:29:08, skipping insertion in model container [2022-01-10 12:29:08,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:29:08" (3/4) ... [2022-01-10 12:29:08,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52277c9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:29:08, skipping insertion in model container [2022-01-10 12:29:08,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:29:08" (4/4) ... [2022-01-10 12:29:08,419 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_productSimulator.cil.cTransformedIcfg [2022-01-10 12:29:08,422 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:29:08,423 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 12:29:08,449 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:29:08,453 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 12:29:08,453 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 12:29:08,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 779 states, 775 states have (on average 1.3496774193548386) internal successors, (1046), 778 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states 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 12:29:08,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 12:29:08,474 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:08,475 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] [2022-01-10 12:29:08,475 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:08,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:08,482 INFO L85 PathProgramCache]: Analyzing trace with hash -464726453, now seen corresponding path program 1 times [2022-01-10 12:29:08,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:08,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801450405] [2022-01-10 12:29:08,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:08,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:08,736 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 12:29:08,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:08,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801450405] [2022-01-10 12:29:08,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801450405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:29:08,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:29:08,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:29:08,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293227214] [2022-01-10 12:29:08,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:29:08,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:29:08,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:08,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:29:08,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:29:08,768 INFO L87 Difference]: Start difference. First operand has 779 states, 775 states have (on average 1.3496774193548386) internal successors, (1046), 778 states have internal predecessors, (1046), 0 states have call successors, (0), 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 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states 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 12:29:08,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:08,850 INFO L93 Difference]: Finished difference Result 1541 states and 2074 transitions. [2022-01-10 12:29:08,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:29:08,851 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2022-01-10 12:29:08,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:08,867 INFO L225 Difference]: With dead ends: 1541 [2022-01-10 12:29:08,867 INFO L226 Difference]: Without dead ends: 769 [2022-01-10 12:29:08,875 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 12:29:08,880 INFO L933 BasicCegarLoop]: 1036 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, 1036 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 12:29:08,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1036 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:29:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-01-10 12:29:08,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 769. [2022-01-10 12:29:08,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 766 states have (on average 1.3420365535248042) internal successors, (1028), 768 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states 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 12:29:08,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1028 transitions. [2022-01-10 12:29:08,946 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1028 transitions. Word has length 27 [2022-01-10 12:29:08,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:08,946 INFO L470 AbstractCegarLoop]: Abstraction has 769 states and 1028 transitions. [2022-01-10 12:29:08,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states 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 12:29:08,946 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1028 transitions. [2022-01-10 12:29:08,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 12:29:08,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:08,947 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] [2022-01-10 12:29:08,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:29:08,948 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:08,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:08,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1810715015, now seen corresponding path program 1 times [2022-01-10 12:29:08,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:08,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957282244] [2022-01-10 12:29:08,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:08,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:09,024 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 12:29:09,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:09,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957282244] [2022-01-10 12:29:09,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957282244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:29:09,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:29:09,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:29:09,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531908623] [2022-01-10 12:29:09,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:29:09,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:29:09,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:09,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:29:09,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:29:09,026 INFO L87 Difference]: Start difference. First operand 769 states and 1028 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 12:29:09,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:09,130 INFO L93 Difference]: Finished difference Result 1596 states and 2139 transitions. [2022-01-10 12:29:09,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:29:09,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-01-10 12:29:09,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:09,133 INFO L225 Difference]: With dead ends: 1596 [2022-01-10 12:29:09,133 INFO L226 Difference]: Without dead ends: 841 [2022-01-10 12:29:09,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 12:29:09,135 INFO L933 BasicCegarLoop]: 1037 mSDtfsCounter, 1002 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:09,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1002 Valid, 1127 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:29:09,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-01-10 12:29:09,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 832. [2022-01-10 12:29:09,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 832 states, 829 states have (on average 1.344993968636912) internal successors, (1115), 831 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states 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 12:29:09,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1115 transitions. [2022-01-10 12:29:09,183 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1115 transitions. Word has length 28 [2022-01-10 12:29:09,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:09,184 INFO L470 AbstractCegarLoop]: Abstraction has 832 states and 1115 transitions. [2022-01-10 12:29:09,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states 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 12:29:09,186 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1115 transitions. [2022-01-10 12:29:09,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 12:29:09,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:09,192 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] [2022-01-10 12:29:09,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:29:09,192 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:09,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:09,193 INFO L85 PathProgramCache]: Analyzing trace with hash 4895176, now seen corresponding path program 1 times [2022-01-10 12:29:09,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:09,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357943779] [2022-01-10 12:29:09,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:09,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:09,260 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 12:29:09,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:09,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357943779] [2022-01-10 12:29:09,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357943779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:29:09,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:29:09,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:29:09,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537792065] [2022-01-10 12:29:09,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:29:09,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:29:09,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:09,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:29:09,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:29:09,262 INFO L87 Difference]: Start difference. First operand 832 states and 1115 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 12:29:09,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:09,760 INFO L93 Difference]: Finished difference Result 3392 states and 4461 transitions. [2022-01-10 12:29:09,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:29:09,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2022-01-10 12:29:09,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:09,767 INFO L225 Difference]: With dead ends: 3392 [2022-01-10 12:29:09,768 INFO L226 Difference]: Without dead ends: 2574 [2022-01-10 12:29:09,772 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 12:29:09,774 INFO L933 BasicCegarLoop]: 1785 mSDtfsCounter, 2873 mSDsluCounter, 3374 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2873 SdHoareTripleChecker+Valid, 5159 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:09,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2873 Valid, 5159 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:29:09,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-01-10 12:29:09,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 927. [2022-01-10 12:29:09,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 924 states have (on average 1.2738095238095237) internal successors, (1177), 926 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states 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 12:29:09,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1177 transitions. [2022-01-10 12:29:09,840 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1177 transitions. Word has length 35 [2022-01-10 12:29:09,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:09,840 INFO L470 AbstractCegarLoop]: Abstraction has 927 states and 1177 transitions. [2022-01-10 12:29:09,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states 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 12:29:09,841 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1177 transitions. [2022-01-10 12:29:09,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 12:29:09,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:09,843 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] [2022-01-10 12:29:09,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:29:09,844 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:09,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:09,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1178833264, now seen corresponding path program 1 times [2022-01-10 12:29:09,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:09,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404725277] [2022-01-10 12:29:09,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:09,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:09,940 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 12:29:09,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:09,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404725277] [2022-01-10 12:29:09,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404725277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:29:09,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:29:09,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:29:09,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409814735] [2022-01-10 12:29:09,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:29:09,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:29:09,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:09,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:29:09,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:29:09,945 INFO L87 Difference]: Start difference. First operand 927 states and 1177 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:29:10,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:10,320 INFO L93 Difference]: Finished difference Result 2400 states and 3020 transitions. [2022-01-10 12:29:10,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:29:10,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-10 12:29:10,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:10,324 INFO L225 Difference]: With dead ends: 2400 [2022-01-10 12:29:10,324 INFO L226 Difference]: Without dead ends: 1487 [2022-01-10 12:29:10,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 12:29:10,333 INFO L933 BasicCegarLoop]: 1041 mSDtfsCounter, 1037 mSDsluCounter, 2767 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 3808 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:10,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1037 Valid, 3808 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:29:10,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2022-01-10 12:29:10,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 999. [2022-01-10 12:29:10,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 996 states have (on average 1.2540160642570282) internal successors, (1249), 998 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states 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 12:29:10,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1249 transitions. [2022-01-10 12:29:10,385 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1249 transitions. Word has length 45 [2022-01-10 12:29:10,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:10,386 INFO L470 AbstractCegarLoop]: Abstraction has 999 states and 1249 transitions. [2022-01-10 12:29:10,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:29:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1249 transitions. [2022-01-10 12:29:10,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 12:29:10,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:10,387 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] [2022-01-10 12:29:10,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:29:10,387 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:10,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:10,388 INFO L85 PathProgramCache]: Analyzing trace with hash 2119061679, now seen corresponding path program 1 times [2022-01-10 12:29:10,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:10,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837696868] [2022-01-10 12:29:10,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:10,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:10,423 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 12:29:10,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:10,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837696868] [2022-01-10 12:29:10,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837696868] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:29:10,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:29:10,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:29:10,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556377489] [2022-01-10 12:29:10,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:29:10,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:29:10,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:10,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:29:10,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:29:10,424 INFO L87 Difference]: Start difference. First operand 999 states and 1249 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:29:10,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:10,707 INFO L93 Difference]: Finished difference Result 2628 states and 3248 transitions. [2022-01-10 12:29:10,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:29:10,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-10 12:29:10,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:10,712 INFO L225 Difference]: With dead ends: 2628 [2022-01-10 12:29:10,712 INFO L226 Difference]: Without dead ends: 1643 [2022-01-10 12:29:10,714 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 12:29:10,714 INFO L933 BasicCegarLoop]: 1050 mSDtfsCounter, 984 mSDsluCounter, 1797 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 2847 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:10,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 2847 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:29:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2022-01-10 12:29:10,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1047. [2022-01-10 12:29:10,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1044 states have (on average 1.2423371647509578) internal successors, (1297), 1046 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states 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 12:29:10,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1297 transitions. [2022-01-10 12:29:10,786 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1297 transitions. Word has length 45 [2022-01-10 12:29:10,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:10,790 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 1297 transitions. [2022-01-10 12:29:10,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:29:10,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1297 transitions. [2022-01-10 12:29:10,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 12:29:10,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:10,791 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:29:10,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:29:10,791 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:10,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:10,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1710237454, now seen corresponding path program 1 times [2022-01-10 12:29:10,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:10,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691433728] [2022-01-10 12:29:10,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:10,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:10,871 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 12:29:10,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:10,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691433728] [2022-01-10 12:29:10,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691433728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:29:10,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:29:10,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:29:10,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885545514] [2022-01-10 12:29:10,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:29:10,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:29:10,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:10,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:29:10,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:29:10,873 INFO L87 Difference]: Start difference. First operand 1047 states and 1297 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:29:11,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:11,074 INFO L93 Difference]: Finished difference Result 2370 states and 2930 transitions. [2022-01-10 12:29:11,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:29:11,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-01-10 12:29:11,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:11,078 INFO L225 Difference]: With dead ends: 2370 [2022-01-10 12:29:11,078 INFO L226 Difference]: Without dead ends: 1163 [2022-01-10 12:29:11,080 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 12:29:11,080 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 260 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:11,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 1691 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:29:11,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2022-01-10 12:29:11,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1163. [2022-01-10 12:29:11,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 1160 states have (on average 1.2387931034482758) internal successors, (1437), 1162 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states 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 12:29:11,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1437 transitions. [2022-01-10 12:29:11,137 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1437 transitions. Word has length 45 [2022-01-10 12:29:11,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:11,137 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 1437 transitions. [2022-01-10 12:29:11,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states 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 12:29:11,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1437 transitions. [2022-01-10 12:29:11,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 12:29:11,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:11,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:29:11,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:29:11,138 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:11,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:11,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1426553626, now seen corresponding path program 1 times [2022-01-10 12:29:11,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:11,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743453729] [2022-01-10 12:29:11,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:11,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:11,219 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 12:29:11,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:11,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743453729] [2022-01-10 12:29:11,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743453729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:29:11,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:29:11,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:29:11,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528899345] [2022-01-10 12:29:11,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:29:11,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:29:11,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:11,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:29:11,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:29:11,221 INFO L87 Difference]: Start difference. First operand 1163 states and 1437 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:29:11,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:11,871 INFO L93 Difference]: Finished difference Result 5484 states and 6789 transitions. [2022-01-10 12:29:11,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 12:29:11,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-10 12:29:11,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:11,882 INFO L225 Difference]: With dead ends: 5484 [2022-01-10 12:29:11,882 INFO L226 Difference]: Without dead ends: 3923 [2022-01-10 12:29:11,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:29:11,885 INFO L933 BasicCegarLoop]: 1384 mSDtfsCounter, 4365 mSDsluCounter, 4242 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4365 SdHoareTripleChecker+Valid, 5626 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:11,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4365 Valid, 5626 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:29:11,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3923 states. [2022-01-10 12:29:12,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3923 to 1948. [2022-01-10 12:29:12,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1945 states have (on average 1.2231362467866325) internal successors, (2379), 1947 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states 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 12:29:12,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2379 transitions. [2022-01-10 12:29:12,025 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2379 transitions. Word has length 54 [2022-01-10 12:29:12,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:12,026 INFO L470 AbstractCegarLoop]: Abstraction has 1948 states and 2379 transitions. [2022-01-10 12:29:12,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:29:12,026 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2379 transitions. [2022-01-10 12:29:12,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 12:29:12,027 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:12,027 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:29:12,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:29:12,027 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:12,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:12,028 INFO L85 PathProgramCache]: Analyzing trace with hash 438601021, now seen corresponding path program 1 times [2022-01-10 12:29:12,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:12,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141547178] [2022-01-10 12:29:12,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:12,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:29:12,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:12,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141547178] [2022-01-10 12:29:12,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141547178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:29:12,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:29:12,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:29:12,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320522638] [2022-01-10 12:29:12,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:29:12,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:29:12,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:29:12,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:29:12,066 INFO L87 Difference]: Start difference. First operand 1948 states and 2379 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 12:29:12,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:12,194 INFO L93 Difference]: Finished difference Result 1948 states and 2379 transitions. [2022-01-10 12:29:12,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:29:12,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-01-10 12:29:12,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:12,197 INFO L225 Difference]: With dead ends: 1948 [2022-01-10 12:29:12,197 INFO L226 Difference]: Without dead ends: 839 [2022-01-10 12:29:12,198 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 12:29:12,198 INFO L933 BasicCegarLoop]: 324 mSDtfsCounter, 273 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:12,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 337 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:29:12,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-01-10 12:29:12,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 839. [2022-01-10 12:29:12,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 838 states have (on average 1.2422434367541766) internal successors, (1041), 838 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states 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 12:29:12,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1041 transitions. [2022-01-10 12:29:12,283 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1041 transitions. Word has length 75 [2022-01-10 12:29:12,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:12,283 INFO L470 AbstractCegarLoop]: Abstraction has 839 states and 1041 transitions. [2022-01-10 12:29:12,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 12:29:12,283 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1041 transitions. [2022-01-10 12:29:12,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 12:29:12,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:12,284 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:29:12,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:29:12,285 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:12,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:12,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1819083183, now seen corresponding path program 1 times [2022-01-10 12:29:12,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:12,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751689905] [2022-01-10 12:29:12,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:12,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:12,320 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:29:12,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:12,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751689905] [2022-01-10 12:29:12,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751689905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:29:12,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:29:12,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:29:12,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112482454] [2022-01-10 12:29:12,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:29:12,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:29:12,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:12,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:29:12,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:29:12,322 INFO L87 Difference]: Start difference. First operand 839 states and 1041 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:29:12,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:12,437 INFO L93 Difference]: Finished difference Result 1800 states and 2250 transitions. [2022-01-10 12:29:12,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:29:12,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-01-10 12:29:12,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:12,440 INFO L225 Difference]: With dead ends: 1800 [2022-01-10 12:29:12,441 INFO L226 Difference]: Without dead ends: 975 [2022-01-10 12:29:12,442 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 12:29:12,442 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 254 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:12,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [254 Valid, 449 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:29:12,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-01-10 12:29:12,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 975. [2022-01-10 12:29:12,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 1.23305954825462) internal successors, (1201), 974 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states 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 12:29:12,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1201 transitions. [2022-01-10 12:29:12,538 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1201 transitions. Word has length 82 [2022-01-10 12:29:12,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:12,538 INFO L470 AbstractCegarLoop]: Abstraction has 975 states and 1201 transitions. [2022-01-10 12:29:12,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:29:12,539 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1201 transitions. [2022-01-10 12:29:12,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 12:29:12,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:12,540 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:29:12,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:29:12,540 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:12,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:12,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1128805923, now seen corresponding path program 1 times [2022-01-10 12:29:12,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:12,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870569383] [2022-01-10 12:29:12,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:12,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:12,588 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:29:12,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:12,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870569383] [2022-01-10 12:29:12,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870569383] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:29:12,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097577368] [2022-01-10 12:29:12,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:12,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:29:12,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:29:12,612 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:29:12,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 12:29:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:12,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 12:29:12,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:29:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:29:12,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:29:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:29:13,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097577368] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:29:13,029 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:29:13,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2022-01-10 12:29:13,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871288934] [2022-01-10 12:29:13,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:29:13,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:29:13,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:13,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:29:13,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:29:13,031 INFO L87 Difference]: Start difference. First operand 975 states and 1201 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:29:13,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:13,187 INFO L93 Difference]: Finished difference Result 1859 states and 2317 transitions. [2022-01-10 12:29:13,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:29:13,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-10 12:29:13,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:13,191 INFO L225 Difference]: With dead ends: 1859 [2022-01-10 12:29:13,191 INFO L226 Difference]: Without dead ends: 1056 [2022-01-10 12:29:13,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 170 SyntacticMatches, 1 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 12:29:13,192 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 353 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:13,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 1040 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:29:13,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2022-01-10 12:29:13,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 849. [2022-01-10 12:29:13,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 848 states have (on average 1.221698113207547) internal successors, (1036), 848 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states 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 12:29:13,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1036 transitions. [2022-01-10 12:29:13,266 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1036 transitions. Word has length 84 [2022-01-10 12:29:13,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:13,266 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 1036 transitions. [2022-01-10 12:29:13,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:29:13,266 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1036 transitions. [2022-01-10 12:29:13,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 12:29:13,271 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:13,271 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:29:13,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 12:29:13,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-01-10 12:29:13,495 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:13,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:13,496 INFO L85 PathProgramCache]: Analyzing trace with hash -346207430, now seen corresponding path program 1 times [2022-01-10 12:29:13,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:13,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572692677] [2022-01-10 12:29:13,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:13,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-01-10 12:29:13,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:13,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572692677] [2022-01-10 12:29:13,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572692677] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:29:13,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:29:13,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:29:13,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165864564] [2022-01-10 12:29:13,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:29:13,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:29:13,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:13,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:29:13,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:29:13,549 INFO L87 Difference]: Start difference. First operand 849 states and 1036 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 12:29:13,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:13,662 INFO L93 Difference]: Finished difference Result 2079 states and 2572 transitions. [2022-01-10 12:29:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:29:13,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 149 [2022-01-10 12:29:13,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:13,667 INFO L225 Difference]: With dead ends: 2079 [2022-01-10 12:29:13,667 INFO L226 Difference]: Without dead ends: 1244 [2022-01-10 12:29:13,668 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 12:29:13,668 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 91 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:13,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 417 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:29:13,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2022-01-10 12:29:13,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1242. [2022-01-10 12:29:13,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 1241 states have (on average 1.242546333601934) internal successors, (1542), 1241 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states 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 12:29:13,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1542 transitions. [2022-01-10 12:29:13,762 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1542 transitions. Word has length 149 [2022-01-10 12:29:13,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:13,762 INFO L470 AbstractCegarLoop]: Abstraction has 1242 states and 1542 transitions. [2022-01-10 12:29:13,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 12:29:13,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1542 transitions. [2022-01-10 12:29:13,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-10 12:29:13,764 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:13,764 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:29:13,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:29:13,765 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:13,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:13,765 INFO L85 PathProgramCache]: Analyzing trace with hash 433119491, now seen corresponding path program 1 times [2022-01-10 12:29:13,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:13,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600908698] [2022-01-10 12:29:13,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:13,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:13,820 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-01-10 12:29:13,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:13,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600908698] [2022-01-10 12:29:13,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600908698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:29:13,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:29:13,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:29:13,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574533769] [2022-01-10 12:29:13,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:29:13,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:29:13,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:13,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:29:13,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:29:13,821 INFO L87 Difference]: Start difference. First operand 1242 states and 1542 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 12:29:13,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:13,980 INFO L93 Difference]: Finished difference Result 3314 states and 4162 transitions. [2022-01-10 12:29:13,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:29:13,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 153 [2022-01-10 12:29:13,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:13,985 INFO L225 Difference]: With dead ends: 3314 [2022-01-10 12:29:13,985 INFO L226 Difference]: Without dead ends: 2086 [2022-01-10 12:29:13,987 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 12:29:13,988 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 89 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:13,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 431 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:29:13,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2086 states. [2022-01-10 12:29:14,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2086 to 2084. [2022-01-10 12:29:14,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2083 states have (on average 1.257321171387422) internal successors, (2619), 2083 states have internal predecessors, (2619), 0 states have call successors, (0), 0 states 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 12:29:14,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2619 transitions. [2022-01-10 12:29:14,133 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2619 transitions. Word has length 153 [2022-01-10 12:29:14,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:14,134 INFO L470 AbstractCegarLoop]: Abstraction has 2084 states and 2619 transitions. [2022-01-10 12:29:14,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 12:29:14,134 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2619 transitions. [2022-01-10 12:29:14,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-10 12:29:14,137 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:14,137 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:29:14,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:29:14,138 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:14,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:14,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1610958559, now seen corresponding path program 1 times [2022-01-10 12:29:14,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:14,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338321611] [2022-01-10 12:29:14,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:14,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:14,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:14,183 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-01-10 12:29:14,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:14,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338321611] [2022-01-10 12:29:14,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338321611] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:29:14,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:29:14,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:29:14,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67388999] [2022-01-10 12:29:14,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:29:14,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:29:14,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:14,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:29:14,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:29:14,185 INFO L87 Difference]: Start difference. First operand 2084 states and 2619 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 12:29:14,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:14,344 INFO L93 Difference]: Finished difference Result 4194 states and 5264 transitions. [2022-01-10 12:29:14,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:29:14,345 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 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 155 [2022-01-10 12:29:14,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:14,350 INFO L225 Difference]: With dead ends: 4194 [2022-01-10 12:29:14,350 INFO L226 Difference]: Without dead ends: 2124 [2022-01-10 12:29:14,352 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 12:29:14,353 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 32 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:14,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 479 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:29:14,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2124 states. [2022-01-10 12:29:14,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2124 to 2084. [2022-01-10 12:29:14,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 2083 states have (on average 1.2477196351416227) internal successors, (2599), 2083 states have internal predecessors, (2599), 0 states have call successors, (0), 0 states 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 12:29:14,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2599 transitions. [2022-01-10 12:29:14,504 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2599 transitions. Word has length 155 [2022-01-10 12:29:14,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:14,504 INFO L470 AbstractCegarLoop]: Abstraction has 2084 states and 2599 transitions. [2022-01-10 12:29:14,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states 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 12:29:14,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2599 transitions. [2022-01-10 12:29:14,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 12:29:14,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:14,508 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:29:14,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:29:14,508 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:14,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:14,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1692135493, now seen corresponding path program 1 times [2022-01-10 12:29:14,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:14,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150001400] [2022-01-10 12:29:14,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:14,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:14,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-10 12:29:14,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:14,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150001400] [2022-01-10 12:29:14,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150001400] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:29:14,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:29:14,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:29:14,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859777777] [2022-01-10 12:29:14,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:29:14,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:29:14,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:14,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:29:14,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:29:14,571 INFO L87 Difference]: Start difference. First operand 2084 states and 2599 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:29:14,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:14,749 INFO L93 Difference]: Finished difference Result 3191 states and 3983 transitions. [2022-01-10 12:29:14,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:29:14,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2022-01-10 12:29:14,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:14,755 INFO L225 Difference]: With dead ends: 3191 [2022-01-10 12:29:14,755 INFO L226 Difference]: Without dead ends: 2181 [2022-01-10 12:29:14,756 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 12:29:14,757 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 87 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:14,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 416 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:29:14,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2181 states. [2022-01-10 12:29:14,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2181 to 2179. [2022-01-10 12:29:14,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2179 states, 2178 states have (on average 1.2442607897153353) internal successors, (2710), 2178 states have internal predecessors, (2710), 0 states have call successors, (0), 0 states 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 12:29:14,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2179 states to 2179 states and 2710 transitions. [2022-01-10 12:29:14,908 INFO L78 Accepts]: Start accepts. Automaton has 2179 states and 2710 transitions. Word has length 156 [2022-01-10 12:29:14,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:14,908 INFO L470 AbstractCegarLoop]: Abstraction has 2179 states and 2710 transitions. [2022-01-10 12:29:14,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:29:14,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2179 states and 2710 transitions. [2022-01-10 12:29:14,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 12:29:14,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:14,912 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:29:14,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:29:14,912 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:14,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:14,913 INFO L85 PathProgramCache]: Analyzing trace with hash -512598036, now seen corresponding path program 1 times [2022-01-10 12:29:14,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:14,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967922572] [2022-01-10 12:29:14,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:14,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:14,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:15,011 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 12:29:15,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:15,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967922572] [2022-01-10 12:29:15,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967922572] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:29:15,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360971993] [2022-01-10 12:29:15,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:15,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:29:15,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:29:15,012 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:29:15,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 12:29:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:15,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-10 12:29:15,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:29:15,443 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-01-10 12:29:15,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:29:15,693 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-01-10 12:29:15,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360971993] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:29:15,694 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:29:15,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2022-01-10 12:29:15,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333113453] [2022-01-10 12:29:15,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:29:15,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 12:29:15,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:15,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 12:29:15,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:29:15,695 INFO L87 Difference]: Start difference. First operand 2179 states and 2710 transitions. Second operand has 13 states, 13 states have (on average 17.846153846153847) internal successors, (232), 13 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 12:29:18,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:18,227 INFO L93 Difference]: Finished difference Result 20471 states and 25480 transitions. [2022-01-10 12:29:18,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-10 12:29:18,228 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.846153846153847) internal successors, (232), 13 states have internal predecessors, (232), 0 states have call successors, (0), 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 158 [2022-01-10 12:29:18,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:18,270 INFO L225 Difference]: With dead ends: 20471 [2022-01-10 12:29:18,270 INFO L226 Difference]: Without dead ends: 16523 [2022-01-10 12:29:18,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1481 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=909, Invalid=3921, Unknown=0, NotChecked=0, Total=4830 [2022-01-10 12:29:18,280 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 5664 mSDsluCounter, 5523 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5664 SdHoareTripleChecker+Valid, 6122 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:18,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5664 Valid, 6122 Invalid, 1050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 12:29:18,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16523 states. [2022-01-10 12:29:18,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16523 to 5316. [2022-01-10 12:29:18,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 5315 states have (on average 1.2214487300094072) internal successors, (6492), 5315 states have internal predecessors, (6492), 0 states have call successors, (0), 0 states 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 12:29:18,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 6492 transitions. [2022-01-10 12:29:18,789 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 6492 transitions. Word has length 158 [2022-01-10 12:29:18,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:18,789 INFO L470 AbstractCegarLoop]: Abstraction has 5316 states and 6492 transitions. [2022-01-10 12:29:18,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.846153846153847) internal successors, (232), 13 states have internal predecessors, (232), 0 states have call successors, (0), 0 states 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 12:29:18,789 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 6492 transitions. [2022-01-10 12:29:18,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 12:29:18,796 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:18,796 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:29:18,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 12:29:19,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-10 12:29:19,031 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:19,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:19,031 INFO L85 PathProgramCache]: Analyzing trace with hash 951492315, now seen corresponding path program 1 times [2022-01-10 12:29:19,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:19,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640224824] [2022-01-10 12:29:19,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:19,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:19,089 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-10 12:29:19,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:19,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640224824] [2022-01-10 12:29:19,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640224824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:29:19,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:29:19,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:29:19,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555453402] [2022-01-10 12:29:19,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:29:19,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:29:19,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:19,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:29:19,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:29:19,091 INFO L87 Difference]: Start difference. First operand 5316 states and 6492 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 12:29:20,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:20,065 INFO L93 Difference]: Finished difference Result 14848 states and 18160 transitions. [2022-01-10 12:29:20,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:29:20,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 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 162 [2022-01-10 12:29:20,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:20,080 INFO L225 Difference]: With dead ends: 14848 [2022-01-10 12:29:20,080 INFO L226 Difference]: Without dead ends: 9580 [2022-01-10 12:29:20,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-10 12:29:20,085 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 882 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:20,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [882 Valid, 2264 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:29:20,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9580 states. [2022-01-10 12:29:20,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9580 to 5194. [2022-01-10 12:29:20,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5194 states, 5193 states have (on average 1.2085499711149625) internal successors, (6276), 5193 states have internal predecessors, (6276), 0 states have call successors, (0), 0 states 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 12:29:20,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5194 states to 5194 states and 6276 transitions. [2022-01-10 12:29:20,633 INFO L78 Accepts]: Start accepts. Automaton has 5194 states and 6276 transitions. Word has length 162 [2022-01-10 12:29:20,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:20,633 INFO L470 AbstractCegarLoop]: Abstraction has 5194 states and 6276 transitions. [2022-01-10 12:29:20,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 12:29:20,634 INFO L276 IsEmpty]: Start isEmpty. Operand 5194 states and 6276 transitions. [2022-01-10 12:29:20,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 12:29:20,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:20,643 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:29:20,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:29:20,643 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:20,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:20,643 INFO L85 PathProgramCache]: Analyzing trace with hash 961960847, now seen corresponding path program 2 times [2022-01-10 12:29:20,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:20,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104384404] [2022-01-10 12:29:20,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:20,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-10 12:29:20,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:20,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104384404] [2022-01-10 12:29:20,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104384404] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:29:20,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883042345] [2022-01-10 12:29:20,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 12:29:20,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:29:20,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:29:20,861 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:29:20,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 12:29:21,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 12:29:21,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 12:29:21,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-10 12:29:21,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:29:21,249 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-10 12:29:21,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:29:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-10 12:29:21,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883042345] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 12:29:21,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 12:29:21,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 20 [2022-01-10 12:29:21,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922245783] [2022-01-10 12:29:21,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:29:21,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 12:29:21,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:21,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 12:29:21,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-01-10 12:29:21,474 INFO L87 Difference]: Start difference. First operand 5194 states and 6276 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 12:29:23,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:23,032 INFO L93 Difference]: Finished difference Result 13943 states and 16887 transitions. [2022-01-10 12:29:23,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 12:29:23,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 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 162 [2022-01-10 12:29:23,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:23,050 INFO L225 Difference]: With dead ends: 13943 [2022-01-10 12:29:23,050 INFO L226 Difference]: Without dead ends: 11751 [2022-01-10 12:29:23,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=809, Unknown=0, NotChecked=0, Total=992 [2022-01-10 12:29:23,054 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 2294 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2294 SdHoareTripleChecker+Valid, 2196 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:23,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2294 Valid, 2196 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:29:23,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11751 states. [2022-01-10 12:29:23,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11751 to 8330. [2022-01-10 12:29:23,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8330 states, 8329 states have (on average 1.215271941409533) internal successors, (10122), 8329 states have internal predecessors, (10122), 0 states have call successors, (0), 0 states 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 12:29:23,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8330 states to 8330 states and 10122 transitions. [2022-01-10 12:29:23,986 INFO L78 Accepts]: Start accepts. Automaton has 8330 states and 10122 transitions. Word has length 162 [2022-01-10 12:29:23,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:23,988 INFO L470 AbstractCegarLoop]: Abstraction has 8330 states and 10122 transitions. [2022-01-10 12:29:23,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 12:29:23,989 INFO L276 IsEmpty]: Start isEmpty. Operand 8330 states and 10122 transitions. [2022-01-10 12:29:23,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 12:29:23,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:23,999 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:29:24,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 12:29:24,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:29:24,220 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:24,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:24,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1171489754, now seen corresponding path program 3 times [2022-01-10 12:29:24,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:24,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163191786] [2022-01-10 12:29:24,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:24,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:24,304 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-10 12:29:24,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:24,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163191786] [2022-01-10 12:29:24,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163191786] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:29:24,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:29:24,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:29:24,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196146474] [2022-01-10 12:29:24,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:29:24,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:29:24,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:24,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:29:24,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:29:24,306 INFO L87 Difference]: Start difference. First operand 8330 states and 10122 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 12:29:25,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:25,348 INFO L93 Difference]: Finished difference Result 16630 states and 20090 transitions. [2022-01-10 12:29:25,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:29:25,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 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 164 [2022-01-10 12:29:25,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:25,364 INFO L225 Difference]: With dead ends: 16630 [2022-01-10 12:29:25,364 INFO L226 Difference]: Without dead ends: 9514 [2022-01-10 12:29:25,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 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 12:29:25,373 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 340 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:25,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 1101 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:29:25,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9514 states. [2022-01-10 12:29:26,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9514 to 8330. [2022-01-10 12:29:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8330 states, 8329 states have (on average 1.2085484451914996) internal successors, (10066), 8329 states have internal predecessors, (10066), 0 states have call successors, (0), 0 states 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 12:29:26,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8330 states to 8330 states and 10066 transitions. [2022-01-10 12:29:26,282 INFO L78 Accepts]: Start accepts. Automaton has 8330 states and 10066 transitions. Word has length 164 [2022-01-10 12:29:26,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:26,282 INFO L470 AbstractCegarLoop]: Abstraction has 8330 states and 10066 transitions. [2022-01-10 12:29:26,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states 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 12:29:26,283 INFO L276 IsEmpty]: Start isEmpty. Operand 8330 states and 10066 transitions. [2022-01-10 12:29:26,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 12:29:26,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:29:26,292 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:29:26,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:29:26,292 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:29:26,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:29:26,293 INFO L85 PathProgramCache]: Analyzing trace with hash -464560826, now seen corresponding path program 1 times [2022-01-10 12:29:26,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:29:26,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687902005] [2022-01-10 12:29:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:26,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:29:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 34 proven. 116 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 12:29:26,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:29:26,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687902005] [2022-01-10 12:29:26,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687902005] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:29:26,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954505314] [2022-01-10 12:29:26,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:29:26,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:29:26,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:29:26,484 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 12:29:26,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 12:29:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:29:26,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 1110 conjuncts, 36 conjunts are in the unsatisfiable core [2022-01-10 12:29:26,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:29:27,051 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 92 proven. 64 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 12:29:27,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:29:30,087 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 85 proven. 71 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 12:29:30,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954505314] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 12:29:30,088 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 12:29:30,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 12] total 23 [2022-01-10 12:29:30,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688054015] [2022-01-10 12:29:30,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 12:29:30,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-10 12:29:30,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:29:30,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-10 12:29:30,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-01-10 12:29:30,089 INFO L87 Difference]: Start difference. First operand 8330 states and 10066 transitions. Second operand has 23 states, 23 states have (on average 16.608695652173914) internal successors, (382), 23 states have internal predecessors, (382), 0 states have call successors, (0), 0 states 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 12:29:31,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:29:31,609 INFO L93 Difference]: Finished difference Result 16282 states and 19736 transitions. [2022-01-10 12:29:31,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 12:29:31,610 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 16.608695652173914) internal successors, (382), 23 states have internal predecessors, (382), 0 states have call successors, (0), 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 165 [2022-01-10 12:29:31,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:29:31,610 INFO L225 Difference]: With dead ends: 16282 [2022-01-10 12:29:31,610 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 12:29:31,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 317 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2022-01-10 12:29:31,622 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 2766 mSDsluCounter, 4551 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2766 SdHoareTripleChecker+Valid, 5293 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:29:31,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2766 Valid, 5293 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:29:31,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 12:29:31,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 12:29:31,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:29:31,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 12:29:31,623 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 165 [2022-01-10 12:29:31,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:29:31,624 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 12:29:31,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 16.608695652173914) internal successors, (382), 23 states have internal predecessors, (382), 0 states have call successors, (0), 0 states 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 12:29:31,624 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 12:29:31,624 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 12:29:31,626 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-10 12:29:31,626 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-10 12:29:31,626 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-10 12:29:31,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 12:29:31,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:29:31,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 12:29:40,668 WARN L228 SmtUtils]: Spent 7.74s on a formula simplification. DAG size of input: 413 DAG size of output: 407 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 12:29:46,139 WARN L228 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 314 DAG size of output: 308 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)