/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec27_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 05:42:05,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 05:42:05,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 05:42:05,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 05:42:05,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 05:42:05,257 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 05:42:05,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 05:42:05,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 05:42:05,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 05:42:05,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 05:42:05,261 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 05:42:05,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 05:42:05,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 05:42:05,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 05:42:05,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 05:42:05,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 05:42:05,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 05:42:05,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 05:42:05,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 05:42:05,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 05:42:05,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 05:42:05,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 05:42:05,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 05:42:05,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 05:42:05,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 05:42:05,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 05:42:05,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 05:42:05,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 05:42:05,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 05:42:05,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 05:42:05,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 05:42:05,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 05:42:05,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 05:42:05,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 05:42:05,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 05:42:05,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 05:42:05,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 05:42:05,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 05:42:05,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 05:42:05,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 05:42:05,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 05:42:05,314 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 05:42:05,336 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 05:42:05,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 05:42:05,337 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 05:42:05,337 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 05:42:05,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 05:42:05,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 05:42:05,338 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 05:42:05,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 05:42:05,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 05:42:05,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 05:42:05,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 05:42:05,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 05:42:05,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 05:42:05,339 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 05:42:05,339 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 05:42:05,339 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 05:42:05,339 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 05:42:05,339 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 05:42:05,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 05:42:05,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 05:42:05,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 05:42:05,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:42:05,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 05:42:05,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 05:42:05,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 05:42:05,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 05:42:05,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 05:42:05,341 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 05:42:05,341 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 05:42:05,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 05:42:05,341 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 05:42:05,342 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 05:42:05,342 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 05:42:05,342 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 05:42:05,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 05:42:05,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 05:42:05,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 05:42:05,551 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 05:42:05,552 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 05:42:05,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product33.cil.c [2022-01-11 05:42:05,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a53fe2d9f/4b1b51ab52464157bc79acbdd539c6c0/FLAG62aa89ecd [2022-01-11 05:42:06,112 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 05:42:06,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product33.cil.c [2022-01-11 05:42:06,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a53fe2d9f/4b1b51ab52464157bc79acbdd539c6c0/FLAG62aa89ecd [2022-01-11 05:42:06,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a53fe2d9f/4b1b51ab52464157bc79acbdd539c6c0 [2022-01-11 05:42:06,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 05:42:06,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 05:42:06,636 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 05:42:06,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 05:42:06,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 05:42:06,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:42:06" (1/1) ... [2022-01-11 05:42:06,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fbc66c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:06, skipping insertion in model container [2022-01-11 05:42:06,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 05:42:06" (1/1) ... [2022-01-11 05:42:06,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 05:42:06,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:42:06,851 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product33.cil.c[1543,1556] [2022-01-11 05:42:07,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:42:07,129 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 05:42:07,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 05:42:07,145 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product33.cil.c[1543,1556] [2022-01-11 05:42:07,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:42:07,227 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 05:42:07,235 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product33.cil.c[1543,1556] [2022-01-11 05:42:07,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 05:42:07,302 INFO L208 MainTranslator]: Completed translation [2022-01-11 05:42:07,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:07 WrapperNode [2022-01-11 05:42:07,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 05:42:07,304 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 05:42:07,304 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 05:42:07,304 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 05:42:07,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:07" (1/1) ... [2022-01-11 05:42:07,342 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:07" (1/1) ... [2022-01-11 05:42:07,422 INFO L137 Inliner]: procedures = 136, calls = 229, calls flagged for inlining = 138, calls inlined = 203, statements flattened = 3050 [2022-01-11 05:42:07,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 05:42:07,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 05:42:07,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 05:42:07,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 05:42:07,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:07" (1/1) ... [2022-01-11 05:42:07,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:07" (1/1) ... [2022-01-11 05:42:07,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:07" (1/1) ... [2022-01-11 05:42:07,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:07" (1/1) ... [2022-01-11 05:42:07,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:07" (1/1) ... [2022-01-11 05:42:07,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:07" (1/1) ... [2022-01-11 05:42:07,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:07" (1/1) ... [2022-01-11 05:42:07,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 05:42:07,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 05:42:07,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 05:42:07,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 05:42:07,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:07" (1/1) ... [2022-01-11 05:42:07,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 05:42:07,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 05:42:07,583 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 05:42:07,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 05:42:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-11 05:42:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 05:42:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 05:42:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 05:42:07,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 05:42:07,775 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 05:42:07,776 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 05:42:09,010 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 05:42:09,018 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 05:42:09,018 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-11 05:42:09,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:42:09 BoogieIcfgContainer [2022-01-11 05:42:09,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 05:42:09,021 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 05:42:09,021 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 05:42:09,022 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 05:42:09,024 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:42:09" (1/1) ... [2022-01-11 05:42:09,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:42:09 BasicIcfg [2022-01-11 05:42:09,311 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 05:42:09,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 05:42:09,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 05:42:09,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 05:42:09,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 05:42:06" (1/4) ... [2022-01-11 05:42:09,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd1cb03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:42:09, skipping insertion in model container [2022-01-11 05:42:09,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 05:42:07" (2/4) ... [2022-01-11 05:42:09,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd1cb03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 05:42:09, skipping insertion in model container [2022-01-11 05:42:09,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 05:42:09" (3/4) ... [2022-01-11 05:42:09,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd1cb03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 05:42:09, skipping insertion in model container [2022-01-11 05:42:09,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 05:42:09" (4/4) ... [2022-01-11 05:42:09,316 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product33.cil.cTransformedIcfg [2022-01-11 05:42:09,319 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 05:42:09,319 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 05:42:09,385 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 05:42:09,390 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 05:42:09,390 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 05:42:09,406 INFO L276 IsEmpty]: Start isEmpty. Operand has 667 states, 664 states have (on average 1.6792168674698795) internal successors, (1115), 666 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:09,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-11 05:42:09,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:09,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:09,420 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:09,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:09,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1224795266, now seen corresponding path program 1 times [2022-01-11 05:42:09,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:09,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921701765] [2022-01-11 05:42:09,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:09,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:09,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:09,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:09,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921701765] [2022-01-11 05:42:09,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921701765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:09,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:09,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 05:42:09,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338900466] [2022-01-11 05:42:09,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:09,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 05:42:09,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:09,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 05:42:09,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:42:09,831 INFO L87 Difference]: Start difference. First operand has 667 states, 664 states have (on average 1.6792168674698795) internal successors, (1115), 666 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:09,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:09,899 INFO L93 Difference]: Finished difference Result 1068 states and 1762 transitions. [2022-01-11 05:42:09,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 05:42:09,901 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-11 05:42:09,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:09,911 INFO L225 Difference]: With dead ends: 1068 [2022-01-11 05:42:09,912 INFO L226 Difference]: Without dead ends: 591 [2022-01-11 05:42:09,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 05:42:09,918 INFO L933 BasicCegarLoop]: 1109 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, 1109 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:09,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:42:09,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-01-11 05:42:09,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2022-01-11 05:42:09,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 589 states have (on average 1.696095076400679) internal successors, (999), 590 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:09,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 999 transitions. [2022-01-11 05:42:09,979 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 999 transitions. Word has length 69 [2022-01-11 05:42:09,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:09,979 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 999 transitions. [2022-01-11 05:42:09,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:09,980 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 999 transitions. [2022-01-11 05:42:09,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 05:42:09,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:09,983 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:09,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 05:42:09,983 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:09,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:09,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1210004464, now seen corresponding path program 1 times [2022-01-11 05:42:09,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:09,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430047068] [2022-01-11 05:42:09,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:09,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:10,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:10,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:10,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430047068] [2022-01-11 05:42:10,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430047068] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:10,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:10,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:42:10,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308855750] [2022-01-11 05:42:10,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:10,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:42:10,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:10,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:42:10,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:42:10,235 INFO L87 Difference]: Start difference. First operand 591 states and 999 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:10,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:10,310 INFO L93 Difference]: Finished difference Result 1163 states and 1970 transitions. [2022-01-11 05:42:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:42:10,310 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-11 05:42:10,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:10,313 INFO L225 Difference]: With dead ends: 1163 [2022-01-11 05:42:10,313 INFO L226 Difference]: Without dead ends: 591 [2022-01-11 05:42:10,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:42:10,316 INFO L933 BasicCegarLoop]: 979 mSDtfsCounter, 974 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:10,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [974 Valid, 992 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:42:10,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-01-11 05:42:10,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2022-01-11 05:42:10,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 589 states have (on average 1.6926994906621393) internal successors, (997), 590 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:10,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 997 transitions. [2022-01-11 05:42:10,342 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 997 transitions. Word has length 70 [2022-01-11 05:42:10,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:10,343 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 997 transitions. [2022-01-11 05:42:10,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:10,343 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 997 transitions. [2022-01-11 05:42:10,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-11 05:42:10,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:10,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:10,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 05:42:10,346 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:10,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:10,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1236516752, now seen corresponding path program 1 times [2022-01-11 05:42:10,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:10,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732656250] [2022-01-11 05:42:10,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:10,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:10,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:10,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:10,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732656250] [2022-01-11 05:42:10,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732656250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:10,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:10,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:42:10,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287792626] [2022-01-11 05:42:10,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:10,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:42:10,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:10,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:42:10,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:10,477 INFO L87 Difference]: Start difference. First operand 591 states and 997 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:10,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:10,710 INFO L93 Difference]: Finished difference Result 2823 states and 4781 transitions. [2022-01-11 05:42:10,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:42:10,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-11 05:42:10,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:10,721 INFO L225 Difference]: With dead ends: 2823 [2022-01-11 05:42:10,721 INFO L226 Difference]: Without dead ends: 2256 [2022-01-11 05:42:10,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:42:10,730 INFO L933 BasicCegarLoop]: 1917 mSDtfsCounter, 4768 mSDsluCounter, 2863 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4768 SdHoareTripleChecker+Valid, 4780 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:10,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4768 Valid, 4780 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:42:10,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2022-01-11 05:42:10,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 591. [2022-01-11 05:42:10,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 589 states have (on average 1.6910016977928692) internal successors, (996), 590 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:10,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 996 transitions. [2022-01-11 05:42:10,791 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 996 transitions. Word has length 72 [2022-01-11 05:42:10,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:10,793 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 996 transitions. [2022-01-11 05:42:10,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:10,793 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 996 transitions. [2022-01-11 05:42:10,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 05:42:10,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:10,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:10,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 05:42:10,801 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:10,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:10,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1439762216, now seen corresponding path program 1 times [2022-01-11 05:42:10,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:10,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648316327] [2022-01-11 05:42:10,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:10,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:10,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:10,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:10,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648316327] [2022-01-11 05:42:10,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648316327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:10,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:10,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 05:42:10,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132365965] [2022-01-11 05:42:10,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:10,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 05:42:10,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:10,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 05:42:10,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:42:10,930 INFO L87 Difference]: Start difference. First operand 591 states and 996 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:10,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:10,977 INFO L93 Difference]: Finished difference Result 1167 states and 1970 transitions. [2022-01-11 05:42:10,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 05:42:10,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-01-11 05:42:10,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:10,980 INFO L225 Difference]: With dead ends: 1167 [2022-01-11 05:42:10,980 INFO L226 Difference]: Without dead ends: 605 [2022-01-11 05:42:10,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 05:42:10,989 INFO L933 BasicCegarLoop]: 1010 mSDtfsCounter, 975 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:10,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 1032 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:42:10,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-01-11 05:42:11,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 591. [2022-01-11 05:42:11,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 589 states have (on average 1.6893039049235994) internal successors, (995), 590 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:11,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 995 transitions. [2022-01-11 05:42:11,015 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 995 transitions. Word has length 73 [2022-01-11 05:42:11,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:11,015 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 995 transitions. [2022-01-11 05:42:11,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:11,015 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 995 transitions. [2022-01-11 05:42:11,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-11 05:42:11,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:11,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:11,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 05:42:11,017 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:11,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:11,020 INFO L85 PathProgramCache]: Analyzing trace with hash 561893231, now seen corresponding path program 1 times [2022-01-11 05:42:11,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:11,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609285241] [2022-01-11 05:42:11,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:11,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:11,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:11,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:11,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609285241] [2022-01-11 05:42:11,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609285241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:11,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:11,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:42:11,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309639140] [2022-01-11 05:42:11,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:11,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:42:11,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:11,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:42:11,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:11,134 INFO L87 Difference]: Start difference. First operand 591 states and 995 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:11,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:11,286 INFO L93 Difference]: Finished difference Result 1707 states and 2885 transitions. [2022-01-11 05:42:11,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:42:11,287 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-01-11 05:42:11,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:11,290 INFO L225 Difference]: With dead ends: 1707 [2022-01-11 05:42:11,290 INFO L226 Difference]: Without dead ends: 1150 [2022-01-11 05:42:11,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:42:11,292 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 4691 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4691 SdHoareTripleChecker+Valid, 2022 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:11,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4691 Valid, 2022 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:42:11,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2022-01-11 05:42:11,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 591. [2022-01-11 05:42:11,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 589 states have (on average 1.6859083191850595) internal successors, (993), 590 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:11,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 993 transitions. [2022-01-11 05:42:11,328 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 993 transitions. Word has length 74 [2022-01-11 05:42:11,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:11,328 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 993 transitions. [2022-01-11 05:42:11,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:11,329 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 993 transitions. [2022-01-11 05:42:11,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 05:42:11,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:11,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:11,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 05:42:11,330 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:11,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:11,330 INFO L85 PathProgramCache]: Analyzing trace with hash -628179150, now seen corresponding path program 1 times [2022-01-11 05:42:11,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:11,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020497597] [2022-01-11 05:42:11,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:11,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:11,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:11,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020497597] [2022-01-11 05:42:11,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020497597] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:11,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:11,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:42:11,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835493743] [2022-01-11 05:42:11,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:11,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:42:11,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:11,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:42:11,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:42:11,425 INFO L87 Difference]: Start difference. First operand 591 states and 993 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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) [2022-01-11 05:42:11,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:11,834 INFO L93 Difference]: Finished difference Result 4084 states and 6787 transitions. [2022-01-11 05:42:11,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:42:11,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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 [2022-01-11 05:42:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:11,848 INFO L225 Difference]: With dead ends: 4084 [2022-01-11 05:42:11,848 INFO L226 Difference]: Without dead ends: 3776 [2022-01-11 05:42:11,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:42:11,851 INFO L933 BasicCegarLoop]: 1643 mSDtfsCounter, 7103 mSDsluCounter, 6213 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7103 SdHoareTripleChecker+Valid, 7856 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:11,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7103 Valid, 7856 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:42:11,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-01-11 05:42:11,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 1048. [2022-01-11 05:42:11,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1046 states have (on average 1.6854684512428297) internal successors, (1763), 1047 states have internal predecessors, (1763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1763 transitions. [2022-01-11 05:42:11,932 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1763 transitions. Word has length 76 [2022-01-11 05:42:11,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:11,932 INFO L470 AbstractCegarLoop]: Abstraction has 1048 states and 1763 transitions. [2022-01-11 05:42:11,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 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) [2022-01-11 05:42:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1763 transitions. [2022-01-11 05:42:11,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 05:42:11,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:11,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:11,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 05:42:11,937 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:11,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:11,937 INFO L85 PathProgramCache]: Analyzing trace with hash -448480503, now seen corresponding path program 1 times [2022-01-11 05:42:11,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:11,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593658267] [2022-01-11 05:42:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:11,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:12,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:12,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593658267] [2022-01-11 05:42:12,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593658267] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:12,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:12,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:42:12,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911743587] [2022-01-11 05:42:12,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:12,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:42:12,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:12,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:42:12,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:12,060 INFO L87 Difference]: Start difference. First operand 1048 states and 1763 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2022-01-11 05:42:12,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:12,196 INFO L93 Difference]: Finished difference Result 1973 states and 3261 transitions. [2022-01-11 05:42:12,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:42:12,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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 [2022-01-11 05:42:12,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:12,201 INFO L225 Difference]: With dead ends: 1973 [2022-01-11 05:42:12,201 INFO L226 Difference]: Without dead ends: 1463 [2022-01-11 05:42:12,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:42:12,204 INFO L933 BasicCegarLoop]: 979 mSDtfsCounter, 2855 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2855 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:12,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2855 Valid, 2321 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:42:12,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2022-01-11 05:42:12,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1048. [2022-01-11 05:42:12,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1046 states have (on average 1.681644359464627) internal successors, (1759), 1047 states have internal predecessors, (1759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:12,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1759 transitions. [2022-01-11 05:42:12,268 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1759 transitions. Word has length 77 [2022-01-11 05:42:12,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:12,269 INFO L470 AbstractCegarLoop]: Abstraction has 1048 states and 1759 transitions. [2022-01-11 05:42:12,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2022-01-11 05:42:12,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1759 transitions. [2022-01-11 05:42:12,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 05:42:12,270 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:12,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:12,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 05:42:12,271 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:12,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:12,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1960987870, now seen corresponding path program 1 times [2022-01-11 05:42:12,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:12,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583129549] [2022-01-11 05:42:12,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:12,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:12,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:12,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:12,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583129549] [2022-01-11 05:42:12,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583129549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:12,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:12,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:42:12,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972924988] [2022-01-11 05:42:12,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:12,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:42:12,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:12,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:42:12,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:12,344 INFO L87 Difference]: Start difference. First operand 1048 states and 1759 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2022-01-11 05:42:12,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:12,543 INFO L93 Difference]: Finished difference Result 3021 states and 5106 transitions. [2022-01-11 05:42:12,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:42:12,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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 [2022-01-11 05:42:12,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:12,549 INFO L225 Difference]: With dead ends: 3021 [2022-01-11 05:42:12,549 INFO L226 Difference]: Without dead ends: 2010 [2022-01-11 05:42:12,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 05:42:12,551 INFO L933 BasicCegarLoop]: 1885 mSDtfsCounter, 2910 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2910 SdHoareTripleChecker+Valid, 2829 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:12,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2910 Valid, 2829 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:42:12,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2022-01-11 05:42:12,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 1048. [2022-01-11 05:42:12,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1046 states have (on average 1.6797323135755258) internal successors, (1757), 1047 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:12,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1757 transitions. [2022-01-11 05:42:12,616 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1757 transitions. Word has length 77 [2022-01-11 05:42:12,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:12,616 INFO L470 AbstractCegarLoop]: Abstraction has 1048 states and 1757 transitions. [2022-01-11 05:42:12,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 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) [2022-01-11 05:42:12,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1757 transitions. [2022-01-11 05:42:12,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 05:42:12,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:12,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:12,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 05:42:12,618 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:12,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:12,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1167409114, now seen corresponding path program 1 times [2022-01-11 05:42:12,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:12,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042631063] [2022-01-11 05:42:12,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:12,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:12,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:12,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042631063] [2022-01-11 05:42:12,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042631063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:12,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:12,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:42:12,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145403161] [2022-01-11 05:42:12,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:12,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:42:12,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:12,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:42:12,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:42:12,722 INFO L87 Difference]: Start difference. First operand 1048 states and 1757 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 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) [2022-01-11 05:42:13,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:13,649 INFO L93 Difference]: Finished difference Result 5084 states and 8218 transitions. [2022-01-11 05:42:13,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 05:42:13,649 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 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 [2022-01-11 05:42:13,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:13,663 INFO L225 Difference]: With dead ends: 5084 [2022-01-11 05:42:13,663 INFO L226 Difference]: Without dead ends: 4616 [2022-01-11 05:42:13,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-11 05:42:13,665 INFO L933 BasicCegarLoop]: 1298 mSDtfsCounter, 10284 mSDsluCounter, 7293 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10284 SdHoareTripleChecker+Valid, 8591 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:13,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10284 Valid, 8591 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 05:42:13,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4616 states. [2022-01-11 05:42:13,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4616 to 1931. [2022-01-11 05:42:13,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1929 states have (on average 1.689476412649041) internal successors, (3259), 1930 states have internal predecessors, (3259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:13,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 3259 transitions. [2022-01-11 05:42:13,854 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 3259 transitions. Word has length 78 [2022-01-11 05:42:13,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:13,855 INFO L470 AbstractCegarLoop]: Abstraction has 1931 states and 3259 transitions. [2022-01-11 05:42:13,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 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) [2022-01-11 05:42:13,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 3259 transitions. [2022-01-11 05:42:13,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 05:42:13,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:13,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:13,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 05:42:13,857 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:13,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:13,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1296951456, now seen corresponding path program 1 times [2022-01-11 05:42:13,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:13,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42825464] [2022-01-11 05:42:13,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:13,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:13,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:14,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:14,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:14,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42825464] [2022-01-11 05:42:14,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42825464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:14,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:14,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:42:14,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085024212] [2022-01-11 05:42:14,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:14,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-11 05:42:14,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:14,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-11 05:42:14,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:42:14,007 INFO L87 Difference]: Start difference. First operand 1931 states and 3259 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 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) [2022-01-11 05:42:15,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:15,327 INFO L93 Difference]: Finished difference Result 8292 states and 13440 transitions. [2022-01-11 05:42:15,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 05:42:15,328 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 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 [2022-01-11 05:42:15,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:15,352 INFO L225 Difference]: With dead ends: 8292 [2022-01-11 05:42:15,352 INFO L226 Difference]: Without dead ends: 7465 [2022-01-11 05:42:15,356 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-11 05:42:15,356 INFO L933 BasicCegarLoop]: 1158 mSDtfsCounter, 8444 mSDsluCounter, 7500 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8444 SdHoareTripleChecker+Valid, 8658 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:15,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8444 Valid, 8658 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 05:42:15,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7465 states. [2022-01-11 05:42:15,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7465 to 3702. [2022-01-11 05:42:15,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3702 states, 3700 states have (on average 1.6948648648648648) internal successors, (6271), 3701 states have internal predecessors, (6271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:15,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3702 states to 3702 states and 6271 transitions. [2022-01-11 05:42:15,730 INFO L78 Accepts]: Start accepts. Automaton has 3702 states and 6271 transitions. Word has length 79 [2022-01-11 05:42:15,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:15,731 INFO L470 AbstractCegarLoop]: Abstraction has 3702 states and 6271 transitions. [2022-01-11 05:42:15,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 8 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) [2022-01-11 05:42:15,731 INFO L276 IsEmpty]: Start isEmpty. Operand 3702 states and 6271 transitions. [2022-01-11 05:42:15,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 05:42:15,735 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:15,735 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:15,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 05:42:15,736 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:15,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:15,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1308267583, now seen corresponding path program 1 times [2022-01-11 05:42:15,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:15,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916751319] [2022-01-11 05:42:15,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:15,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:15,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:15,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916751319] [2022-01-11 05:42:15,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916751319] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:15,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:15,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:42:15,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501332618] [2022-01-11 05:42:15,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:15,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:42:15,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:15,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:42:15,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:42:15,846 INFO L87 Difference]: Start difference. First operand 3702 states and 6271 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 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) [2022-01-11 05:42:16,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:16,811 INFO L93 Difference]: Finished difference Result 10402 states and 17413 transitions. [2022-01-11 05:42:16,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:42:16,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 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 [2022-01-11 05:42:16,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:16,889 INFO L225 Difference]: With dead ends: 10402 [2022-01-11 05:42:16,889 INFO L226 Difference]: Without dead ends: 9704 [2022-01-11 05:42:16,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:42:16,897 INFO L933 BasicCegarLoop]: 1919 mSDtfsCounter, 5370 mSDsluCounter, 6310 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5370 SdHoareTripleChecker+Valid, 8229 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:16,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5370 Valid, 8229 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:42:16,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9704 states. [2022-01-11 05:42:17,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9704 to 3801. [2022-01-11 05:42:17,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3801 states, 3799 states have (on average 1.6922874440642275) internal successors, (6429), 3800 states have internal predecessors, (6429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:17,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3801 states to 3801 states and 6429 transitions. [2022-01-11 05:42:17,415 INFO L78 Accepts]: Start accepts. Automaton has 3801 states and 6429 transitions. Word has length 79 [2022-01-11 05:42:17,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:17,415 INFO L470 AbstractCegarLoop]: Abstraction has 3801 states and 6429 transitions. [2022-01-11 05:42:17,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 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) [2022-01-11 05:42:17,416 INFO L276 IsEmpty]: Start isEmpty. Operand 3801 states and 6429 transitions. [2022-01-11 05:42:17,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 05:42:17,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:17,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:17,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 05:42:17,420 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:17,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:17,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1479318865, now seen corresponding path program 1 times [2022-01-11 05:42:17,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:17,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410869990] [2022-01-11 05:42:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:17,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:17,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:17,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:17,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410869990] [2022-01-11 05:42:17,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410869990] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:17,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:17,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:42:17,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297924597] [2022-01-11 05:42:17,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:17,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:42:17,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:17,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:42:17,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:17,516 INFO L87 Difference]: Start difference. First operand 3801 states and 6429 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 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) [2022-01-11 05:42:18,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:18,849 INFO L93 Difference]: Finished difference Result 12749 states and 20517 transitions. [2022-01-11 05:42:18,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:42:18,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 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 [2022-01-11 05:42:18,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:18,865 INFO L225 Difference]: With dead ends: 12749 [2022-01-11 05:42:18,865 INFO L226 Difference]: Without dead ends: 11488 [2022-01-11 05:42:18,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:42:18,868 INFO L933 BasicCegarLoop]: 989 mSDtfsCounter, 3635 mSDsluCounter, 3640 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3635 SdHoareTripleChecker+Valid, 4629 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:18,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3635 Valid, 4629 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:42:18,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11488 states. [2022-01-11 05:42:19,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11488 to 5398. [2022-01-11 05:42:19,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5398 states, 5396 states have (on average 1.6575240919199408) internal successors, (8944), 5397 states have internal predecessors, (8944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:19,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5398 states to 5398 states and 8944 transitions. [2022-01-11 05:42:19,347 INFO L78 Accepts]: Start accepts. Automaton has 5398 states and 8944 transitions. Word has length 79 [2022-01-11 05:42:19,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:19,347 INFO L470 AbstractCegarLoop]: Abstraction has 5398 states and 8944 transitions. [2022-01-11 05:42:19,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 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) [2022-01-11 05:42:19,348 INFO L276 IsEmpty]: Start isEmpty. Operand 5398 states and 8944 transitions. [2022-01-11 05:42:19,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 05:42:19,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:19,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:19,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 05:42:19,352 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:19,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:19,353 INFO L85 PathProgramCache]: Analyzing trace with hash 480268877, now seen corresponding path program 1 times [2022-01-11 05:42:19,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:19,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570829452] [2022-01-11 05:42:19,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:19,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:19,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:19,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:19,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570829452] [2022-01-11 05:42:19,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570829452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:19,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:19,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 05:42:19,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761522582] [2022-01-11 05:42:19,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:19,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:42:19,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:19,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:42:19,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:19,543 INFO L87 Difference]: Start difference. First operand 5398 states and 8944 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 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) [2022-01-11 05:42:21,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:21,164 INFO L93 Difference]: Finished difference Result 13877 states and 21959 transitions. [2022-01-11 05:42:21,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 05:42:21,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 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 [2022-01-11 05:42:21,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:21,184 INFO L225 Difference]: With dead ends: 13877 [2022-01-11 05:42:21,184 INFO L226 Difference]: Without dead ends: 11875 [2022-01-11 05:42:21,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:42:21,190 INFO L933 BasicCegarLoop]: 1307 mSDtfsCounter, 2052 mSDsluCounter, 3815 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2052 SdHoareTripleChecker+Valid, 5122 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:21,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2052 Valid, 5122 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:42:21,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11875 states. [2022-01-11 05:42:21,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11875 to 5432. [2022-01-11 05:42:21,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5432 states, 5430 states have (on average 1.6534069981583794) internal successors, (8978), 5431 states have internal predecessors, (8978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:21,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5432 states to 5432 states and 8978 transitions. [2022-01-11 05:42:21,759 INFO L78 Accepts]: Start accepts. Automaton has 5432 states and 8978 transitions. Word has length 80 [2022-01-11 05:42:21,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:21,759 INFO L470 AbstractCegarLoop]: Abstraction has 5432 states and 8978 transitions. [2022-01-11 05:42:21,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 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) [2022-01-11 05:42:21,760 INFO L276 IsEmpty]: Start isEmpty. Operand 5432 states and 8978 transitions. [2022-01-11 05:42:21,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 05:42:21,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:21,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:21,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 05:42:21,769 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:21,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:21,770 INFO L85 PathProgramCache]: Analyzing trace with hash -393947411, now seen corresponding path program 1 times [2022-01-11 05:42:21,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:21,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580428997] [2022-01-11 05:42:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:21,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:21,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:21,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:21,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580428997] [2022-01-11 05:42:21,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580428997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:21,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:21,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-11 05:42:21,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987370480] [2022-01-11 05:42:21,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:21,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 05:42:21,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:21,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 05:42:21,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-11 05:42:21,914 INFO L87 Difference]: Start difference. First operand 5432 states and 8978 transitions. Second operand has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 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) [2022-01-11 05:42:22,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:22,890 INFO L93 Difference]: Finished difference Result 9367 states and 15011 transitions. [2022-01-11 05:42:22,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-11 05:42:22,890 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 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 [2022-01-11 05:42:22,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:22,901 INFO L225 Difference]: With dead ends: 9367 [2022-01-11 05:42:22,901 INFO L226 Difference]: Without dead ends: 6467 [2022-01-11 05:42:22,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=454, Unknown=0, NotChecked=0, Total=650 [2022-01-11 05:42:22,905 INFO L933 BasicCegarLoop]: 966 mSDtfsCounter, 3935 mSDsluCounter, 5018 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3935 SdHoareTripleChecker+Valid, 5984 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:22,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3935 Valid, 5984 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:42:22,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6467 states. [2022-01-11 05:42:23,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6467 to 5400. [2022-01-11 05:42:23,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5400 states, 5398 states have (on average 1.6483882919599853) internal successors, (8898), 5399 states have internal predecessors, (8898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:23,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5400 states to 5400 states and 8898 transitions. [2022-01-11 05:42:23,499 INFO L78 Accepts]: Start accepts. Automaton has 5400 states and 8898 transitions. Word has length 80 [2022-01-11 05:42:23,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:23,500 INFO L470 AbstractCegarLoop]: Abstraction has 5400 states and 8898 transitions. [2022-01-11 05:42:23,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.0) internal successors, (80), 10 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) [2022-01-11 05:42:23,500 INFO L276 IsEmpty]: Start isEmpty. Operand 5400 states and 8898 transitions. [2022-01-11 05:42:23,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 05:42:23,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:23,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:23,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 05:42:23,507 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:23,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:23,508 INFO L85 PathProgramCache]: Analyzing trace with hash -89162417, now seen corresponding path program 1 times [2022-01-11 05:42:23,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:23,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615147655] [2022-01-11 05:42:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:23,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:23,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:23,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:23,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:23,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615147655] [2022-01-11 05:42:23,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615147655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:23,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:23,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:42:23,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350840661] [2022-01-11 05:42:23,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:23,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:42:23,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:23,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:42:23,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:42:23,595 INFO L87 Difference]: Start difference. First operand 5400 states and 8898 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:25,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:25,434 INFO L93 Difference]: Finished difference Result 15768 states and 24882 transitions. [2022-01-11 05:42:25,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 05:42:25,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-11 05:42:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:25,454 INFO L225 Difference]: With dead ends: 15768 [2022-01-11 05:42:25,454 INFO L226 Difference]: Without dead ends: 12540 [2022-01-11 05:42:25,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:25,462 INFO L933 BasicCegarLoop]: 1156 mSDtfsCounter, 1205 mSDsluCounter, 2227 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 3383 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:25,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1205 Valid, 3383 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:42:25,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12540 states. [2022-01-11 05:42:26,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12540 to 5424. [2022-01-11 05:42:26,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5424 states, 5422 states have (on average 1.6455182589450388) internal successors, (8922), 5423 states have internal predecessors, (8922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:26,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 8922 transitions. [2022-01-11 05:42:26,114 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 8922 transitions. Word has length 83 [2022-01-11 05:42:26,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:26,114 INFO L470 AbstractCegarLoop]: Abstraction has 5424 states and 8922 transitions. [2022-01-11 05:42:26,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:26,114 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 8922 transitions. [2022-01-11 05:42:26,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 05:42:26,119 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:26,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:26,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 05:42:26,120 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:26,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:26,120 INFO L85 PathProgramCache]: Analyzing trace with hash 674183239, now seen corresponding path program 1 times [2022-01-11 05:42:26,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:26,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086431186] [2022-01-11 05:42:26,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:26,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:26,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:26,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086431186] [2022-01-11 05:42:26,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086431186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:26,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:26,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:42:26,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018384394] [2022-01-11 05:42:26,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:26,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 05:42:26,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:26,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 05:42:26,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:42:26,208 INFO L87 Difference]: Start difference. First operand 5424 states and 8922 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:29,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:29,438 INFO L93 Difference]: Finished difference Result 20672 states and 32447 transitions. [2022-01-11 05:42:29,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-11 05:42:29,438 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-11 05:42:29,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:29,463 INFO L225 Difference]: With dead ends: 20672 [2022-01-11 05:42:29,463 INFO L226 Difference]: Without dead ends: 17732 [2022-01-11 05:42:29,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2022-01-11 05:42:29,470 INFO L933 BasicCegarLoop]: 1724 mSDtfsCounter, 5875 mSDsluCounter, 6879 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5875 SdHoareTripleChecker+Valid, 8603 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:29,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5875 Valid, 8603 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:42:29,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17732 states. [2022-01-11 05:42:30,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17732 to 6380. [2022-01-11 05:42:30,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6380 states, 6378 states have (on average 1.6334274067105676) internal successors, (10418), 6379 states have internal predecessors, (10418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:30,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6380 states to 6380 states and 10418 transitions. [2022-01-11 05:42:30,365 INFO L78 Accepts]: Start accepts. Automaton has 6380 states and 10418 transitions. Word has length 83 [2022-01-11 05:42:30,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:30,365 INFO L470 AbstractCegarLoop]: Abstraction has 6380 states and 10418 transitions. [2022-01-11 05:42:30,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:30,366 INFO L276 IsEmpty]: Start isEmpty. Operand 6380 states and 10418 transitions. [2022-01-11 05:42:30,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 05:42:30,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:30,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:30,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 05:42:30,370 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:30,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:30,371 INFO L85 PathProgramCache]: Analyzing trace with hash 2088498519, now seen corresponding path program 1 times [2022-01-11 05:42:30,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:30,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562962729] [2022-01-11 05:42:30,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:30,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:30,424 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:30,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562962729] [2022-01-11 05:42:30,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562962729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:30,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:30,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:42:30,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844453694] [2022-01-11 05:42:30,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:30,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 05:42:30,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:30,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 05:42:30,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 05:42:30,425 INFO L87 Difference]: Start difference. First operand 6380 states and 10418 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:31,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:31,521 INFO L93 Difference]: Finished difference Result 8638 states and 13889 transitions. [2022-01-11 05:42:31,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 05:42:31,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-11 05:42:31,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:31,534 INFO L225 Difference]: With dead ends: 8638 [2022-01-11 05:42:31,535 INFO L226 Difference]: Without dead ends: 7594 [2022-01-11 05:42:31,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:31,541 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 1332 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:31,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1332 Valid, 2184 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:42:31,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7594 states. [2022-01-11 05:42:32,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7594 to 6380. [2022-01-11 05:42:32,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6380 states, 6378 states have (on average 1.6331138287864535) internal successors, (10416), 6379 states have internal predecessors, (10416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:32,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6380 states to 6380 states and 10416 transitions. [2022-01-11 05:42:32,431 INFO L78 Accepts]: Start accepts. Automaton has 6380 states and 10416 transitions. Word has length 83 [2022-01-11 05:42:32,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:32,431 INFO L470 AbstractCegarLoop]: Abstraction has 6380 states and 10416 transitions. [2022-01-11 05:42:32,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:32,432 INFO L276 IsEmpty]: Start isEmpty. Operand 6380 states and 10416 transitions. [2022-01-11 05:42:32,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 05:42:32,436 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:32,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:32,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 05:42:32,436 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:32,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:32,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1063804598, now seen corresponding path program 1 times [2022-01-11 05:42:32,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:32,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893602437] [2022-01-11 05:42:32,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:32,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:32,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:32,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:32,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:32,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893602437] [2022-01-11 05:42:32,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893602437] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:32,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:32,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:42:32,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061377890] [2022-01-11 05:42:32,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:32,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:42:32,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:32,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:42:32,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:32,516 INFO L87 Difference]: Start difference. First operand 6380 states and 10416 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:37,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:37,961 INFO L93 Difference]: Finished difference Result 34722 states and 54532 transitions. [2022-01-11 05:42:37,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:42:37,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-11 05:42:37,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:38,001 INFO L225 Difference]: With dead ends: 34722 [2022-01-11 05:42:38,001 INFO L226 Difference]: Without dead ends: 30592 [2022-01-11 05:42:38,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:42:38,010 INFO L933 BasicCegarLoop]: 1054 mSDtfsCounter, 3929 mSDsluCounter, 3717 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3929 SdHoareTripleChecker+Valid, 4771 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:38,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3929 Valid, 4771 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 05:42:38,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30592 states. [2022-01-11 05:42:39,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30592 to 12336. [2022-01-11 05:42:39,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12336 states, 12334 states have (on average 1.6348305497000162) internal successors, (20164), 12335 states have internal predecessors, (20164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:39,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12336 states to 12336 states and 20164 transitions. [2022-01-11 05:42:39,780 INFO L78 Accepts]: Start accepts. Automaton has 12336 states and 20164 transitions. Word has length 83 [2022-01-11 05:42:39,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:39,780 INFO L470 AbstractCegarLoop]: Abstraction has 12336 states and 20164 transitions. [2022-01-11 05:42:39,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:39,780 INFO L276 IsEmpty]: Start isEmpty. Operand 12336 states and 20164 transitions. [2022-01-11 05:42:39,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-11 05:42:39,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:39,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:39,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 05:42:39,788 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:39,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:39,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1827150254, now seen corresponding path program 1 times [2022-01-11 05:42:39,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:39,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987027611] [2022-01-11 05:42:39,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:39,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:39,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:39,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:39,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987027611] [2022-01-11 05:42:39,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987027611] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:39,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:39,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 05:42:39,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333818669] [2022-01-11 05:42:39,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:39,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 05:42:39,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:39,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 05:42:39,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 05:42:39,861 INFO L87 Difference]: Start difference. First operand 12336 states and 20164 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:44,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:44,820 INFO L93 Difference]: Finished difference Result 33072 states and 51544 transitions. [2022-01-11 05:42:44,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 05:42:44,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-01-11 05:42:44,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:44,861 INFO L225 Difference]: With dead ends: 33072 [2022-01-11 05:42:44,861 INFO L226 Difference]: Without dead ends: 25940 [2022-01-11 05:42:44,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 05:42:44,873 INFO L933 BasicCegarLoop]: 1984 mSDtfsCounter, 2595 mSDsluCounter, 4089 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2595 SdHoareTripleChecker+Valid, 6073 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:44,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2595 Valid, 6073 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:42:44,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25940 states. [2022-01-11 05:42:46,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25940 to 13248. [2022-01-11 05:42:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13248 states, 13246 states have (on average 1.6189038200211385) internal successors, (21444), 13247 states have internal predecessors, (21444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:47,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13248 states to 13248 states and 21444 transitions. [2022-01-11 05:42:47,035 INFO L78 Accepts]: Start accepts. Automaton has 13248 states and 21444 transitions. Word has length 83 [2022-01-11 05:42:47,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:42:47,036 INFO L470 AbstractCegarLoop]: Abstraction has 13248 states and 21444 transitions. [2022-01-11 05:42:47,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:47,036 INFO L276 IsEmpty]: Start isEmpty. Operand 13248 states and 21444 transitions. [2022-01-11 05:42:47,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 05:42:47,059 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:42:47,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:42:47,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 05:42:47,059 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:42:47,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:42:47,060 INFO L85 PathProgramCache]: Analyzing trace with hash 763300051, now seen corresponding path program 1 times [2022-01-11 05:42:47,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:42:47,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747195460] [2022-01-11 05:42:47,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:42:47,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:42:47,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:42:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:42:47,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:42:47,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747195460] [2022-01-11 05:42:47,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747195460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:42:47,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:42:47,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 05:42:47,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790493402] [2022-01-11 05:42:47,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:42:47,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 05:42:47,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:42:47,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 05:42:47,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 05:42:47,165 INFO L87 Difference]: Start difference. First operand 13248 states and 21444 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:42:59,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:42:59,118 INFO L93 Difference]: Finished difference Result 78834 states and 126346 transitions. [2022-01-11 05:42:59,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 05:42:59,119 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-11 05:42:59,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:42:59,241 INFO L225 Difference]: With dead ends: 78834 [2022-01-11 05:42:59,241 INFO L226 Difference]: Without dead ends: 71750 [2022-01-11 05:42:59,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-11 05:42:59,269 INFO L933 BasicCegarLoop]: 1505 mSDtfsCounter, 5483 mSDsluCounter, 4492 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5483 SdHoareTripleChecker+Valid, 5997 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 05:42:59,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5483 Valid, 5997 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 05:42:59,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71750 states. [2022-01-11 05:43:03,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71750 to 26384. [2022-01-11 05:43:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26384 states, 26382 states have (on average 1.6184519748313244) internal successors, (42698), 26383 states have internal predecessors, (42698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:43:03,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26384 states to 26384 states and 42698 transitions. [2022-01-11 05:43:03,743 INFO L78 Accepts]: Start accepts. Automaton has 26384 states and 42698 transitions. Word has length 84 [2022-01-11 05:43:03,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 05:43:03,743 INFO L470 AbstractCegarLoop]: Abstraction has 26384 states and 42698 transitions. [2022-01-11 05:43:03,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:43:03,743 INFO L276 IsEmpty]: Start isEmpty. Operand 26384 states and 42698 transitions. [2022-01-11 05:43:03,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 05:43:03,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 05:43:03,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 05:43:03,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 05:43:03,758 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 05:43:03,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 05:43:03,758 INFO L85 PathProgramCache]: Analyzing trace with hash 744025792, now seen corresponding path program 1 times [2022-01-11 05:43:03,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 05:43:03,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085829742] [2022-01-11 05:43:03,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 05:43:03,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 05:43:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 05:43:03,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 05:43:03,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 05:43:03,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085829742] [2022-01-11 05:43:03,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085829742] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 05:43:03,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 05:43:03,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-11 05:43:03,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502728259] [2022-01-11 05:43:03,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 05:43:03,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 05:43:03,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 05:43:03,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 05:43:03,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-11 05:43:03,839 INFO L87 Difference]: Start difference. First operand 26384 states and 42698 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 05:43:09,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 05:43:09,997 INFO L93 Difference]: Finished difference Result 50394 states and 79249 transitions. [2022-01-11 05:43:09,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 05:43:09,997 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-01-11 05:43:09,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 05:43:10,045 INFO L225 Difference]: With dead ends: 50394 [2022-01-11 05:43:10,045 INFO L226 Difference]: Without dead ends: 32296 [2022-01-11 05:43:10,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2022-01-11 05:43:10,061 INFO L933 BasicCegarLoop]: 1097 mSDtfsCounter, 2912 mSDsluCounter, 4029 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2912 SdHoareTripleChecker+Valid, 5126 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 05:43:10,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2912 Valid, 5126 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 05:43:10,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32296 states. [2022-01-11 05:43:14,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32296 to 26136. [2022-01-11 05:43:14,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26136 states, 26134 states have (on average 1.6154434835846023) internal successors, (42218), 26135 states have internal predecessors, (42218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)