/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec0_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:50:29,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:50:29,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:50:29,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:50:29,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:50:29,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:50:29,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:50:29,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:50:29,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:50:29,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:50:29,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:50:29,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:50:29,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:50:29,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:50:29,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:50:29,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:50:29,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:50:29,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:50:29,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:50:29,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:50:29,200 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:50:29,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:50:29,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:50:29,203 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:50:29,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:50:29,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:50:29,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:50:29,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:50:29,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:50:29,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:50:29,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:50:29,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:50:29,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:50:29,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:50:29,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:50:29,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:50:29,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:50:29,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:50:29,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:50:29,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:50:29,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:50:29,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:50:29,225 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:50:29,225 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:50:29,225 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:50:29,225 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:50:29,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:50:29,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:50:29,226 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:50:29,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:50:29,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:50:29,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:50:29,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:50:29,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:50:29,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:50:29,227 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:50:29,227 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:50:29,228 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:50:29,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:50:29,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:50:29,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:50:29,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:50:29,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:50:29,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:50:29,228 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:50:29,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:50:29,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:50:29,229 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:50:29,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:50:29,229 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:50:29,229 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:50:29,229 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:50:29,229 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:50:29,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:50:29,230 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:50:29,230 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:50:29,411 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:50:29,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:50:29,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:50:29,439 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:50:29,439 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:50:29,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product40.cil.c [2022-01-10 23:50:29,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a143d7e3/e084f5a7ba3444c2b1a6c22a8f631b57/FLAG374c76399 [2022-01-10 23:50:29,910 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:50:29,911 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product40.cil.c [2022-01-10 23:50:29,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a143d7e3/e084f5a7ba3444c2b1a6c22a8f631b57/FLAG374c76399 [2022-01-10 23:50:29,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a143d7e3/e084f5a7ba3444c2b1a6c22a8f631b57 [2022-01-10 23:50:29,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:50:29,957 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:50:29,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:50:29,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:50:29,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:50:29,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:50:29" (1/1) ... [2022-01-10 23:50:29,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68eee655 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:29, skipping insertion in model container [2022-01-10 23:50:29,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:50:29" (1/1) ... [2022-01-10 23:50:29,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:50:30,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:50:30,257 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product40.cil.c[7657,7670] [2022-01-10 23:50:30,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:50:30,473 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:50:30,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:50:30,505 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product40.cil.c[7657,7670] [2022-01-10 23:50:30,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:50:30,554 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:50:30,566 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product40.cil.c[7657,7670] [2022-01-10 23:50:30,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:50:30,634 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:50:30,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:30 WrapperNode [2022-01-10 23:50:30,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:50:30,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:50:30,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:50:30,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:50:30,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:30" (1/1) ... [2022-01-10 23:50:30,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:30" (1/1) ... [2022-01-10 23:50:30,755 INFO L137 Inliner]: procedures = 129, calls = 205, calls flagged for inlining = 115, calls inlined = 248, statements flattened = 3366 [2022-01-10 23:50:30,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:50:30,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:50:30,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:50:30,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:50:30,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:30" (1/1) ... [2022-01-10 23:50:30,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:30" (1/1) ... [2022-01-10 23:50:30,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:30" (1/1) ... [2022-01-10 23:50:30,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:30" (1/1) ... [2022-01-10 23:50:30,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:30" (1/1) ... [2022-01-10 23:50:30,832 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:30" (1/1) ... [2022-01-10 23:50:30,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:30" (1/1) ... [2022-01-10 23:50:30,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:50:30,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:50:30,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:50:30,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:50:30,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:30" (1/1) ... [2022-01-10 23:50:30,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:50:30,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:50:30,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 23:50:30,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 23:50:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:50:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:50:30,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:50:30,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:50:30,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:50:31,112 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:50:31,113 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:50:32,343 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:50:32,360 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:50:32,360 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:50:32,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:50:32 BoogieIcfgContainer [2022-01-10 23:50:32,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:50:32,363 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:50:32,363 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:50:32,365 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:50:32,367 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:50:32" (1/1) ... [2022-01-10 23:50:32,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:50:32 BasicIcfg [2022-01-10 23:50:32,627 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:50:32,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:50:32,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:50:32,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:50:32,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:50:29" (1/4) ... [2022-01-10 23:50:32,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb6e03e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:50:32, skipping insertion in model container [2022-01-10 23:50:32,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:50:30" (2/4) ... [2022-01-10 23:50:32,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb6e03e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:50:32, skipping insertion in model container [2022-01-10 23:50:32,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:50:32" (3/4) ... [2022-01-10 23:50:32,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb6e03e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:50:32, skipping insertion in model container [2022-01-10 23:50:32,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:50:32" (4/4) ... [2022-01-10 23:50:32,632 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product40.cil.cTransformedIcfg [2022-01-10 23:50:32,635 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:50:32,636 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-01-10 23:50:32,694 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:50:32,698 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 23:50:32,698 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-10 23:50:32,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 747 states, 740 states have (on average 1.6594594594594594) internal successors, (1228), 746 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:32,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 23:50:32,738 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:32,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:32,739 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:50:32,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:32,743 INFO L85 PathProgramCache]: Analyzing trace with hash -974049029, now seen corresponding path program 1 times [2022-01-10 23:50:32,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:32,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134082834] [2022-01-10 23:50:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:32,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:33,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:33,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:33,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134082834] [2022-01-10 23:50:33,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134082834] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:33,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:33,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:50:33,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995908840] [2022-01-10 23:50:33,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:33,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:50:33,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:33,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:50:33,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:50:33,102 INFO L87 Difference]: Start difference. First operand has 747 states, 740 states have (on average 1.6594594594594594) internal successors, (1228), 746 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:33,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:33,150 INFO L93 Difference]: Finished difference Result 1180 states and 1901 transitions. [2022-01-10 23:50:33,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:50:33,152 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-10 23:50:33,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:33,163 INFO L225 Difference]: With dead ends: 1180 [2022-01-10 23:50:33,166 INFO L226 Difference]: Without dead ends: 700 [2022-01-10 23:50:33,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:50:33,173 INFO L933 BasicCegarLoop]: 1214 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, 1214 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:33,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1214 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:50:33,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-01-10 23:50:33,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2022-01-10 23:50:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 694 states have (on average 1.6657060518731988) internal successors, (1156), 699 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:33,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1156 transitions. [2022-01-10 23:50:33,237 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1156 transitions. Word has length 55 [2022-01-10 23:50:33,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:33,238 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 1156 transitions. [2022-01-10 23:50:33,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:33,239 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1156 transitions. [2022-01-10 23:50:33,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 23:50:33,241 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:33,241 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:33,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:50:33,242 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:50:33,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:33,243 INFO L85 PathProgramCache]: Analyzing trace with hash 457123293, now seen corresponding path program 1 times [2022-01-10 23:50:33,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:33,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088459586] [2022-01-10 23:50:33,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:33,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:33,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:33,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:33,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088459586] [2022-01-10 23:50:33,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088459586] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:33,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:33,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:50:33,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286976760] [2022-01-10 23:50:33,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:33,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:50:33,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:33,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:50:33,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:33,451 INFO L87 Difference]: Start difference. First operand 700 states and 1156 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:33,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:33,567 INFO L93 Difference]: Finished difference Result 1381 states and 2284 transitions. [2022-01-10 23:50:33,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:50:33,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 23:50:33,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:33,574 INFO L225 Difference]: With dead ends: 1381 [2022-01-10 23:50:33,574 INFO L226 Difference]: Without dead ends: 700 [2022-01-10 23:50:33,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:33,580 INFO L933 BasicCegarLoop]: 1134 mSDtfsCounter, 1131 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:33,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1131 Valid, 1147 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:33,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2022-01-10 23:50:33,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2022-01-10 23:50:33,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 694 states have (on average 1.6628242074927955) internal successors, (1154), 699 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:33,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1154 transitions. [2022-01-10 23:50:33,628 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1154 transitions. Word has length 56 [2022-01-10 23:50:33,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:33,629 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 1154 transitions. [2022-01-10 23:50:33,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:33,629 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1154 transitions. [2022-01-10 23:50:33,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 23:50:33,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:33,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:33,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:50:33,631 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:50:33,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:33,631 INFO L85 PathProgramCache]: Analyzing trace with hash -168414115, now seen corresponding path program 1 times [2022-01-10 23:50:33,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:33,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13905623] [2022-01-10 23:50:33,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:33,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:33,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:33,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:33,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13905623] [2022-01-10 23:50:33,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13905623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:33,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:33,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:50:33,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658836913] [2022-01-10 23:50:33,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:33,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:50:33,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:33,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:50:33,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:50:33,726 INFO L87 Difference]: Start difference. First operand 700 states and 1154 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:33,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:33,987 INFO L93 Difference]: Finished difference Result 3368 states and 5566 transitions. [2022-01-10 23:50:33,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:50:33,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 23:50:33,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:33,999 INFO L225 Difference]: With dead ends: 3368 [2022-01-10 23:50:33,999 INFO L226 Difference]: Without dead ends: 2692 [2022-01-10 23:50:34,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:50:34,006 INFO L933 BasicCegarLoop]: 2231 mSDtfsCounter, 5553 mSDsluCounter, 3334 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5553 SdHoareTripleChecker+Valid, 5565 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:34,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5553 Valid, 5565 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:34,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2022-01-10 23:50:34,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 700. [2022-01-10 23:50:34,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 694 states have (on average 1.6613832853025936) internal successors, (1153), 699 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:34,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1153 transitions. [2022-01-10 23:50:34,053 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1153 transitions. Word has length 58 [2022-01-10 23:50:34,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:34,053 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 1153 transitions. [2022-01-10 23:50:34,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:34,054 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1153 transitions. [2022-01-10 23:50:34,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 23:50:34,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:34,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:34,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:50:34,055 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:50:34,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:34,056 INFO L85 PathProgramCache]: Analyzing trace with hash 235917269, now seen corresponding path program 1 times [2022-01-10 23:50:34,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:34,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992718087] [2022-01-10 23:50:34,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:34,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:34,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:34,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:34,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992718087] [2022-01-10 23:50:34,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992718087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:34,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:34,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:50:34,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329110711] [2022-01-10 23:50:34,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:34,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:50:34,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:34,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:50:34,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:34,154 INFO L87 Difference]: Start difference. First operand 700 states and 1153 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:34,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:34,214 INFO L93 Difference]: Finished difference Result 1385 states and 2284 transitions. [2022-01-10 23:50:34,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:50:34,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-10 23:50:34,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:34,218 INFO L225 Difference]: With dead ends: 1385 [2022-01-10 23:50:34,218 INFO L226 Difference]: Without dead ends: 714 [2022-01-10 23:50:34,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:34,225 INFO L933 BasicCegarLoop]: 1167 mSDtfsCounter, 1132 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:34,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 1189 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:50:34,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-01-10 23:50:34,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 700. [2022-01-10 23:50:34,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 694 states have (on average 1.659942363112392) internal successors, (1152), 699 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1152 transitions. [2022-01-10 23:50:34,266 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1152 transitions. Word has length 59 [2022-01-10 23:50:34,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:34,267 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 1152 transitions. [2022-01-10 23:50:34,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:34,267 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1152 transitions. [2022-01-10 23:50:34,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 23:50:34,269 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:34,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:34,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:50:34,270 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:50:34,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:34,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1915355236, now seen corresponding path program 1 times [2022-01-10 23:50:34,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:34,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665752581] [2022-01-10 23:50:34,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:34,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:34,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:34,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665752581] [2022-01-10 23:50:34,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665752581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:34,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:34,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:50:34,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179532779] [2022-01-10 23:50:34,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:34,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:50:34,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:34,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:50:34,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:50:34,389 INFO L87 Difference]: Start difference. First operand 700 states and 1152 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:34,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:34,536 INFO L93 Difference]: Finished difference Result 2034 states and 3356 transitions. [2022-01-10 23:50:34,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:50:34,536 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 23:50:34,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:34,541 INFO L225 Difference]: With dead ends: 2034 [2022-01-10 23:50:34,541 INFO L226 Difference]: Without dead ends: 1368 [2022-01-10 23:50:34,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:50:34,543 INFO L933 BasicCegarLoop]: 1161 mSDtfsCounter, 5476 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5476 SdHoareTripleChecker+Valid, 2336 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:34,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5476 Valid, 2336 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:34,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2022-01-10 23:50:34,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 700. [2022-01-10 23:50:34,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 694 states have (on average 1.6570605187319885) internal successors, (1150), 699 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:34,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 1150 transitions. [2022-01-10 23:50:34,607 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 1150 transitions. Word has length 60 [2022-01-10 23:50:34,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:34,607 INFO L470 AbstractCegarLoop]: Abstraction has 700 states and 1150 transitions. [2022-01-10 23:50:34,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:34,608 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 1150 transitions. [2022-01-10 23:50:34,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 23:50:34,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:34,609 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:34,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:50:34,609 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:50:34,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:34,609 INFO L85 PathProgramCache]: Analyzing trace with hash 683643551, now seen corresponding path program 1 times [2022-01-10 23:50:34,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:34,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556295850] [2022-01-10 23:50:34,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:34,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:34,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:34,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556295850] [2022-01-10 23:50:34,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556295850] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:34,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:34,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:50:34,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179594446] [2022-01-10 23:50:34,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:34,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:50:34,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:34,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:50:34,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:50:34,707 INFO L87 Difference]: Start difference. First operand 700 states and 1150 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:34,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:34,985 INFO L93 Difference]: Finished difference Result 2272 states and 3692 transitions. [2022-01-10 23:50:34,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:50:34,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-01-10 23:50:34,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:34,992 INFO L225 Difference]: With dead ends: 2272 [2022-01-10 23:50:34,992 INFO L226 Difference]: Without dead ends: 1967 [2022-01-10 23:50:34,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:50:34,995 INFO L933 BasicCegarLoop]: 1136 mSDtfsCounter, 2734 mSDsluCounter, 3621 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2734 SdHoareTripleChecker+Valid, 4757 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:34,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2734 Valid, 4757 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:34,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1967 states. [2022-01-10 23:50:35,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1967 to 1349. [2022-01-10 23:50:35,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1343 states have (on average 1.6612062546537603) internal successors, (2231), 1348 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:35,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 2231 transitions. [2022-01-10 23:50:35,068 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 2231 transitions. Word has length 62 [2022-01-10 23:50:35,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:35,069 INFO L470 AbstractCegarLoop]: Abstraction has 1349 states and 2231 transitions. [2022-01-10 23:50:35,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:35,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 2231 transitions. [2022-01-10 23:50:35,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 23:50:35,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:35,071 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:35,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:50:35,071 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:50:35,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:35,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1615516973, now seen corresponding path program 1 times [2022-01-10 23:50:35,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:35,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672531104] [2022-01-10 23:50:35,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:35,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:35,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:35,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:35,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:35,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672531104] [2022-01-10 23:50:35,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672531104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:35,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:35,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:50:35,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314779221] [2022-01-10 23:50:35,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:35,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:50:35,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:35,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:50:35,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:50:35,196 INFO L87 Difference]: Start difference. First operand 1349 states and 2231 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:35,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:35,560 INFO L93 Difference]: Finished difference Result 4445 states and 7247 transitions. [2022-01-10 23:50:35,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:50:35,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-01-10 23:50:35,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:35,573 INFO L225 Difference]: With dead ends: 4445 [2022-01-10 23:50:35,573 INFO L226 Difference]: Without dead ends: 3869 [2022-01-10 23:50:35,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:50:35,576 INFO L933 BasicCegarLoop]: 1427 mSDtfsCounter, 2243 mSDsluCounter, 3709 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2243 SdHoareTripleChecker+Valid, 5136 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:35,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2243 Valid, 5136 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:35,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3869 states. [2022-01-10 23:50:35,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3869 to 2633. [2022-01-10 23:50:35,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2633 states, 2627 states have (on average 1.669204415683289) internal successors, (4385), 2632 states have internal predecessors, (4385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:35,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2633 states to 2633 states and 4385 transitions. [2022-01-10 23:50:35,742 INFO L78 Accepts]: Start accepts. Automaton has 2633 states and 4385 transitions. Word has length 63 [2022-01-10 23:50:35,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:35,742 INFO L470 AbstractCegarLoop]: Abstraction has 2633 states and 4385 transitions. [2022-01-10 23:50:35,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:35,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2633 states and 4385 transitions. [2022-01-10 23:50:35,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 23:50:35,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:35,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:35,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:50:35,744 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:50:35,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:35,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1806620731, now seen corresponding path program 1 times [2022-01-10 23:50:35,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:35,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763289954] [2022-01-10 23:50:35,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:35,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:35,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:35,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:35,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763289954] [2022-01-10 23:50:35,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763289954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:35,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:35,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:50:35,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546645529] [2022-01-10 23:50:35,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:35,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:50:35,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:35,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:50:35,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:50:35,876 INFO L87 Difference]: Start difference. First operand 2633 states and 4385 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:36,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:36,430 INFO L93 Difference]: Finished difference Result 8582 states and 14058 transitions. [2022-01-10 23:50:36,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:50:36,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 23:50:36,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:36,451 INFO L225 Difference]: With dead ends: 8582 [2022-01-10 23:50:36,451 INFO L226 Difference]: Without dead ends: 6977 [2022-01-10 23:50:36,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:50:36,455 INFO L933 BasicCegarLoop]: 1427 mSDtfsCounter, 2242 mSDsluCounter, 3709 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 5136 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:36,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2242 Valid, 5136 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:36,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6977 states. [2022-01-10 23:50:36,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6977 to 4829. [2022-01-10 23:50:36,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4829 states, 4823 states have (on average 1.679867302508812) internal successors, (8102), 4828 states have internal predecessors, (8102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:36,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4829 states to 4829 states and 8102 transitions. [2022-01-10 23:50:36,692 INFO L78 Accepts]: Start accepts. Automaton has 4829 states and 8102 transitions. Word has length 64 [2022-01-10 23:50:36,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:36,692 INFO L470 AbstractCegarLoop]: Abstraction has 4829 states and 8102 transitions. [2022-01-10 23:50:36,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:36,692 INFO L276 IsEmpty]: Start isEmpty. Operand 4829 states and 8102 transitions. [2022-01-10 23:50:36,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 23:50:36,695 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:36,695 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 23:50:36,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:50:36,696 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:50:36,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:36,696 INFO L85 PathProgramCache]: Analyzing trace with hash -916295203, now seen corresponding path program 1 times [2022-01-10 23:50:36,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:36,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859335360] [2022-01-10 23:50:36,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:36,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:36,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:36,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:36,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859335360] [2022-01-10 23:50:36,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859335360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:36,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:36,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:50:36,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175823768] [2022-01-10 23:50:36,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:36,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:50:36,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:36,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:50:36,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:36,746 INFO L87 Difference]: Start difference. First operand 4829 states and 8102 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 23:50:37,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:37,111 INFO L93 Difference]: Finished difference Result 13997 states and 23440 transitions. [2022-01-10 23:50:37,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:50:37,111 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 23:50:37,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:37,139 INFO L225 Difference]: With dead ends: 13997 [2022-01-10 23:50:37,139 INFO L226 Difference]: Without dead ends: 9205 [2022-01-10 23:50:37,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:37,146 INFO L933 BasicCegarLoop]: 1147 mSDtfsCounter, 1094 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 2196 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:37,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1094 Valid, 2196 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:50:37,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9205 states. [2022-01-10 23:50:37,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9205 to 6581. [2022-01-10 23:50:37,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6581 states, 6575 states have (on average 1.7111787072243345) internal successors, (11251), 6580 states have internal predecessors, (11251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:37,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6581 states to 6581 states and 11251 transitions. [2022-01-10 23:50:37,529 INFO L78 Accepts]: Start accepts. Automaton has 6581 states and 11251 transitions. Word has length 75 [2022-01-10 23:50:37,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:37,529 INFO L470 AbstractCegarLoop]: Abstraction has 6581 states and 11251 transitions. [2022-01-10 23:50:37,530 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 23:50:37,530 INFO L276 IsEmpty]: Start isEmpty. Operand 6581 states and 11251 transitions. [2022-01-10 23:50:37,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 23:50:37,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:37,533 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:37,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:50:37,533 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:50:37,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:37,534 INFO L85 PathProgramCache]: Analyzing trace with hash -566803094, now seen corresponding path program 1 times [2022-01-10 23:50:37,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:37,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201431829] [2022-01-10 23:50:37,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:37,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:37,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:37,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201431829] [2022-01-10 23:50:37,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201431829] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:37,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:37,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:50:37,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629387488] [2022-01-10 23:50:37,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:37,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:50:37,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:37,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:50:37,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:37,580 INFO L87 Difference]: Start difference. First operand 6581 states and 11251 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:38,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:38,074 INFO L93 Difference]: Finished difference Result 19573 states and 33495 transitions. [2022-01-10 23:50:38,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:50:38,074 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-01-10 23:50:38,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:38,104 INFO L225 Difference]: With dead ends: 19573 [2022-01-10 23:50:38,104 INFO L226 Difference]: Without dead ends: 13029 [2022-01-10 23:50:38,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:38,113 INFO L933 BasicCegarLoop]: 1147 mSDtfsCounter, 1092 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 2282 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:38,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1092 Valid, 2282 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:50:38,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13029 states. [2022-01-10 23:50:38,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13029 to 10405. [2022-01-10 23:50:38,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10405 states, 10399 states have (on average 1.7452639676892008) internal successors, (18149), 10404 states have internal predecessors, (18149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:38,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10405 states to 10405 states and 18149 transitions. [2022-01-10 23:50:38,529 INFO L78 Accepts]: Start accepts. Automaton has 10405 states and 18149 transitions. Word has length 76 [2022-01-10 23:50:38,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:38,529 INFO L470 AbstractCegarLoop]: Abstraction has 10405 states and 18149 transitions. [2022-01-10 23:50:38,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:38,530 INFO L276 IsEmpty]: Start isEmpty. Operand 10405 states and 18149 transitions. [2022-01-10 23:50:38,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 23:50:38,535 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:38,536 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:38,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:50:38,536 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:50:38,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:38,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1507056054, now seen corresponding path program 1 times [2022-01-10 23:50:38,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:38,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364305785] [2022-01-10 23:50:38,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:38,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:38,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:38,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:38,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364305785] [2022-01-10 23:50:38,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364305785] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:38,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:38,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:50:38,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097521344] [2022-01-10 23:50:38,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:38,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:50:38,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:38,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:50:38,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:38,582 INFO L87 Difference]: Start difference. First operand 10405 states and 18149 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:39,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:39,439 INFO L93 Difference]: Finished difference Result 30949 states and 54029 transitions. [2022-01-10 23:50:39,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:50:39,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-10 23:50:39,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:39,483 INFO L225 Difference]: With dead ends: 30949 [2022-01-10 23:50:39,483 INFO L226 Difference]: Without dead ends: 20581 [2022-01-10 23:50:39,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:39,501 INFO L933 BasicCegarLoop]: 1147 mSDtfsCounter, 1090 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 2282 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:39,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1090 Valid, 2282 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:50:39,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20581 states. [2022-01-10 23:50:40,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20581 to 17957. [2022-01-10 23:50:40,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17957 states, 17951 states have (on average 1.7697621302434405) internal successors, (31769), 17956 states have internal predecessors, (31769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:40,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17957 states to 17957 states and 31769 transitions. [2022-01-10 23:50:40,151 INFO L78 Accepts]: Start accepts. Automaton has 17957 states and 31769 transitions. Word has length 77 [2022-01-10 23:50:40,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:40,151 INFO L470 AbstractCegarLoop]: Abstraction has 17957 states and 31769 transitions. [2022-01-10 23:50:40,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:40,151 INFO L276 IsEmpty]: Start isEmpty. Operand 17957 states and 31769 transitions. [2022-01-10 23:50:40,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 23:50:40,159 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:40,159 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:40,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:50:40,159 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:50:40,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:40,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2106565842, now seen corresponding path program 1 times [2022-01-10 23:50:40,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:40,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554310252] [2022-01-10 23:50:40,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:40,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:40,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:40,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:40,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554310252] [2022-01-10 23:50:40,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554310252] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:40,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:40,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:50:40,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436969725] [2022-01-10 23:50:40,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:40,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:50:40,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:40,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:50:40,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:40,215 INFO L87 Difference]: Start difference. First operand 17957 states and 31769 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:41,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:41,223 INFO L93 Difference]: Finished difference Result 51749 states and 91497 transitions. [2022-01-10 23:50:41,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:50:41,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-01-10 23:50:41,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:41,284 INFO L225 Difference]: With dead ends: 51749 [2022-01-10 23:50:41,285 INFO L226 Difference]: Without dead ends: 33829 [2022-01-10 23:50:41,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:41,306 INFO L933 BasicCegarLoop]: 1147 mSDtfsCounter, 1088 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:41,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1088 Valid, 2234 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:50:41,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33829 states. [2022-01-10 23:50:42,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33829 to 31205. [2022-01-10 23:50:42,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31205 states, 31199 states have (on average 1.7816276162697522) internal successors, (55585), 31204 states have internal predecessors, (55585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:42,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31205 states to 31205 states and 55585 transitions. [2022-01-10 23:50:42,612 INFO L78 Accepts]: Start accepts. Automaton has 31205 states and 55585 transitions. Word has length 78 [2022-01-10 23:50:42,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:42,613 INFO L470 AbstractCegarLoop]: Abstraction has 31205 states and 55585 transitions. [2022-01-10 23:50:42,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:42,613 INFO L276 IsEmpty]: Start isEmpty. Operand 31205 states and 55585 transitions. [2022-01-10 23:50:42,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 23:50:42,621 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:42,622 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:42,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:50:42,622 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:50:42,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:42,622 INFO L85 PathProgramCache]: Analyzing trace with hash -492955287, now seen corresponding path program 1 times [2022-01-10 23:50:42,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:42,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119037913] [2022-01-10 23:50:42,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:42,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:42,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:42,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119037913] [2022-01-10 23:50:42,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119037913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:42,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:42,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:50:42,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281579292] [2022-01-10 23:50:42,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:42,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:50:42,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:42,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:50:42,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:42,686 INFO L87 Difference]: Start difference. First operand 31205 states and 55585 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:44,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:44,543 INFO L93 Difference]: Finished difference Result 89445 states and 159233 transitions. [2022-01-10 23:50:44,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:50:44,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-01-10 23:50:44,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:44,652 INFO L225 Difference]: With dead ends: 89445 [2022-01-10 23:50:44,652 INFO L226 Difference]: Without dead ends: 58277 [2022-01-10 23:50:44,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:50:44,688 INFO L933 BasicCegarLoop]: 1147 mSDtfsCounter, 1086 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 2234 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:44,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 2234 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:50:44,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58277 states. [2022-01-10 23:50:46,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58277 to 55653. [2022-01-10 23:50:46,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55653 states, 55647 states have (on average 1.78699660359049) internal successors, (99441), 55652 states have internal predecessors, (99441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:47,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55653 states to 55653 states and 99441 transitions. [2022-01-10 23:50:47,146 INFO L78 Accepts]: Start accepts. Automaton has 55653 states and 99441 transitions. Word has length 79 [2022-01-10 23:50:47,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:47,146 INFO L470 AbstractCegarLoop]: Abstraction has 55653 states and 99441 transitions. [2022-01-10 23:50:47,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:47,147 INFO L276 IsEmpty]: Start isEmpty. Operand 55653 states and 99441 transitions. [2022-01-10 23:50:47,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-10 23:50:47,153 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:47,153 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:47,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:50:47,153 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:50:47,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:47,154 INFO L85 PathProgramCache]: Analyzing trace with hash -2077293662, now seen corresponding path program 1 times [2022-01-10 23:50:47,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:47,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568199411] [2022-01-10 23:50:47,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:47,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:47,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:50:47,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:47,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568199411] [2022-01-10 23:50:47,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568199411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:47,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:47,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:50:47,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156111126] [2022-01-10 23:50:47,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:47,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:50:47,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:47,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:50:47,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:50:47,225 INFO L87 Difference]: Start difference. First operand 55653 states and 99441 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:48,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:48,306 INFO L93 Difference]: Finished difference Result 62151 states and 111043 transitions. [2022-01-10 23:50:48,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:50:48,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-01-10 23:50:48,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:48,361 INFO L225 Difference]: With dead ends: 62151 [2022-01-10 23:50:48,361 INFO L226 Difference]: Without dead ends: 34141 [2022-01-10 23:50:48,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:50:48,385 INFO L933 BasicCegarLoop]: 1601 mSDtfsCounter, 2185 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2185 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:48,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2185 Valid, 2119 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:50:48,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34141 states. [2022-01-10 23:50:49,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34141 to 27677. [2022-01-10 23:50:49,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27677 states, 27671 states have (on average 1.781323407177189) internal successors, (49291), 27676 states have internal predecessors, (49291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:49,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27677 states to 27677 states and 49291 transitions. [2022-01-10 23:50:49,441 INFO L78 Accepts]: Start accepts. Automaton has 27677 states and 49291 transitions. Word has length 80 [2022-01-10 23:50:49,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:49,441 INFO L470 AbstractCegarLoop]: Abstraction has 27677 states and 49291 transitions. [2022-01-10 23:50:49,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:49,444 INFO L276 IsEmpty]: Start isEmpty. Operand 27677 states and 49291 transitions. [2022-01-10 23:50:49,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 23:50:49,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:49,452 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:49,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:50:49,452 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:50:49,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:49,453 INFO L85 PathProgramCache]: Analyzing trace with hash -835814911, now seen corresponding path program 1 times [2022-01-10 23:50:49,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:49,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005849648] [2022-01-10 23:50:49,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:49,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:49,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 23:50:49,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:49,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005849648] [2022-01-10 23:50:49,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005849648] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:49,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:49,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 23:50:49,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581614469] [2022-01-10 23:50:49,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:49,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:50:49,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:49,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:50:49,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:50:49,576 INFO L87 Difference]: Start difference. First operand 27677 states and 49291 transitions. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:52,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:52,091 INFO L93 Difference]: Finished difference Result 36068 states and 62214 transitions. [2022-01-10 23:50:52,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-10 23:50:52,092 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 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 23:50:52,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:52,150 INFO L225 Difference]: With dead ends: 36068 [2022-01-10 23:50:52,150 INFO L226 Difference]: Without dead ends: 35113 [2022-01-10 23:50:52,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=277, Invalid=653, Unknown=0, NotChecked=0, Total=930 [2022-01-10 23:50:52,163 INFO L933 BasicCegarLoop]: 2105 mSDtfsCounter, 6679 mSDsluCounter, 11246 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6679 SdHoareTripleChecker+Valid, 13351 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:52,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6679 Valid, 13351 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 23:50:52,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35113 states. [2022-01-10 23:50:53,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35113 to 28727. [2022-01-10 23:50:53,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28727 states, 28721 states have (on average 1.772814317050242) internal successors, (50917), 28726 states have internal predecessors, (50917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:53,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28727 states to 28727 states and 50917 transitions. [2022-01-10 23:50:53,320 INFO L78 Accepts]: Start accepts. Automaton has 28727 states and 50917 transitions. Word has length 82 [2022-01-10 23:50:53,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:53,320 INFO L470 AbstractCegarLoop]: Abstraction has 28727 states and 50917 transitions. [2022-01-10 23:50:53,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:53,320 INFO L276 IsEmpty]: Start isEmpty. Operand 28727 states and 50917 transitions. [2022-01-10 23:50:53,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 23:50:53,327 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:53,327 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:53,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:50:53,328 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:50:53,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:53,328 INFO L85 PathProgramCache]: Analyzing trace with hash 418180667, now seen corresponding path program 1 times [2022-01-10 23:50:53,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:53,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810005469] [2022-01-10 23:50:53,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:53,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 23:50:53,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:53,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810005469] [2022-01-10 23:50:53,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810005469] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:53,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:53,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 23:50:53,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841096441] [2022-01-10 23:50:53,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:53,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 23:50:53,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:53,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 23:50:53,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:50:53,424 INFO L87 Difference]: Start difference. First operand 28727 states and 50917 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 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 23:50:54,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:54,627 INFO L93 Difference]: Finished difference Result 31843 states and 55719 transitions. [2022-01-10 23:50:54,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:50:54,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 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 83 [2022-01-10 23:50:54,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:54,682 INFO L225 Difference]: With dead ends: 31843 [2022-01-10 23:50:54,682 INFO L226 Difference]: Without dead ends: 29793 [2022-01-10 23:50:54,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-01-10 23:50:54,694 INFO L933 BasicCegarLoop]: 1113 mSDtfsCounter, 3156 mSDsluCounter, 3568 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3156 SdHoareTripleChecker+Valid, 4681 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:54,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3156 Valid, 4681 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:50:54,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29793 states. [2022-01-10 23:50:55,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29793 to 28727. [2022-01-10 23:50:55,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28727 states, 28721 states have (on average 1.771978691549737) internal successors, (50893), 28726 states have internal predecessors, (50893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:55,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28727 states to 28727 states and 50893 transitions. [2022-01-10 23:50:55,829 INFO L78 Accepts]: Start accepts. Automaton has 28727 states and 50893 transitions. Word has length 83 [2022-01-10 23:50:55,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:55,829 INFO L470 AbstractCegarLoop]: Abstraction has 28727 states and 50893 transitions. [2022-01-10 23:50:55,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 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 23:50:55,829 INFO L276 IsEmpty]: Start isEmpty. Operand 28727 states and 50893 transitions. [2022-01-10 23:50:55,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 23:50:55,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:50:55,837 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:50:55,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:50:55,837 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-01-10 23:50:55,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:50:55,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1771490364, now seen corresponding path program 1 times [2022-01-10 23:50:55,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:50:55,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5507764] [2022-01-10 23:50:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:50:55,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:50:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:50:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 23:50:55,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:50:55,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5507764] [2022-01-10 23:50:55,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5507764] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:50:55,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:50:55,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:50:55,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896885037] [2022-01-10 23:50:55,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:50:55,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:50:55,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:50:55,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:50:55,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:50:55,910 INFO L87 Difference]: Start difference. First operand 28727 states and 50893 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:56,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:50:56,988 INFO L93 Difference]: Finished difference Result 29885 states and 52717 transitions. [2022-01-10 23:50:56,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:50:56,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-10 23:50:56,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:50:56,990 INFO L225 Difference]: With dead ends: 29885 [2022-01-10 23:50:56,990 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 23:50:57,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:50:57,007 INFO L933 BasicCegarLoop]: 1451 mSDtfsCounter, 834 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 3517 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:50:57,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [834 Valid, 3517 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:50:57,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 23:50:57,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 23:50:57,008 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 23:50:57,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 23:50:57,008 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2022-01-10 23:50:57,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:50:57,008 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 23:50:57,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:50:57,008 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 23:50:57,008 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 23:50:57,010 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2022-01-10 23:50:57,011 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2022-01-10 23:50:57,011 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2022-01-10 23:50:57,011 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2022-01-10 23:50:57,011 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2022-01-10 23:50:57,011 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2022-01-10 23:50:57,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 23:50:57,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-10 23:51:02,564 WARN L228 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 162 DAG size of output: 162 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-10 23:51:38,482 WARN L228 SmtUtils]: Spent 35.92s on a formula simplification. DAG size of input: 159 DAG size of output: 159 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)