/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_LAZY.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:06:31,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:06:31,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:06:31,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:06:31,319 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:06:31,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:06:31,325 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:06:31,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:06:31,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:06:31,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:06:31,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:06:31,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:06:31,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:06:31,338 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:06:31,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:06:31,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:06:31,342 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:06:31,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:06:31,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:06:31,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:06:31,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:06:31,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:06:31,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:06:31,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:06:31,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 18:06:31,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 18:06:31,364 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 18:06:31,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 18:06:31,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 18:06:31,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 18:06:31,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 18:06:31,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 18:06:31,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 18:06:31,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 18:06:31,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 18:06:31,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 18:06:31,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 18:06:31,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 18:06:31,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:06:31,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:06:31,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:06:31,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:06:31,405 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:06:31,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:06:31,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:06:31,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:06:31,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:06:31,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:06:31,407 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:06:31,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:06:31,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:06:31,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:06:31,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:06:31,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:06:31,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:06:31,409 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:06:31,409 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:06:31,409 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:06:31,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:06:31,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:06:31,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:06:31,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:06:31,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:06:31,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:06:31,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:06:31,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:06:31,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:06:31,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:06:31,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:06:31,412 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:06:31,412 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:06:31,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:06:31,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:06:31,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:06:31,413 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:06:31,413 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:06:31,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:06:31,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:06:31,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:06:31,639 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:06:31,640 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:06:31,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product19.cil.c [2022-01-10 18:06:31,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/678f2184a/2557d95cf0894c1f8c2322907b37d35c/FLAG451e31b25 [2022-01-10 18:06:32,203 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:06:32,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product19.cil.c [2022-01-10 18:06:32,251 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/678f2184a/2557d95cf0894c1f8c2322907b37d35c/FLAG451e31b25 [2022-01-10 18:06:32,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/678f2184a/2557d95cf0894c1f8c2322907b37d35c [2022-01-10 18:06:32,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:06:32,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:06:32,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:06:32,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:06:32,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:06:32,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:06:32" (1/1) ... [2022-01-10 18:06:32,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32f9b714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:32, skipping insertion in model container [2022-01-10 18:06:32,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:06:32" (1/1) ... [2022-01-10 18:06:32,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:06:32,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:06:32,983 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_spec4_product19.cil.c[1542,1555] [2022-01-10 18:06:33,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:06:33,337 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 18:06:33,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:06:33,351 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_spec4_product19.cil.c[1542,1555] [2022-01-10 18:06:33,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:06:33,448 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:06:33,461 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_spec4_product19.cil.c[1542,1555] [2022-01-10 18:06:33,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:06:33,556 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:06:33,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:33 WrapperNode [2022-01-10 18:06:33,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:06:33,558 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:06:33,558 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:06:33,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:06:33,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:33" (1/1) ... [2022-01-10 18:06:33,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:33" (1/1) ... [2022-01-10 18:06:33,686 INFO L137 Inliner]: procedures = 129, calls = 199, calls flagged for inlining = 112, calls inlined = 149, statements flattened = 2179 [2022-01-10 18:06:33,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:06:33,687 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:06:33,687 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:06:33,687 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:06:33,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:33" (1/1) ... [2022-01-10 18:06:33,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:33" (1/1) ... [2022-01-10 18:06:33,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:33" (1/1) ... [2022-01-10 18:06:33,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:33" (1/1) ... [2022-01-10 18:06:33,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:33" (1/1) ... [2022-01-10 18:06:33,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:33" (1/1) ... [2022-01-10 18:06:33,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:33" (1/1) ... [2022-01-10 18:06:33,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:06:33,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:06:33,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:06:33,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:06:33,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:33" (1/1) ... [2022-01-10 18:06:33,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:06:33,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:06:33,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 18:06:33,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 18:06:33,904 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 18:06:33,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:06:33,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:06:33,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:06:33,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:06:34,164 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:06:34,166 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:06:35,293 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:06:35,304 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:06:35,304 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:06:35,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:06:35 BoogieIcfgContainer [2022-01-10 18:06:35,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:06:35,308 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:06:35,308 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:06:35,309 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:06:35,312 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:06:35" (1/1) ... [2022-01-10 18:06:35,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:06:35 BasicIcfg [2022-01-10 18:06:35,698 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:06:35,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:06:35,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:06:35,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:06:35,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:06:32" (1/4) ... [2022-01-10 18:06:35,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1040c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:06:35, skipping insertion in model container [2022-01-10 18:06:35,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:06:33" (2/4) ... [2022-01-10 18:06:35,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1040c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:06:35, skipping insertion in model container [2022-01-10 18:06:35,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:06:35" (3/4) ... [2022-01-10 18:06:35,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f1040c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:06:35, skipping insertion in model container [2022-01-10 18:06:35,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:06:35" (4/4) ... [2022-01-10 18:06:35,704 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec4_product19.cil.cTransformedIcfg [2022-01-10 18:06:35,709 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:06:35,709 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 18:06:35,762 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:06:35,772 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 18:06:35,772 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 18:06:35,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 490 states, 487 states have (on average 1.6817248459958931) internal successors, (819), 489 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:35,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 18:06:35,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:35,817 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] [2022-01-10 18:06:35,818 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:06:35,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:35,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1100548895, now seen corresponding path program 1 times [2022-01-10 18:06:35,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:35,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374498639] [2022-01-10 18:06:35,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:35,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:36,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:36,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:36,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374498639] [2022-01-10 18:06:36,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374498639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:36,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:36,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:06:36,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957495826] [2022-01-10 18:06:36,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:36,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:06:36,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:36,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:06:36,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:06:36,322 INFO L87 Difference]: Start difference. First operand has 490 states, 487 states have (on average 1.6817248459958931) internal successors, (819), 489 states have internal predecessors, (819), 0 states have call successors, (0), 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 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:36,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:36,406 INFO L93 Difference]: Finished difference Result 719 states and 1178 transitions. [2022-01-10 18:06:36,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:06:36,408 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-01-10 18:06:36,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:36,427 INFO L225 Difference]: With dead ends: 719 [2022-01-10 18:06:36,427 INFO L226 Difference]: Without dead ends: 407 [2022-01-10 18:06:36,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:06:36,439 INFO L933 BasicCegarLoop]: 813 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, 813 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:36,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:06:36,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-01-10 18:06:36,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2022-01-10 18:06:36,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 405 states have (on average 1.693827160493827) internal successors, (686), 406 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:36,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 686 transitions. [2022-01-10 18:06:36,526 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 686 transitions. Word has length 47 [2022-01-10 18:06:36,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:36,527 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 686 transitions. [2022-01-10 18:06:36,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:36,527 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 686 transitions. [2022-01-10 18:06:36,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 18:06:36,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:36,529 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] [2022-01-10 18:06:36,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:06:36,529 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:06:36,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:36,530 INFO L85 PathProgramCache]: Analyzing trace with hash 2034938601, now seen corresponding path program 1 times [2022-01-10 18:06:36,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:36,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497472835] [2022-01-10 18:06:36,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:36,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:36,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:36,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:36,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497472835] [2022-01-10 18:06:36,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497472835] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:36,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:36,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:06:36,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030950725] [2022-01-10 18:06:36,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:36,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:06:36,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:36,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:06:36,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:06:36,763 INFO L87 Difference]: Start difference. First operand 407 states and 686 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:36,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:36,862 INFO L93 Difference]: Finished difference Result 795 states and 1344 transitions. [2022-01-10 18:06:36,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:06:36,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-01-10 18:06:36,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:36,865 INFO L225 Difference]: With dead ends: 795 [2022-01-10 18:06:36,865 INFO L226 Difference]: Without dead ends: 407 [2022-01-10 18:06:36,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:06:36,870 INFO L933 BasicCegarLoop]: 667 mSDtfsCounter, 661 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:36,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 680 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:36,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-01-10 18:06:36,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2022-01-10 18:06:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 405 states have (on average 1.6888888888888889) internal successors, (684), 406 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:36,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 684 transitions. [2022-01-10 18:06:36,895 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 684 transitions. Word has length 48 [2022-01-10 18:06:36,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:36,896 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 684 transitions. [2022-01-10 18:06:36,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:36,900 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 684 transitions. [2022-01-10 18:06:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 18:06:36,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:36,905 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] [2022-01-10 18:06:36,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:06:36,905 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:06:36,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:36,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1225114729, now seen corresponding path program 1 times [2022-01-10 18:06:36,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:36,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495268183] [2022-01-10 18:06:36,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:36,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:37,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:37,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:37,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495268183] [2022-01-10 18:06:37,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495268183] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:37,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:37,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:06:37,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836144730] [2022-01-10 18:06:37,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:37,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:06:37,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:37,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:06:37,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:37,121 INFO L87 Difference]: Start difference. First operand 407 states and 684 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:37,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:37,361 INFO L93 Difference]: Finished difference Result 1903 states and 3216 transitions. [2022-01-10 18:06:37,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:06:37,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-01-10 18:06:37,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:37,372 INFO L225 Difference]: With dead ends: 1903 [2022-01-10 18:06:37,373 INFO L226 Difference]: Without dead ends: 1520 [2022-01-10 18:06:37,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:06:37,380 INFO L933 BasicCegarLoop]: 1291 mSDtfsCounter, 3203 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3203 SdHoareTripleChecker+Valid, 3215 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:37,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3203 Valid, 3215 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:37,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2022-01-10 18:06:37,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 407. [2022-01-10 18:06:37,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 405 states have (on average 1.6864197530864198) internal successors, (683), 406 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:37,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 683 transitions. [2022-01-10 18:06:37,417 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 683 transitions. Word has length 50 [2022-01-10 18:06:37,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:37,417 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 683 transitions. [2022-01-10 18:06:37,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:37,418 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 683 transitions. [2022-01-10 18:06:37,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 18:06:37,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:37,419 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] [2022-01-10 18:06:37,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:06:37,420 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:06:37,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:37,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2048778759, now seen corresponding path program 1 times [2022-01-10 18:06:37,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:37,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139221932] [2022-01-10 18:06:37,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:37,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:37,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:37,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:37,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139221932] [2022-01-10 18:06:37,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139221932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:37,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:37,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:06:37,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601656840] [2022-01-10 18:06:37,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:37,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:06:37,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:37,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:06:37,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:06:37,539 INFO L87 Difference]: Start difference. First operand 407 states and 683 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:37,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:37,583 INFO L93 Difference]: Finished difference Result 799 states and 1344 transitions. [2022-01-10 18:06:37,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:06:37,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-01-10 18:06:37,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:37,586 INFO L225 Difference]: With dead ends: 799 [2022-01-10 18:06:37,586 INFO L226 Difference]: Without dead ends: 421 [2022-01-10 18:06:37,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:06:37,588 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 662 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:37,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [662 Valid, 719 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:06:37,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-01-10 18:06:37,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 407. [2022-01-10 18:06:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 405 states have (on average 1.6839506172839507) internal successors, (682), 406 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 682 transitions. [2022-01-10 18:06:37,613 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 682 transitions. Word has length 51 [2022-01-10 18:06:37,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:37,613 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 682 transitions. [2022-01-10 18:06:37,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:37,614 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 682 transitions. [2022-01-10 18:06:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 18:06:37,615 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:37,615 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] [2022-01-10 18:06:37,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:06:37,615 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:06:37,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:37,616 INFO L85 PathProgramCache]: Analyzing trace with hash 463536552, now seen corresponding path program 1 times [2022-01-10 18:06:37,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:37,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951501301] [2022-01-10 18:06:37,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:37,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:37,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:37,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:37,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951501301] [2022-01-10 18:06:37,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951501301] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:37,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:37,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:06:37,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887375887] [2022-01-10 18:06:37,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:37,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:06:37,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:37,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:06:37,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:37,750 INFO L87 Difference]: Start difference. First operand 407 states and 682 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:37,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:37,937 INFO L93 Difference]: Finished difference Result 1155 states and 1946 transitions. [2022-01-10 18:06:37,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:06:37,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 18:06:37,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:37,942 INFO L225 Difference]: With dead ends: 1155 [2022-01-10 18:06:37,942 INFO L226 Difference]: Without dead ends: 782 [2022-01-10 18:06:37,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:06:37,944 INFO L933 BasicCegarLoop]: 691 mSDtfsCounter, 3126 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3126 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:37,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3126 Valid, 1396 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:37,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-01-10 18:06:37,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 407. [2022-01-10 18:06:37,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 405 states have (on average 1.6790123456790123) internal successors, (680), 406 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:37,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 680 transitions. [2022-01-10 18:06:37,984 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 680 transitions. Word has length 52 [2022-01-10 18:06:37,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:37,985 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 680 transitions. [2022-01-10 18:06:37,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:37,986 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 680 transitions. [2022-01-10 18:06:37,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 18:06:37,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:37,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:37,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:06:37,988 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:06:37,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:37,989 INFO L85 PathProgramCache]: Analyzing trace with hash 2092386987, now seen corresponding path program 1 times [2022-01-10 18:06:37,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:37,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699116509] [2022-01-10 18:06:37,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:37,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:38,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:38,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:38,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699116509] [2022-01-10 18:06:38,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699116509] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:38,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:38,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:06:38,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381133735] [2022-01-10 18:06:38,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:38,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:06:38,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:38,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:06:38,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:06:38,152 INFO L87 Difference]: Start difference. First operand 407 states and 680 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:38,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:38,648 INFO L93 Difference]: Finished difference Result 2255 states and 3684 transitions. [2022-01-10 18:06:38,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:06:38,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-01-10 18:06:38,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:38,658 INFO L225 Difference]: With dead ends: 2255 [2022-01-10 18:06:38,659 INFO L226 Difference]: Without dead ends: 2126 [2022-01-10 18:06:38,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:06:38,660 INFO L933 BasicCegarLoop]: 864 mSDtfsCounter, 3854 mSDsluCounter, 3678 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3854 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:38,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3854 Valid, 4542 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:06:38,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2126 states. [2022-01-10 18:06:38,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2126 to 773. [2022-01-10 18:06:38,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 771 states have (on average 1.6835278858625162) internal successors, (1298), 772 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:38,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1298 transitions. [2022-01-10 18:06:38,752 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1298 transitions. Word has length 54 [2022-01-10 18:06:38,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:38,755 INFO L470 AbstractCegarLoop]: Abstraction has 773 states and 1298 transitions. [2022-01-10 18:06:38,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:38,755 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1298 transitions. [2022-01-10 18:06:38,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 18:06:38,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:38,757 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:38,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:06:38,757 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:06:38,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:38,759 INFO L85 PathProgramCache]: Analyzing trace with hash -785164695, now seen corresponding path program 1 times [2022-01-10 18:06:38,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:38,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211332915] [2022-01-10 18:06:38,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:38,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:38,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:38,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:38,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211332915] [2022-01-10 18:06:38,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211332915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:38,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:38,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:06:38,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313300334] [2022-01-10 18:06:38,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:38,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:06:38,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:38,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:06:38,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:06:38,898 INFO L87 Difference]: Start difference. First operand 773 states and 1298 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:39,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:39,494 INFO L93 Difference]: Finished difference Result 4257 states and 7008 transitions. [2022-01-10 18:06:39,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:06:39,494 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-10 18:06:39,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:39,514 INFO L225 Difference]: With dead ends: 4257 [2022-01-10 18:06:39,514 INFO L226 Difference]: Without dead ends: 4028 [2022-01-10 18:06:39,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:06:39,518 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 3637 mSDsluCounter, 3183 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3637 SdHoareTripleChecker+Valid, 4057 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:39,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3637 Valid, 4057 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:39,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2022-01-10 18:06:39,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 1482. [2022-01-10 18:06:39,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1480 states have (on average 1.691891891891892) internal successors, (2504), 1481 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:39,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 2504 transitions. [2022-01-10 18:06:39,687 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 2504 transitions. Word has length 55 [2022-01-10 18:06:39,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:39,688 INFO L470 AbstractCegarLoop]: Abstraction has 1482 states and 2504 transitions. [2022-01-10 18:06:39,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:39,688 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 2504 transitions. [2022-01-10 18:06:39,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 18:06:39,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:39,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:39,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:06:39,691 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:06:39,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:39,691 INFO L85 PathProgramCache]: Analyzing trace with hash -2139492225, now seen corresponding path program 1 times [2022-01-10 18:06:39,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:39,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453655037] [2022-01-10 18:06:39,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:39,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:39,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:39,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:39,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453655037] [2022-01-10 18:06:39,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453655037] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:39,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:39,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:06:39,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547016943] [2022-01-10 18:06:39,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:39,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:06:39,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:39,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:06:39,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:39,768 INFO L87 Difference]: Start difference. First operand 1482 states and 2504 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:40,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:40,067 INFO L93 Difference]: Finished difference Result 4258 states and 7252 transitions. [2022-01-10 18:06:40,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:06:40,068 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-01-10 18:06:40,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:40,083 INFO L225 Difference]: With dead ends: 4258 [2022-01-10 18:06:40,084 INFO L226 Difference]: Without dead ends: 2826 [2022-01-10 18:06:40,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:06:40,091 INFO L933 BasicCegarLoop]: 1263 mSDtfsCounter, 1977 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1977 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:40,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1977 Valid, 1896 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:40,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2022-01-10 18:06:40,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 1482. [2022-01-10 18:06:40,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1482 states, 1480 states have (on average 1.6905405405405405) internal successors, (2502), 1481 states have internal predecessors, (2502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:40,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1482 states to 1482 states and 2502 transitions. [2022-01-10 18:06:40,260 INFO L78 Accepts]: Start accepts. Automaton has 1482 states and 2502 transitions. Word has length 55 [2022-01-10 18:06:40,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:40,261 INFO L470 AbstractCegarLoop]: Abstraction has 1482 states and 2502 transitions. [2022-01-10 18:06:40,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:40,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1482 states and 2502 transitions. [2022-01-10 18:06:40,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 18:06:40,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:40,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:40,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:06:40,264 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:06:40,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:40,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1443928453, now seen corresponding path program 1 times [2022-01-10 18:06:40,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:40,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745965505] [2022-01-10 18:06:40,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:40,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:40,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:40,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:40,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745965505] [2022-01-10 18:06:40,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745965505] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:40,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:40,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:06:40,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651430239] [2022-01-10 18:06:40,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:40,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 18:06:40,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:40,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 18:06:40,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 18:06:40,361 INFO L87 Difference]: Start difference. First operand 1482 states and 2502 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:41,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:41,317 INFO L93 Difference]: Finished difference Result 8206 states and 13596 transitions. [2022-01-10 18:06:41,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 18:06:41,318 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 18:06:41,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:41,354 INFO L225 Difference]: With dead ends: 8206 [2022-01-10 18:06:41,355 INFO L226 Difference]: Without dead ends: 7780 [2022-01-10 18:06:41,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:06:41,360 INFO L933 BasicCegarLoop]: 880 mSDtfsCounter, 3575 mSDsluCounter, 3221 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3575 SdHoareTripleChecker+Valid, 4101 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:41,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3575 Valid, 4101 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:41,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7780 states. [2022-01-10 18:06:41,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7780 to 2861. [2022-01-10 18:06:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2861 states, 2859 states have (on average 1.702693249387898) internal successors, (4868), 2860 states have internal predecessors, (4868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:41,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 4868 transitions. [2022-01-10 18:06:41,677 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 4868 transitions. Word has length 56 [2022-01-10 18:06:41,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:41,677 INFO L470 AbstractCegarLoop]: Abstraction has 2861 states and 4868 transitions. [2022-01-10 18:06:41,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:41,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 4868 transitions. [2022-01-10 18:06:41,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 18:06:41,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:41,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:41,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:06:41,682 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:06:41,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:41,683 INFO L85 PathProgramCache]: Analyzing trace with hash 63623356, now seen corresponding path program 1 times [2022-01-10 18:06:41,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:41,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178224760] [2022-01-10 18:06:41,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:41,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:41,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:41,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:41,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178224760] [2022-01-10 18:06:41,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178224760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:41,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:41,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:06:41,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717942288] [2022-01-10 18:06:41,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:41,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:06:41,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:41,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:06:41,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:41,783 INFO L87 Difference]: Start difference. First operand 2861 states and 4868 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:42,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:42,733 INFO L93 Difference]: Finished difference Result 8283 states and 13224 transitions. [2022-01-10 18:06:42,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:06:42,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 18:06:42,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:42,766 INFO L225 Difference]: With dead ends: 8283 [2022-01-10 18:06:42,767 INFO L226 Difference]: Without dead ends: 7554 [2022-01-10 18:06:42,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:06:42,771 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 1995 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1995 SdHoareTripleChecker+Valid, 2448 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:42,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1995 Valid, 2448 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:42,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7554 states. [2022-01-10 18:06:43,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7554 to 3734. [2022-01-10 18:06:43,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 3732 states have (on average 1.6666666666666667) internal successors, (6220), 3733 states have internal predecessors, (6220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:43,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 6220 transitions. [2022-01-10 18:06:43,191 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 6220 transitions. Word has length 56 [2022-01-10 18:06:43,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:43,192 INFO L470 AbstractCegarLoop]: Abstraction has 3734 states and 6220 transitions. [2022-01-10 18:06:43,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:43,192 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 6220 transitions. [2022-01-10 18:06:43,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 18:06:43,197 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:43,198 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] [2022-01-10 18:06:43,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:06:43,198 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:06:43,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:43,199 INFO L85 PathProgramCache]: Analyzing trace with hash -581677337, now seen corresponding path program 1 times [2022-01-10 18:06:43,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:43,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902724997] [2022-01-10 18:06:43,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:43,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:43,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:43,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902724997] [2022-01-10 18:06:43,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902724997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:43,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:43,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:06:43,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613123002] [2022-01-10 18:06:43,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:43,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:06:43,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:43,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:06:43,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:06:43,319 INFO L87 Difference]: Start difference. First operand 3734 states and 6220 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:43,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:43,995 INFO L93 Difference]: Finished difference Result 6341 states and 10231 transitions. [2022-01-10 18:06:43,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 18:06:43,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-01-10 18:06:43,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:44,007 INFO L225 Difference]: With dead ends: 6341 [2022-01-10 18:06:44,007 INFO L226 Difference]: Without dead ends: 4871 [2022-01-10 18:06:44,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-10 18:06:44,010 INFO L933 BasicCegarLoop]: 678 mSDtfsCounter, 1451 mSDsluCounter, 2556 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 3234 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:44,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1451 Valid, 3234 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:06:44,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2022-01-10 18:06:44,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 3678. [2022-01-10 18:06:44,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3678 states, 3676 states have (on average 1.661588683351469) internal successors, (6108), 3677 states have internal predecessors, (6108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:44,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3678 states to 3678 states and 6108 transitions. [2022-01-10 18:06:44,435 INFO L78 Accepts]: Start accepts. Automaton has 3678 states and 6108 transitions. Word has length 57 [2022-01-10 18:06:44,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:44,436 INFO L470 AbstractCegarLoop]: Abstraction has 3678 states and 6108 transitions. [2022-01-10 18:06:44,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:44,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3678 states and 6108 transitions. [2022-01-10 18:06:44,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 18:06:44,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:44,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:44,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:06:44,442 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:06:44,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:44,443 INFO L85 PathProgramCache]: Analyzing trace with hash -879765663, now seen corresponding path program 1 times [2022-01-10 18:06:44,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:44,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855783020] [2022-01-10 18:06:44,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:44,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:44,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:44,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:44,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:44,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855783020] [2022-01-10 18:06:44,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855783020] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:44,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:44,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:06:44,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148002876] [2022-01-10 18:06:44,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:44,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:06:44,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:44,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:06:44,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:06:44,609 INFO L87 Difference]: Start difference. First operand 3678 states and 6108 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:46,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:46,449 INFO L93 Difference]: Finished difference Result 10115 states and 15991 transitions. [2022-01-10 18:06:46,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 18:06:46,449 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 18:06:46,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:46,473 INFO L225 Difference]: With dead ends: 10115 [2022-01-10 18:06:46,473 INFO L226 Difference]: Without dead ends: 10079 [2022-01-10 18:06:46,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2022-01-10 18:06:46,478 INFO L933 BasicCegarLoop]: 1198 mSDtfsCounter, 1690 mSDsluCounter, 6048 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 7246 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:46,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1690 Valid, 7246 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:06:46,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10079 states. [2022-01-10 18:06:47,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10079 to 4570. [2022-01-10 18:06:47,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4570 states, 4568 states have (on average 1.6381348511383538) internal successors, (7483), 4569 states have internal predecessors, (7483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:47,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4570 states to 4570 states and 7483 transitions. [2022-01-10 18:06:47,213 INFO L78 Accepts]: Start accepts. Automaton has 4570 states and 7483 transitions. Word has length 58 [2022-01-10 18:06:47,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:47,214 INFO L470 AbstractCegarLoop]: Abstraction has 4570 states and 7483 transitions. [2022-01-10 18:06:47,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:47,214 INFO L276 IsEmpty]: Start isEmpty. Operand 4570 states and 7483 transitions. [2022-01-10 18:06:47,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 18:06:47,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:47,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:47,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:06:47,223 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:06:47,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:47,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1502005626, now seen corresponding path program 1 times [2022-01-10 18:06:47,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:47,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002950085] [2022-01-10 18:06:47,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:47,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:47,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:47,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002950085] [2022-01-10 18:06:47,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002950085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:47,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:47,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:06:47,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379968914] [2022-01-10 18:06:47,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:47,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:06:47,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:47,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:06:47,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:06:47,347 INFO L87 Difference]: Start difference. First operand 4570 states and 7483 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:48,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:48,472 INFO L93 Difference]: Finished difference Result 7083 states and 11336 transitions. [2022-01-10 18:06:48,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 18:06:48,472 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-10 18:06:48,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:48,487 INFO L225 Difference]: With dead ends: 7083 [2022-01-10 18:06:48,487 INFO L226 Difference]: Without dead ends: 6714 [2022-01-10 18:06:48,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-01-10 18:06:48,490 INFO L933 BasicCegarLoop]: 806 mSDtfsCounter, 1572 mSDsluCounter, 3795 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1572 SdHoareTripleChecker+Valid, 4601 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:48,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1572 Valid, 4601 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:48,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6714 states. [2022-01-10 18:06:48,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6714 to 4632. [2022-01-10 18:06:49,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4632 states, 4630 states have (on average 1.6345572354211664) internal successors, (7568), 4631 states have internal predecessors, (7568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:49,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4632 states to 4632 states and 7568 transitions. [2022-01-10 18:06:49,017 INFO L78 Accepts]: Start accepts. Automaton has 4632 states and 7568 transitions. Word has length 59 [2022-01-10 18:06:49,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:49,017 INFO L470 AbstractCegarLoop]: Abstraction has 4632 states and 7568 transitions. [2022-01-10 18:06:49,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:49,018 INFO L276 IsEmpty]: Start isEmpty. Operand 4632 states and 7568 transitions. [2022-01-10 18:06:49,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 18:06:49,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:49,025 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:49,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:06:49,026 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:06:49,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:49,026 INFO L85 PathProgramCache]: Analyzing trace with hash 662950943, now seen corresponding path program 1 times [2022-01-10 18:06:49,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:49,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420155805] [2022-01-10 18:06:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:49,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:49,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:49,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:49,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:49,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420155805] [2022-01-10 18:06:49,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420155805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:49,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:49,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:06:49,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286687310] [2022-01-10 18:06:49,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:49,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:06:49,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:49,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:06:49,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:49,122 INFO L87 Difference]: Start difference. First operand 4632 states and 7568 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:50,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:50,785 INFO L93 Difference]: Finished difference Result 12962 states and 20341 transitions. [2022-01-10 18:06:50,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 18:06:50,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-10 18:06:50,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:50,812 INFO L225 Difference]: With dead ends: 12962 [2022-01-10 18:06:50,812 INFO L226 Difference]: Without dead ends: 11340 [2022-01-10 18:06:50,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 18:06:50,820 INFO L933 BasicCegarLoop]: 1038 mSDtfsCounter, 843 mSDsluCounter, 2358 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 3396 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:50,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 3396 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:50,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11340 states. [2022-01-10 18:06:51,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11340 to 4796. [2022-01-10 18:06:51,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4796 states, 4794 states have (on average 1.62828535669587) internal successors, (7806), 4795 states have internal predecessors, (7806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:51,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 7806 transitions. [2022-01-10 18:06:51,446 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 7806 transitions. Word has length 59 [2022-01-10 18:06:51,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:51,446 INFO L470 AbstractCegarLoop]: Abstraction has 4796 states and 7806 transitions. [2022-01-10 18:06:51,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 7806 transitions. [2022-01-10 18:06:51,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:06:51,453 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:51,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:51,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:06:51,453 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:06:51,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:51,454 INFO L85 PathProgramCache]: Analyzing trace with hash 684345313, now seen corresponding path program 1 times [2022-01-10 18:06:51,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:51,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090111237] [2022-01-10 18:06:51,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:51,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:51,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:51,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:51,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090111237] [2022-01-10 18:06:51,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090111237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:51,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:51,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 18:06:51,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858472327] [2022-01-10 18:06:51,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:51,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:06:51,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:51,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:06:51,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:06:51,585 INFO L87 Difference]: Start difference. First operand 4796 states and 7806 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:52,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:52,863 INFO L93 Difference]: Finished difference Result 6960 states and 11125 transitions. [2022-01-10 18:06:52,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 18:06:52,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 18:06:52,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:52,878 INFO L225 Difference]: With dead ends: 6960 [2022-01-10 18:06:52,878 INFO L226 Difference]: Without dead ends: 6480 [2022-01-10 18:06:52,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-01-10 18:06:52,881 INFO L933 BasicCegarLoop]: 810 mSDtfsCounter, 1162 mSDsluCounter, 3666 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 4476 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:52,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1162 Valid, 4476 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:52,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6480 states. [2022-01-10 18:06:53,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6480 to 4740. [2022-01-10 18:06:53,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4740 states, 4738 states have (on average 1.6260025327142253) internal successors, (7704), 4739 states have internal predecessors, (7704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:53,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4740 states to 4740 states and 7704 transitions. [2022-01-10 18:06:53,546 INFO L78 Accepts]: Start accepts. Automaton has 4740 states and 7704 transitions. Word has length 60 [2022-01-10 18:06:53,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:53,546 INFO L470 AbstractCegarLoop]: Abstraction has 4740 states and 7704 transitions. [2022-01-10 18:06:53,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:53,547 INFO L276 IsEmpty]: Start isEmpty. Operand 4740 states and 7704 transitions. [2022-01-10 18:06:53,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:06:53,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:53,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:53,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:06:53,553 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:06:53,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:53,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1608046687, now seen corresponding path program 1 times [2022-01-10 18:06:53,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:53,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409209557] [2022-01-10 18:06:53,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:53,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:53,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:53,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409209557] [2022-01-10 18:06:53,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409209557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:53,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:53,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:06:53,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867353218] [2022-01-10 18:06:53,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:53,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:06:53,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:53,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:06:53,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:53,668 INFO L87 Difference]: Start difference. First operand 4740 states and 7704 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:54,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:54,606 INFO L93 Difference]: Finished difference Result 7022 states and 11207 transitions. [2022-01-10 18:06:54,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:06:54,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 18:06:54,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:54,614 INFO L225 Difference]: With dead ends: 7022 [2022-01-10 18:06:54,614 INFO L226 Difference]: Without dead ends: 5266 [2022-01-10 18:06:54,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:06:54,617 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 1347 mSDsluCounter, 1051 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 1714 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:54,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1347 Valid, 1714 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:06:54,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5266 states. [2022-01-10 18:06:55,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5266 to 4604. [2022-01-10 18:06:55,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4604 states, 4602 states have (on average 1.62929161234246) internal successors, (7498), 4603 states have internal predecessors, (7498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:55,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4604 states to 4604 states and 7498 transitions. [2022-01-10 18:06:55,207 INFO L78 Accepts]: Start accepts. Automaton has 4604 states and 7498 transitions. Word has length 60 [2022-01-10 18:06:55,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:55,207 INFO L470 AbstractCegarLoop]: Abstraction has 4604 states and 7498 transitions. [2022-01-10 18:06:55,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:55,208 INFO L276 IsEmpty]: Start isEmpty. Operand 4604 states and 7498 transitions. [2022-01-10 18:06:55,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:06:55,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:55,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:55,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:06:55,214 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:06:55,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:55,215 INFO L85 PathProgramCache]: Analyzing trace with hash -228594446, now seen corresponding path program 1 times [2022-01-10 18:06:55,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:55,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763814003] [2022-01-10 18:06:55,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:55,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:55,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:55,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763814003] [2022-01-10 18:06:55,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763814003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:55,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:55,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:06:55,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679190020] [2022-01-10 18:06:55,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:55,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:06:55,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:55,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:06:55,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:06:55,320 INFO L87 Difference]: Start difference. First operand 4604 states and 7498 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:56,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:56,038 INFO L93 Difference]: Finished difference Result 5881 states and 9435 transitions. [2022-01-10 18:06:56,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:06:56,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 18:06:56,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:56,046 INFO L225 Difference]: With dead ends: 5881 [2022-01-10 18:06:56,046 INFO L226 Difference]: Without dead ends: 4115 [2022-01-10 18:06:56,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:56,050 INFO L933 BasicCegarLoop]: 685 mSDtfsCounter, 476 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:56,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 1991 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:06:56,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2022-01-10 18:06:56,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 3671. [2022-01-10 18:06:56,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3671 states, 3670 states have (on average 1.6452316076294278) internal successors, (6038), 3670 states have internal predecessors, (6038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:56,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 6038 transitions. [2022-01-10 18:06:56,497 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 6038 transitions. Word has length 60 [2022-01-10 18:06:56,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:56,497 INFO L470 AbstractCegarLoop]: Abstraction has 3671 states and 6038 transitions. [2022-01-10 18:06:56,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:56,498 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 6038 transitions. [2022-01-10 18:06:56,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 18:06:56,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:56,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:56,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:06:56,507 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:06:56,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:56,507 INFO L85 PathProgramCache]: Analyzing trace with hash -390690017, now seen corresponding path program 1 times [2022-01-10 18:06:56,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:56,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660330374] [2022-01-10 18:06:56,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:56,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:56,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:56,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:56,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660330374] [2022-01-10 18:06:56,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660330374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:56,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:56,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:06:56,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917466044] [2022-01-10 18:06:56,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:56,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:06:56,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:56,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:06:56,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:06:56,636 INFO L87 Difference]: Start difference. First operand 3671 states and 6038 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:57,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:06:57,173 INFO L93 Difference]: Finished difference Result 4536 states and 7258 transitions. [2022-01-10 18:06:57,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:06:57,174 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-01-10 18:06:57,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:06:57,181 INFO L225 Difference]: With dead ends: 4536 [2022-01-10 18:06:57,181 INFO L226 Difference]: Without dead ends: 3671 [2022-01-10 18:06:57,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:06:57,184 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 322 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:06:57,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 1669 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:06:57,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2022-01-10 18:06:57,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3671. [2022-01-10 18:06:57,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3671 states, 3670 states have (on average 1.6408719346049045) internal successors, (6022), 3670 states have internal predecessors, (6022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:57,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 6022 transitions. [2022-01-10 18:06:57,640 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 6022 transitions. Word has length 89 [2022-01-10 18:06:57,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:06:57,640 INFO L470 AbstractCegarLoop]: Abstraction has 3671 states and 6022 transitions. [2022-01-10 18:06:57,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:06:57,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 6022 transitions. [2022-01-10 18:06:57,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 18:06:57,647 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:06:57,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:06:57,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:06:57,647 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:06:57,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:06:57,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1933654428, now seen corresponding path program 1 times [2022-01-10 18:06:57,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:06:57,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085881174] [2022-01-10 18:06:57,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:06:57,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:06:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:06:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:06:57,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:06:57,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085881174] [2022-01-10 18:06:57,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085881174] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:06:57,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:06:57,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 18:06:57,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497804215] [2022-01-10 18:06:57,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:06:57,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:06:57,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:06:57,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:06:57,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:06:57,823 INFO L87 Difference]: Start difference. First operand 3671 states and 6022 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:00,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:00,941 INFO L93 Difference]: Finished difference Result 13017 states and 18954 transitions. [2022-01-10 18:07:00,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-10 18:07:00,942 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-01-10 18:07:00,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:00,959 INFO L225 Difference]: With dead ends: 13017 [2022-01-10 18:07:00,960 INFO L226 Difference]: Without dead ends: 12248 [2022-01-10 18:07:00,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2022-01-10 18:07:00,965 INFO L933 BasicCegarLoop]: 781 mSDtfsCounter, 3054 mSDsluCounter, 6056 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3054 SdHoareTripleChecker+Valid, 6837 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:00,965 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3054 Valid, 6837 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:00,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12248 states. [2022-01-10 18:07:01,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12248 to 4603. [2022-01-10 18:07:01,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4603 states, 4602 states have (on average 1.620599739243807) internal successors, (7458), 4602 states have internal predecessors, (7458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:01,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4603 states to 4603 states and 7458 transitions. [2022-01-10 18:07:01,831 INFO L78 Accepts]: Start accepts. Automaton has 4603 states and 7458 transitions. Word has length 92 [2022-01-10 18:07:01,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:01,831 INFO L470 AbstractCegarLoop]: Abstraction has 4603 states and 7458 transitions. [2022-01-10 18:07:01,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:01,832 INFO L276 IsEmpty]: Start isEmpty. Operand 4603 states and 7458 transitions. [2022-01-10 18:07:01,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 18:07:01,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:01,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:01,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 18:07:01,841 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:01,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:01,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2052132869, now seen corresponding path program 1 times [2022-01-10 18:07:01,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:01,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46404580] [2022-01-10 18:07:01,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:01,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:01,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:01,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46404580] [2022-01-10 18:07:01,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46404580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:01,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:01,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:07:01,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95303666] [2022-01-10 18:07:01,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:01,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:07:01,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:01,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:07:01,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:07:01,928 INFO L87 Difference]: Start difference. First operand 4603 states and 7458 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:02,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:02,793 INFO L93 Difference]: Finished difference Result 7057 states and 11046 transitions. [2022-01-10 18:07:02,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:07:02,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-01-10 18:07:02,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:02,801 INFO L225 Difference]: With dead ends: 7057 [2022-01-10 18:07:02,801 INFO L226 Difference]: Without dead ends: 5308 [2022-01-10 18:07:02,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:02,804 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 515 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:02,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [515 Valid, 1652 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:02,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5308 states. [2022-01-10 18:07:03,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5308 to 4603. [2022-01-10 18:07:03,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4603 states, 4602 states have (on average 1.6188613646240766) internal successors, (7450), 4602 states have internal predecessors, (7450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:03,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4603 states to 4603 states and 7450 transitions. [2022-01-10 18:07:03,465 INFO L78 Accepts]: Start accepts. Automaton has 4603 states and 7450 transitions. Word has length 93 [2022-01-10 18:07:03,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:03,466 INFO L470 AbstractCegarLoop]: Abstraction has 4603 states and 7450 transitions. [2022-01-10 18:07:03,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:03,466 INFO L276 IsEmpty]: Start isEmpty. Operand 4603 states and 7450 transitions. [2022-01-10 18:07:03,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 18:07:03,471 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:03,471 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:03,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 18:07:03,472 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:03,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:03,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1804824924, now seen corresponding path program 1 times [2022-01-10 18:07:03,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:03,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798493971] [2022-01-10 18:07:03,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:03,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:03,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:03,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:03,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798493971] [2022-01-10 18:07:03,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798493971] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:03,589 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:03,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 18:07:03,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789880924] [2022-01-10 18:07:03,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:03,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 18:07:03,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:03,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 18:07:03,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:07:03,590 INFO L87 Difference]: Start difference. First operand 4603 states and 7450 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:06,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:06,215 INFO L93 Difference]: Finished difference Result 11763 states and 17706 transitions. [2022-01-10 18:07:06,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 18:07:06,216 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-01-10 18:07:06,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:06,233 INFO L225 Difference]: With dead ends: 11763 [2022-01-10 18:07:06,233 INFO L226 Difference]: Without dead ends: 10994 [2022-01-10 18:07:06,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2022-01-10 18:07:06,237 INFO L933 BasicCegarLoop]: 1040 mSDtfsCounter, 1804 mSDsluCounter, 4394 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 5434 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:06,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1804 Valid, 5434 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:06,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10994 states. [2022-01-10 18:07:07,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10994 to 5211. [2022-01-10 18:07:07,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5211 states, 5210 states have (on average 1.6142034548944337) internal successors, (8410), 5210 states have internal predecessors, (8410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:07,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5211 states to 5211 states and 8410 transitions. [2022-01-10 18:07:07,022 INFO L78 Accepts]: Start accepts. Automaton has 5211 states and 8410 transitions. Word has length 93 [2022-01-10 18:07:07,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:07,022 INFO L470 AbstractCegarLoop]: Abstraction has 5211 states and 8410 transitions. [2022-01-10 18:07:07,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:07,022 INFO L276 IsEmpty]: Start isEmpty. Operand 5211 states and 8410 transitions. [2022-01-10 18:07:07,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 18:07:07,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:07,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:07,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 18:07:07,032 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:07,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:07,033 INFO L85 PathProgramCache]: Analyzing trace with hash 2049188014, now seen corresponding path program 1 times [2022-01-10 18:07:07,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:07,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900032962] [2022-01-10 18:07:07,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:07,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:07,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:07,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:07,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900032962] [2022-01-10 18:07:07,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900032962] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:07,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:07,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:07:07,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192619680] [2022-01-10 18:07:07,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:07,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:07,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:07,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:07,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:07,146 INFO L87 Difference]: Start difference. First operand 5211 states and 8410 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:07,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:07,988 INFO L93 Difference]: Finished difference Result 5516 states and 8782 transitions. [2022-01-10 18:07:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:07:07,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2022-01-10 18:07:07,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:07,998 INFO L225 Difference]: With dead ends: 5516 [2022-01-10 18:07:07,998 INFO L226 Difference]: Without dead ends: 5211 [2022-01-10 18:07:07,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 18:07:08,000 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 542 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:08,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 2044 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:08,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5211 states. [2022-01-10 18:07:08,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5211 to 5211. [2022-01-10 18:07:08,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5211 states, 5210 states have (on average 1.6111324376199616) internal successors, (8394), 5210 states have internal predecessors, (8394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:08,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5211 states to 5211 states and 8394 transitions. [2022-01-10 18:07:08,770 INFO L78 Accepts]: Start accepts. Automaton has 5211 states and 8394 transitions. Word has length 93 [2022-01-10 18:07:08,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:08,771 INFO L470 AbstractCegarLoop]: Abstraction has 5211 states and 8394 transitions. [2022-01-10 18:07:08,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:08,771 INFO L276 IsEmpty]: Start isEmpty. Operand 5211 states and 8394 transitions. [2022-01-10 18:07:08,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 18:07:08,780 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:08,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:08,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 18:07:08,781 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:08,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:08,781 INFO L85 PathProgramCache]: Analyzing trace with hash -409467509, now seen corresponding path program 1 times [2022-01-10 18:07:08,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:08,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046207070] [2022-01-10 18:07:08,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:08,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:08,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:08,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:08,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046207070] [2022-01-10 18:07:08,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046207070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:08,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:08,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:07:08,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206046154] [2022-01-10 18:07:08,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:08,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:07:08,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:08,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:07:08,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:07:08,913 INFO L87 Difference]: Start difference. First operand 5211 states and 8394 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:10,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:10,386 INFO L93 Difference]: Finished difference Result 11125 states and 17762 transitions. [2022-01-10 18:07:10,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:07:10,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-01-10 18:07:10,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:10,399 INFO L225 Difference]: With dead ends: 11125 [2022-01-10 18:07:10,400 INFO L226 Difference]: Without dead ends: 9108 [2022-01-10 18:07:10,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:07:10,404 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 602 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:10,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 2595 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:10,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9108 states. [2022-01-10 18:07:11,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9108 to 8323. [2022-01-10 18:07:11,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8323 states, 8322 states have (on average 1.6296563326123528) internal successors, (13562), 8322 states have internal predecessors, (13562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8323 states to 8323 states and 13562 transitions. [2022-01-10 18:07:11,490 INFO L78 Accepts]: Start accepts. Automaton has 8323 states and 13562 transitions. Word has length 113 [2022-01-10 18:07:11,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:11,491 INFO L470 AbstractCegarLoop]: Abstraction has 8323 states and 13562 transitions. [2022-01-10 18:07:11,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:11,491 INFO L276 IsEmpty]: Start isEmpty. Operand 8323 states and 13562 transitions. [2022-01-10 18:07:11,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 18:07:11,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:11,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:11,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 18:07:11,505 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:11,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:11,505 INFO L85 PathProgramCache]: Analyzing trace with hash -308107040, now seen corresponding path program 1 times [2022-01-10 18:07:11,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:11,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069078220] [2022-01-10 18:07:11,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:11,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:11,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:11,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:11,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:11,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069078220] [2022-01-10 18:07:11,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069078220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:11,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:11,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 18:07:11,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340277149] [2022-01-10 18:07:11,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:11,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 18:07:11,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:11,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 18:07:11,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:07:11,636 INFO L87 Difference]: Start difference. First operand 8323 states and 13562 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:12,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:12,811 INFO L93 Difference]: Finished difference Result 9701 states and 15410 transitions. [2022-01-10 18:07:12,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 18:07:12,811 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2022-01-10 18:07:12,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:12,820 INFO L225 Difference]: With dead ends: 9701 [2022-01-10 18:07:12,820 INFO L226 Difference]: Without dead ends: 6972 [2022-01-10 18:07:12,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2022-01-10 18:07:12,823 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 1329 mSDsluCounter, 2962 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 3612 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:12,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1329 Valid, 3612 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:12,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6972 states. [2022-01-10 18:07:13,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6972 to 6411. [2022-01-10 18:07:13,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6411 states, 6410 states have (on average 1.6527301092043682) internal successors, (10594), 6410 states have internal predecessors, (10594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:13,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6411 states to 6411 states and 10594 transitions. [2022-01-10 18:07:13,569 INFO L78 Accepts]: Start accepts. Automaton has 6411 states and 10594 transitions. Word has length 113 [2022-01-10 18:07:13,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:13,569 INFO L470 AbstractCegarLoop]: Abstraction has 6411 states and 10594 transitions. [2022-01-10 18:07:13,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 8 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:13,569 INFO L276 IsEmpty]: Start isEmpty. Operand 6411 states and 10594 transitions. [2022-01-10 18:07:13,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 18:07:13,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:13,578 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:13,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 18:07:13,578 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:13,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:13,579 INFO L85 PathProgramCache]: Analyzing trace with hash 2139476928, now seen corresponding path program 1 times [2022-01-10 18:07:13,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:13,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175458963] [2022-01-10 18:07:13,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:13,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:13,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:13,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175458963] [2022-01-10 18:07:13,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175458963] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:13,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:13,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 18:07:13,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904948148] [2022-01-10 18:07:13,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:13,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 18:07:13,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:13,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 18:07:13,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 18:07:13,734 INFO L87 Difference]: Start difference. First operand 6411 states and 10594 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:15,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:15,706 INFO L93 Difference]: Finished difference Result 9007 states and 14066 transitions. [2022-01-10 18:07:15,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 18:07:15,706 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 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 114 [2022-01-10 18:07:15,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:15,716 INFO L225 Difference]: With dead ends: 9007 [2022-01-10 18:07:15,716 INFO L226 Difference]: Without dead ends: 7234 [2022-01-10 18:07:15,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2022-01-10 18:07:15,720 INFO L933 BasicCegarLoop]: 806 mSDtfsCounter, 2151 mSDsluCounter, 3543 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2151 SdHoareTripleChecker+Valid, 4349 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:15,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2151 Valid, 4349 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 18:07:15,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7234 states. [2022-01-10 18:07:16,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7234 to 5407. [2022-01-10 18:07:16,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5407 states, 5406 states have (on average 1.6733259341472437) internal successors, (9046), 5406 states have internal predecessors, (9046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5407 states to 5407 states and 9046 transitions. [2022-01-10 18:07:16,365 INFO L78 Accepts]: Start accepts. Automaton has 5407 states and 9046 transitions. Word has length 114 [2022-01-10 18:07:16,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:16,365 INFO L470 AbstractCegarLoop]: Abstraction has 5407 states and 9046 transitions. [2022-01-10 18:07:16,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:16,365 INFO L276 IsEmpty]: Start isEmpty. Operand 5407 states and 9046 transitions. [2022-01-10 18:07:16,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 18:07:16,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:16,371 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:16,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 18:07:16,372 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:16,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:16,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1388198191, now seen corresponding path program 1 times [2022-01-10 18:07:16,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:16,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096047278] [2022-01-10 18:07:16,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:16,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:16,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:16,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:16,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096047278] [2022-01-10 18:07:16,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096047278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:16,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:16,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:07:16,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488060851] [2022-01-10 18:07:16,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:16,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:07:16,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:16,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:07:16,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:16,435 INFO L87 Difference]: Start difference. First operand 5407 states and 9046 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:17,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:17,744 INFO L93 Difference]: Finished difference Result 15193 states and 25366 transitions. [2022-01-10 18:07:17,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:07:17,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-01-10 18:07:17,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:17,758 INFO L225 Difference]: With dead ends: 15193 [2022-01-10 18:07:17,758 INFO L226 Difference]: Without dead ends: 9884 [2022-01-10 18:07:17,763 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:17,763 INFO L933 BasicCegarLoop]: 654 mSDtfsCounter, 603 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:17,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 1210 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:17,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9884 states. [2022-01-10 18:07:18,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9884 to 8127. [2022-01-10 18:07:18,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8127 states, 8126 states have (on average 1.706866847157273) internal successors, (13870), 8126 states have internal predecessors, (13870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:18,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8127 states to 8127 states and 13870 transitions. [2022-01-10 18:07:18,590 INFO L78 Accepts]: Start accepts. Automaton has 8127 states and 13870 transitions. Word has length 127 [2022-01-10 18:07:18,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:18,590 INFO L470 AbstractCegarLoop]: Abstraction has 8127 states and 13870 transitions. [2022-01-10 18:07:18,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:18,590 INFO L276 IsEmpty]: Start isEmpty. Operand 8127 states and 13870 transitions. [2022-01-10 18:07:18,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 18:07:18,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:18,600 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:18,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 18:07:18,601 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:18,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:18,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1763068908, now seen corresponding path program 1 times [2022-01-10 18:07:18,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:18,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089699523] [2022-01-10 18:07:18,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:18,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:18,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:18,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:18,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:18,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089699523] [2022-01-10 18:07:18,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089699523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:18,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:18,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:07:18,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877803594] [2022-01-10 18:07:18,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:18,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:07:18,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:18,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:07:18,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:18,668 INFO L87 Difference]: Start difference. First operand 8127 states and 13870 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:20,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:20,382 INFO L93 Difference]: Finished difference Result 24153 states and 41310 transitions. [2022-01-10 18:07:20,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:07:20,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2022-01-10 18:07:20,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:20,408 INFO L225 Difference]: With dead ends: 24153 [2022-01-10 18:07:20,408 INFO L226 Difference]: Without dead ends: 16124 [2022-01-10 18:07:20,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:20,419 INFO L933 BasicCegarLoop]: 654 mSDtfsCounter, 601 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:20,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 1304 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:20,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16124 states. [2022-01-10 18:07:21,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16124 to 14367. [2022-01-10 18:07:21,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14367 states, 14366 states have (on average 1.7384101350410692) internal successors, (24974), 14366 states have internal predecessors, (24974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14367 states to 14367 states and 24974 transitions. [2022-01-10 18:07:21,538 INFO L78 Accepts]: Start accepts. Automaton has 14367 states and 24974 transitions. Word has length 128 [2022-01-10 18:07:21,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:21,539 INFO L470 AbstractCegarLoop]: Abstraction has 14367 states and 24974 transitions. [2022-01-10 18:07:21,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:21,539 INFO L276 IsEmpty]: Start isEmpty. Operand 14367 states and 24974 transitions. [2022-01-10 18:07:21,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 18:07:21,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:21,559 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:21,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 18:07:21,560 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:21,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:21,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1789372104, now seen corresponding path program 1 times [2022-01-10 18:07:21,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:21,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664838680] [2022-01-10 18:07:21,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:21,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:21,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:21,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:21,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664838680] [2022-01-10 18:07:21,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664838680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:21,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:21,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:07:21,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525456797] [2022-01-10 18:07:21,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:21,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:07:21,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:21,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:07:21,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:21,629 INFO L87 Difference]: Start difference. First operand 14367 states and 24974 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:23,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:23,917 INFO L93 Difference]: Finished difference Result 42521 states and 74046 transitions. [2022-01-10 18:07:23,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:07:23,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 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 129 [2022-01-10 18:07:23,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:23,968 INFO L225 Difference]: With dead ends: 42521 [2022-01-10 18:07:23,968 INFO L226 Difference]: Without dead ends: 28252 [2022-01-10 18:07:23,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:23,986 INFO L933 BasicCegarLoop]: 654 mSDtfsCounter, 599 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:23,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [599 Valid, 1296 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:24,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28252 states. [2022-01-10 18:07:25,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28252 to 26495. [2022-01-10 18:07:25,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26495 states, 26494 states have (on average 1.7579074507435646) internal successors, (46574), 26494 states have internal predecessors, (46574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:25,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26495 states to 26495 states and 46574 transitions. [2022-01-10 18:07:25,849 INFO L78 Accepts]: Start accepts. Automaton has 26495 states and 46574 transitions. Word has length 129 [2022-01-10 18:07:25,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:07:25,849 INFO L470 AbstractCegarLoop]: Abstraction has 26495 states and 46574 transitions. [2022-01-10 18:07:25,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:25,850 INFO L276 IsEmpty]: Start isEmpty. Operand 26495 states and 46574 transitions. [2022-01-10 18:07:25,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 18:07:25,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:07:25,899 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:07:25,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 18:07:25,899 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:07:25,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:07:25,900 INFO L85 PathProgramCache]: Analyzing trace with hash 260811090, now seen corresponding path program 1 times [2022-01-10 18:07:25,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:07:25,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047708431] [2022-01-10 18:07:25,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:07:25,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:07:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:07:25,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:07:25,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:07:25,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047708431] [2022-01-10 18:07:25,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047708431] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:07:25,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:07:25,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:07:25,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029365302] [2022-01-10 18:07:25,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:07:25,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:07:25,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:07:25,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:07:25,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:25,966 INFO L87 Difference]: Start difference. First operand 26495 states and 46574 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:07:29,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:07:29,636 INFO L93 Difference]: Finished difference Result 75193 states and 132062 transitions. [2022-01-10 18:07:29,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:07:29,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2022-01-10 18:07:29,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:07:29,738 INFO L225 Difference]: With dead ends: 75193 [2022-01-10 18:07:29,738 INFO L226 Difference]: Without dead ends: 48796 [2022-01-10 18:07:29,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:07:29,770 INFO L933 BasicCegarLoop]: 654 mSDtfsCounter, 597 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:07:29,771 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [597 Valid, 1248 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:07:29,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48796 states.