/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/elevator_spec9_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 17:59:07,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 17:59:07,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 17:59:07,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 17:59:07,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 17:59:07,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 17:59:07,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 17:59:07,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 17:59:07,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 17:59:07,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 17:59:07,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 17:59:07,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 17:59:07,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 17:59:07,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 17:59:07,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 17:59:07,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 17:59:07,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 17:59:07,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 17:59:07,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 17:59:07,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 17:59:07,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 17:59:07,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 17:59:07,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 17:59:07,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 17:59:07,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 17:59:07,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 17:59:07,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 17:59:07,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 17:59:07,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 17:59:07,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 17:59:07,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 17:59:07,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 17:59:07,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 17:59:07,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 17:59:07,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 17:59:07,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 17:59:07,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 17:59:07,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 17:59:07,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 17:59:07,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 17:59:07,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 17:59:07,384 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 17:59:07,407 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 17:59:07,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 17:59:07,408 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 17:59:07,408 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 17:59:07,409 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 17:59:07,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 17:59:07,409 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 17:59:07,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 17:59:07,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 17:59:07,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 17:59:07,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 17:59:07,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 17:59:07,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 17:59:07,410 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 17:59:07,410 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 17:59:07,410 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 17:59:07,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 17:59:07,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 17:59:07,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 17:59:07,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 17:59:07,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 17:59:07,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:59:07,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 17:59:07,412 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 17:59:07,412 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 17:59:07,412 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 17:59:07,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 17:59:07,412 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 17:59:07,412 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 17:59:07,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 17:59:07,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 17:59:07,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 17:59:07,414 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 17:59:07,414 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 17:59:07,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 17:59:07,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 17:59:07,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 17:59:07,602 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 17:59:07,603 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 17:59:07,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec9_product32.cil.c [2022-01-10 17:59:07,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26d4ec304/52a8ed4b6fe949a7bdee53ac3cd52486/FLAGa28025098 [2022-01-10 17:59:08,106 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 17:59:08,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec9_product32.cil.c [2022-01-10 17:59:08,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26d4ec304/52a8ed4b6fe949a7bdee53ac3cd52486/FLAGa28025098 [2022-01-10 17:59:08,433 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26d4ec304/52a8ed4b6fe949a7bdee53ac3cd52486 [2022-01-10 17:59:08,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 17:59:08,436 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 17:59:08,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 17:59:08,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 17:59:08,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 17:59:08,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:59:08" (1/1) ... [2022-01-10 17:59:08,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ef26664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:08, skipping insertion in model container [2022-01-10 17:59:08,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 05:59:08" (1/1) ... [2022-01-10 17:59:08,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 17:59:08,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:59:08,709 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/elevator_spec9_product32.cil.c[17414,17427] [2022-01-10 17:59:08,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:59:08,849 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 17:59:08,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 17:59:08,876 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/elevator_spec9_product32.cil.c[17414,17427] [2022-01-10 17:59:08,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:59:08,930 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 17:59:08,953 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/elevator_spec9_product32.cil.c[17414,17427] [2022-01-10 17:59:09,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 17:59:09,051 INFO L208 MainTranslator]: Completed translation [2022-01-10 17:59:09,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:09 WrapperNode [2022-01-10 17:59:09,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 17:59:09,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 17:59:09,052 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 17:59:09,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 17:59:09,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:09" (1/1) ... [2022-01-10 17:59:09,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:09" (1/1) ... [2022-01-10 17:59:09,278 INFO L137 Inliner]: procedures = 101, calls = 352, calls flagged for inlining = 204, calls inlined = 848, statements flattened = 27754 [2022-01-10 17:59:09,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 17:59:09,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 17:59:09,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 17:59:09,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 17:59:09,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:09" (1/1) ... [2022-01-10 17:59:09,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:09" (1/1) ... [2022-01-10 17:59:09,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:09" (1/1) ... [2022-01-10 17:59:09,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:09" (1/1) ... [2022-01-10 17:59:09,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:09" (1/1) ... [2022-01-10 17:59:09,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:09" (1/1) ... [2022-01-10 17:59:09,685 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:09" (1/1) ... [2022-01-10 17:59:09,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 17:59:09,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 17:59:09,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 17:59:09,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 17:59:09,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:09" (1/1) ... [2022-01-10 17:59:09,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 17:59:09,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 17:59:09,767 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 17:59:09,773 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 17:59:09,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 17:59:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 17:59:09,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 17:59:09,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 17:59:10,080 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 17:59:10,082 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 17:59:18,498 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 17:59:18,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 17:59:18,537 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 17:59:18,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:59:18 BoogieIcfgContainer [2022-01-10 17:59:18,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 17:59:18,545 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 17:59:18,545 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 17:59:18,546 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 17:59:18,548 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:59:18" (1/1) ... [2022-01-10 17:59:19,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:59:19 BasicIcfg [2022-01-10 17:59:19,974 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 17:59:19,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 17:59:19,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 17:59:19,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 17:59:19,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 05:59:08" (1/4) ... [2022-01-10 17:59:19,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa90233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:59:19, skipping insertion in model container [2022-01-10 17:59:19,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 05:59:09" (2/4) ... [2022-01-10 17:59:19,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa90233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 05:59:19, skipping insertion in model container [2022-01-10 17:59:19,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 05:59:18" (3/4) ... [2022-01-10 17:59:19,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa90233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 05:59:19, skipping insertion in model container [2022-01-10 17:59:19,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 05:59:19" (4/4) ... [2022-01-10 17:59:19,980 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product32.cil.cTransformedIcfg [2022-01-10 17:59:19,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 17:59:19,983 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 17:59:20,042 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 17:59:20,048 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 17:59:20,048 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 17:59:20,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 7322 states, 7316 states have (on average 1.8721979223619465) internal successors, (13697), 7321 states have internal predecessors, (13697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:20,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-10 17:59:20,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:20,152 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] [2022-01-10 17:59:20,154 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:59:20,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:20,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1449857583, now seen corresponding path program 1 times [2022-01-10 17:59:20,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:20,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487098660] [2022-01-10 17:59:20,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:20,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:20,501 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 17:59:20,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:20,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487098660] [2022-01-10 17:59:20,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487098660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:20,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:20,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:59:20,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620260501] [2022-01-10 17:59:20,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:20,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:20,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:20,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:20,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:20,549 INFO L87 Difference]: Start difference. First operand has 7322 states, 7316 states have (on average 1.8721979223619465) internal successors, (13697), 7321 states have internal predecessors, (13697), 0 states have call successors, (0), 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 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:20,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:20,876 INFO L93 Difference]: Finished difference Result 14629 states and 27371 transitions. [2022-01-10 17:59:20,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:20,878 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-01-10 17:59:20,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:20,923 INFO L225 Difference]: With dead ends: 14629 [2022-01-10 17:59:20,924 INFO L226 Difference]: Without dead ends: 7311 [2022-01-10 17:59:20,947 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 17:59:20,950 INFO L933 BasicCegarLoop]: 13676 mSDtfsCounter, 13671 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13671 SdHoareTripleChecker+Valid, 13687 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:20,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13671 Valid, 13687 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:20,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7311 states. [2022-01-10 17:59:21,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7311 to 7311. [2022-01-10 17:59:21,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7311 states, 7306 states have (on average 1.8714754995893785) internal successors, (13673), 7310 states have internal predecessors, (13673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:21,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7311 states to 7311 states and 13673 transitions. [2022-01-10 17:59:21,218 INFO L78 Accepts]: Start accepts. Automaton has 7311 states and 13673 transitions. Word has length 32 [2022-01-10 17:59:21,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:21,219 INFO L470 AbstractCegarLoop]: Abstraction has 7311 states and 13673 transitions. [2022-01-10 17:59:21,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:21,220 INFO L276 IsEmpty]: Start isEmpty. Operand 7311 states and 13673 transitions. [2022-01-10 17:59:21,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 17:59:21,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:21,223 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] [2022-01-10 17:59:21,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 17:59:21,224 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:59:21,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:21,225 INFO L85 PathProgramCache]: Analyzing trace with hash 558709121, now seen corresponding path program 1 times [2022-01-10 17:59:21,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:21,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132943138] [2022-01-10 17:59:21,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:21,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:21,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:21,322 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 17:59:21,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:21,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132943138] [2022-01-10 17:59:21,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132943138] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:21,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:21,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:59:21,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56299126] [2022-01-10 17:59:21,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:21,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:21,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:21,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:21,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:21,329 INFO L87 Difference]: Start difference. First operand 7311 states and 13673 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:21,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:21,600 INFO L93 Difference]: Finished difference Result 14572 states and 27260 transitions. [2022-01-10 17:59:21,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:21,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2022-01-10 17:59:21,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:21,630 INFO L225 Difference]: With dead ends: 14572 [2022-01-10 17:59:21,630 INFO L226 Difference]: Without dead ends: 7311 [2022-01-10 17:59:21,643 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 17:59:21,643 INFO L933 BasicCegarLoop]: 13613 mSDtfsCounter, 13631 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13631 SdHoareTripleChecker+Valid, 13628 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:21,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13631 Valid, 13628 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:21,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7311 states. [2022-01-10 17:59:21,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7311 to 7311. [2022-01-10 17:59:21,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7311 states, 7306 states have (on average 1.8680536545305229) internal successors, (13648), 7310 states have internal predecessors, (13648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:22,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7311 states to 7311 states and 13648 transitions. [2022-01-10 17:59:22,014 INFO L78 Accepts]: Start accepts. Automaton has 7311 states and 13648 transitions. Word has length 39 [2022-01-10 17:59:22,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:22,015 INFO L470 AbstractCegarLoop]: Abstraction has 7311 states and 13648 transitions. [2022-01-10 17:59:22,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:22,015 INFO L276 IsEmpty]: Start isEmpty. Operand 7311 states and 13648 transitions. [2022-01-10 17:59:22,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 17:59:22,021 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:22,022 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] [2022-01-10 17:59:22,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 17:59:22,022 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:59:22,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:22,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1500819002, now seen corresponding path program 1 times [2022-01-10 17:59:22,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:22,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041518092] [2022-01-10 17:59:22,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:22,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:22,074 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 17:59:22,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:22,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041518092] [2022-01-10 17:59:22,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041518092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:22,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:22,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:59:22,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308421792] [2022-01-10 17:59:22,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:22,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:22,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:22,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:22,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:22,076 INFO L87 Difference]: Start difference. First operand 7311 states and 13648 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:22,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:22,612 INFO L93 Difference]: Finished difference Result 17609 states and 32924 transitions. [2022-01-10 17:59:22,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:22,613 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-01-10 17:59:22,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:22,654 INFO L225 Difference]: With dead ends: 17609 [2022-01-10 17:59:22,654 INFO L226 Difference]: Without dead ends: 12110 [2022-01-10 17:59:22,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:22,668 INFO L933 BasicCegarLoop]: 13852 mSDtfsCounter, 13376 mSDsluCounter, 9094 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13376 SdHoareTripleChecker+Valid, 22946 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:22,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13376 Valid, 22946 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 17:59:22,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12110 states. [2022-01-10 17:59:22,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12110 to 12093. [2022-01-10 17:59:22,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12093 states, 12088 states have (on average 1.8691264063534083) internal successors, (22594), 12092 states have internal predecessors, (22594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:23,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12093 states to 12093 states and 22594 transitions. [2022-01-10 17:59:23,009 INFO L78 Accepts]: Start accepts. Automaton has 12093 states and 22594 transitions. Word has length 42 [2022-01-10 17:59:23,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:23,010 INFO L470 AbstractCegarLoop]: Abstraction has 12093 states and 22594 transitions. [2022-01-10 17:59:23,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:23,010 INFO L276 IsEmpty]: Start isEmpty. Operand 12093 states and 22594 transitions. [2022-01-10 17:59:23,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 17:59:23,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:23,011 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] [2022-01-10 17:59:23,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 17:59:23,011 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:59:23,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:23,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2055874501, now seen corresponding path program 1 times [2022-01-10 17:59:23,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:23,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849947186] [2022-01-10 17:59:23,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:23,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:23,055 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 17:59:23,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:23,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849947186] [2022-01-10 17:59:23,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849947186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:23,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:23,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:59:23,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650397273] [2022-01-10 17:59:23,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:23,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:23,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:23,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:23,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:23,057 INFO L87 Difference]: Start difference. First operand 12093 states and 22594 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:23,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:23,623 INFO L93 Difference]: Finished difference Result 31757 states and 59396 transitions. [2022-01-10 17:59:23,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:23,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-01-10 17:59:23,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:23,685 INFO L225 Difference]: With dead ends: 31757 [2022-01-10 17:59:23,685 INFO L226 Difference]: Without dead ends: 21478 [2022-01-10 17:59:23,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:23,712 INFO L933 BasicCegarLoop]: 13428 mSDtfsCounter, 13253 mSDsluCounter, 9094 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13253 SdHoareTripleChecker+Valid, 22522 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:23,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13253 Valid, 22522 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:59:23,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21478 states. [2022-01-10 17:59:24,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21478 to 21461. [2022-01-10 17:59:24,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21461 states, 21456 states have (on average 1.8693139448173006) internal successors, (40108), 21460 states have internal predecessors, (40108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:24,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21461 states to 21461 states and 40108 transitions. [2022-01-10 17:59:24,262 INFO L78 Accepts]: Start accepts. Automaton has 21461 states and 40108 transitions. Word has length 43 [2022-01-10 17:59:24,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:24,263 INFO L470 AbstractCegarLoop]: Abstraction has 21461 states and 40108 transitions. [2022-01-10 17:59:24,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:24,263 INFO L276 IsEmpty]: Start isEmpty. Operand 21461 states and 40108 transitions. [2022-01-10 17:59:24,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 17:59:24,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:24,265 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] [2022-01-10 17:59:24,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 17:59:24,265 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:59:24,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:24,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1972668551, now seen corresponding path program 1 times [2022-01-10 17:59:24,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:24,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192419859] [2022-01-10 17:59:24,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:24,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:24,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:24,321 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 17:59:24,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:24,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192419859] [2022-01-10 17:59:24,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192419859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:24,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:24,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:59:24,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552563659] [2022-01-10 17:59:24,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:24,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:24,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:24,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:24,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:24,323 INFO L87 Difference]: Start difference. First operand 21461 states and 40108 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:25,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:25,070 INFO L93 Difference]: Finished difference Result 59403 states and 111074 transitions. [2022-01-10 17:59:25,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:25,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-01-10 17:59:25,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:25,257 INFO L225 Difference]: With dead ends: 59403 [2022-01-10 17:59:25,258 INFO L226 Difference]: Without dead ends: 39758 [2022-01-10 17:59:25,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:25,283 INFO L933 BasicCegarLoop]: 13312 mSDtfsCounter, 13134 mSDsluCounter, 9094 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13134 SdHoareTripleChecker+Valid, 22406 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:25,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13134 Valid, 22406 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:59:25,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39758 states. [2022-01-10 17:59:26,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39758 to 39741. [2022-01-10 17:59:26,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39741 states, 39736 states have (on average 1.8684316488826254) internal successors, (74244), 39740 states have internal predecessors, (74244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:26,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39741 states to 39741 states and 74244 transitions. [2022-01-10 17:59:26,161 INFO L78 Accepts]: Start accepts. Automaton has 39741 states and 74244 transitions. Word has length 44 [2022-01-10 17:59:26,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:26,163 INFO L470 AbstractCegarLoop]: Abstraction has 39741 states and 74244 transitions. [2022-01-10 17:59:26,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 2 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:26,163 INFO L276 IsEmpty]: Start isEmpty. Operand 39741 states and 74244 transitions. [2022-01-10 17:59:26,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-01-10 17:59:26,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:26,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 17:59:26,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 17:59:26,165 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:59:26,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:26,165 INFO L85 PathProgramCache]: Analyzing trace with hash -496293513, now seen corresponding path program 1 times [2022-01-10 17:59:26,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:26,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413052678] [2022-01-10 17:59:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:26,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:26,220 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 17:59:26,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:26,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413052678] [2022-01-10 17:59:26,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413052678] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:26,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:26,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:59:26,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943738260] [2022-01-10 17:59:26,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:26,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:26,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:26,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:26,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:26,221 INFO L87 Difference]: Start difference. First operand 39741 states and 74244 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:27,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:27,547 INFO L93 Difference]: Finished difference Result 113265 states and 211626 transitions. [2022-01-10 17:59:27,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:27,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-01-10 17:59:27,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:27,714 INFO L225 Difference]: With dead ends: 113265 [2022-01-10 17:59:27,715 INFO L226 Difference]: Without dead ends: 75342 [2022-01-10 17:59:27,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:27,766 INFO L933 BasicCegarLoop]: 13198 mSDtfsCounter, 13019 mSDsluCounter, 9094 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13019 SdHoareTripleChecker+Valid, 22292 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:27,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13019 Valid, 22292 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:59:27,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75342 states. [2022-01-10 17:59:29,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75342 to 75325. [2022-01-10 17:59:29,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75325 states, 75320 states have (on average 1.8667020711630378) internal successors, (140600), 75324 states have internal predecessors, (140600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:29,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75325 states to 75325 states and 140600 transitions. [2022-01-10 17:59:29,484 INFO L78 Accepts]: Start accepts. Automaton has 75325 states and 140600 transitions. Word has length 45 [2022-01-10 17:59:29,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:29,484 INFO L470 AbstractCegarLoop]: Abstraction has 75325 states and 140600 transitions. [2022-01-10 17:59:29,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 2 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:29,484 INFO L276 IsEmpty]: Start isEmpty. Operand 75325 states and 140600 transitions. [2022-01-10 17:59:29,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 17:59:29,486 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:29,486 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] [2022-01-10 17:59:29,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 17:59:29,486 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:59:29,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:29,487 INFO L85 PathProgramCache]: Analyzing trace with hash 350181351, now seen corresponding path program 1 times [2022-01-10 17:59:29,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:29,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124470178] [2022-01-10 17:59:29,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:29,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:29,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:29,694 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 17:59:29,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:29,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124470178] [2022-01-10 17:59:29,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124470178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:29,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:29,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:59:29,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088182495] [2022-01-10 17:59:29,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:29,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:29,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:29,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:29,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:29,696 INFO L87 Difference]: Start difference. First operand 75325 states and 140600 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:31,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:31,780 INFO L93 Difference]: Finished difference Result 217999 states and 406858 transitions. [2022-01-10 17:59:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:31,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-01-10 17:59:31,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:32,084 INFO L225 Difference]: With dead ends: 217999 [2022-01-10 17:59:32,087 INFO L226 Difference]: Without dead ends: 144494 [2022-01-10 17:59:32,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:32,195 INFO L933 BasicCegarLoop]: 13088 mSDtfsCounter, 12908 mSDsluCounter, 9094 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12908 SdHoareTripleChecker+Valid, 22182 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:32,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12908 Valid, 22182 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:59:32,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144494 states. [2022-01-10 17:59:34,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144494 to 144477. [2022-01-10 17:59:34,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144477 states, 144472 states have (on average 1.8643889473392767) internal successors, (269352), 144476 states have internal predecessors, (269352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:35,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144477 states to 144477 states and 269352 transitions. [2022-01-10 17:59:35,267 INFO L78 Accepts]: Start accepts. Automaton has 144477 states and 269352 transitions. Word has length 46 [2022-01-10 17:59:35,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:35,267 INFO L470 AbstractCegarLoop]: Abstraction has 144477 states and 269352 transitions. [2022-01-10 17:59:35,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:35,267 INFO L276 IsEmpty]: Start isEmpty. Operand 144477 states and 269352 transitions. [2022-01-10 17:59:35,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 17:59:35,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:35,268 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 17:59:35,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 17:59:35,269 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:59:35,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:35,269 INFO L85 PathProgramCache]: Analyzing trace with hash 11364476, now seen corresponding path program 1 times [2022-01-10 17:59:35,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:35,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415569590] [2022-01-10 17:59:35,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:35,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:35,303 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 17:59:35,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:35,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415569590] [2022-01-10 17:59:35,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415569590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:35,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:35,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 17:59:35,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307904880] [2022-01-10 17:59:35,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:35,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:35,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:35,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:35,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:35,305 INFO L87 Difference]: Start difference. First operand 144477 states and 269352 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) 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 17:59:39,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:39,601 INFO L93 Difference]: Finished difference Result 421357 states and 785322 transitions. [2022-01-10 17:59:39,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:39,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) 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 17:59:39,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:40,272 INFO L225 Difference]: With dead ends: 421357 [2022-01-10 17:59:40,272 INFO L226 Difference]: Without dead ends: 278702 [2022-01-10 17:59:40,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:40,378 INFO L933 BasicCegarLoop]: 12982 mSDtfsCounter, 12801 mSDsluCounter, 9094 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12801 SdHoareTripleChecker+Valid, 22076 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:40,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12801 Valid, 22076 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 17:59:40,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278702 states. [2022-01-10 17:59:45,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278702 to 278685. [2022-01-10 17:59:45,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278685 states, 278680 states have (on average 1.8616764748098178) internal successors, (518812), 278684 states have internal predecessors, (518812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 17:59:46,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278685 states to 278685 states and 518812 transitions. [2022-01-10 17:59:46,462 INFO L78 Accepts]: Start accepts. Automaton has 278685 states and 518812 transitions. Word has length 47 [2022-01-10 17:59:46,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 17:59:46,462 INFO L470 AbstractCegarLoop]: Abstraction has 278685 states and 518812 transitions. [2022-01-10 17:59:46,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) 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 17:59:46,463 INFO L276 IsEmpty]: Start isEmpty. Operand 278685 states and 518812 transitions. [2022-01-10 17:59:46,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 17:59:46,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 17:59:46,463 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 17:59:46,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 17:59:46,464 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 17:59:46,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 17:59:46,464 INFO L85 PathProgramCache]: Analyzing trace with hash 140447195, now seen corresponding path program 1 times [2022-01-10 17:59:46,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 17:59:46,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259181898] [2022-01-10 17:59:46,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 17:59:46,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 17:59:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 17:59:46,503 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 17:59:46,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 17:59:46,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259181898] [2022-01-10 17:59:46,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259181898] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 17:59:46,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 17:59:46,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 17:59:46,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465546937] [2022-01-10 17:59:46,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 17:59:46,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 17:59:46,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 17:59:46,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 17:59:46,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 17:59:46,504 INFO L87 Difference]: Start difference. First operand 278685 states and 518812 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 17:59:53,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 17:59:53,785 INFO L93 Difference]: Finished difference Result 783203 states and 1457384 transitions. [2022-01-10 17:59:53,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 17:59:53,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 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 17:59:53,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 17:59:55,267 INFO L225 Difference]: With dead ends: 783203 [2022-01-10 17:59:55,267 INFO L226 Difference]: Without dead ends: 555346 [2022-01-10 17:59:55,892 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 17:59:55,895 INFO L933 BasicCegarLoop]: 13880 mSDtfsCounter, 12901 mSDsluCounter, 9167 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12901 SdHoareTripleChecker+Valid, 23047 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 17:59:55,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12901 Valid, 23047 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 17:59:56,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555346 states.