/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:07:41,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:07:41,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:07:41,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:07:41,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:07:41,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:07:41,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:07:41,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:07:41,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:07:41,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:07:41,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:07:41,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:07:41,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:07:41,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:07:41,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:07:41,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:07:41,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:07:41,598 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:07:41,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:07:41,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:07:41,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:07:41,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:07:41,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:07:41,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:07:41,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:07:41,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:07:41,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:07:41,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:07:41,636 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:07:41,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:07:41,637 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:07:41,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:07:41,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:07:41,642 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:07:41,657 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:07:41,657 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:07:41,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:07:41,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:07:41,658 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:07:41,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:07:41,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:07:41,660 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:07:41,690 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:07:41,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:07:41,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:07:41,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:07:41,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:07:41,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:07:41,709 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:07:41,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:07:41,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:07:41,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:07:41,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:07:41,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:07:41,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:07:41,712 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:07:41,712 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:07:41,712 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:07:41,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:07:41,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:07:41,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:07:41,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:07:41,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:07:41,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:07:41,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:07:41,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:07:41,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:07:41,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:07:41,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:07:41,714 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:07:41,714 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:07:41,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:07:41,714 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:07:41,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:07:41,716 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:07:41,716 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:07:42,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:07:42,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:07:42,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:07:42,151 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:07:42,152 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:07:42,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2022-01-11 00:07:42,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d477fb28/c4ba8d18cc6a41159326f4f985687a97/FLAGc47b78844 [2022-01-11 00:07:42,624 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:07:42,625 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2022-01-11 00:07:42,647 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d477fb28/c4ba8d18cc6a41159326f4f985687a97/FLAGc47b78844 [2022-01-11 00:07:43,026 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d477fb28/c4ba8d18cc6a41159326f4f985687a97 [2022-01-11 00:07:43,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:07:43,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:07:43,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:07:43,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:07:43,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:07:43,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:07:43" (1/1) ... [2022-01-11 00:07:43,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4587a394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:43, skipping insertion in model container [2022-01-11 00:07:43,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:07:43" (1/1) ... [2022-01-11 00:07:43,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:07:43,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:07:43,372 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c[17098,17111] [2022-01-11 00:07:43,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:07:43,400 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 00:07:43,414 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:07:43,454 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c[17098,17111] [2022-01-11 00:07:43,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:07:43,480 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:07:43,527 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c[17098,17111] [2022-01-11 00:07:43,544 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:07:43,561 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:07:43,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:43 WrapperNode [2022-01-11 00:07:43,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:07:43,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:07:43,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:07:43,563 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:07:43,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:43" (1/1) ... [2022-01-11 00:07:43,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:43" (1/1) ... [2022-01-11 00:07:43,653 INFO L137 Inliner]: procedures = 59, calls = 159, calls flagged for inlining = 56, calls inlined = 87, statements flattened = 631 [2022-01-11 00:07:43,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:07:43,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:07:43,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:07:43,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:07:43,668 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:43" (1/1) ... [2022-01-11 00:07:43,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:43" (1/1) ... [2022-01-11 00:07:43,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:43" (1/1) ... [2022-01-11 00:07:43,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:43" (1/1) ... [2022-01-11 00:07:43,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:43" (1/1) ... [2022-01-11 00:07:43,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:43" (1/1) ... [2022-01-11 00:07:43,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:43" (1/1) ... [2022-01-11 00:07:43,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:07:43,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:07:43,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:07:43,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:07:43,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:43" (1/1) ... [2022-01-11 00:07:43,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:07:43,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:07:43,793 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 00:07:43,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 00:07:43,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:07:43,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:07:43,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:07:43,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:07:43,943 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:07:43,945 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:07:44,427 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:07:44,432 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:07:44,432 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 00:07:44,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:07:44 BoogieIcfgContainer [2022-01-11 00:07:44,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:07:44,435 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:07:44,435 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:07:44,436 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:07:44,438 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:07:44" (1/1) ... [2022-01-11 00:07:44,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:07:44 BasicIcfg [2022-01-11 00:07:44,528 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:07:44,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:07:44,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:07:44,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:07:44,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:07:43" (1/4) ... [2022-01-11 00:07:44,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d8106d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:07:44, skipping insertion in model container [2022-01-11 00:07:44,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:43" (2/4) ... [2022-01-11 00:07:44,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d8106d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:07:44, skipping insertion in model container [2022-01-11 00:07:44,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:07:44" (3/4) ... [2022-01-11 00:07:44,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d8106d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:07:44, skipping insertion in model container [2022-01-11 00:07:44,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:07:44" (4/4) ... [2022-01-11 00:07:44,537 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product40.cil.cTransformedIcfg [2022-01-11 00:07:44,541 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:07:44,541 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-11 00:07:44,578 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:07:44,583 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 00:07:44,583 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-11 00:07:44,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 170 states have (on average 1.3823529411764706) internal successors, (235), 173 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:44,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-11 00:07:44,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:44,601 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] [2022-01-11 00:07:44,601 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:44,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:44,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1224007754, now seen corresponding path program 1 times [2022-01-11 00:07:44,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:44,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278565186] [2022-01-11 00:07:44,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:44,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:07:44,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:44,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278565186] [2022-01-11 00:07:44,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278565186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:44,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:44,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:07:44,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139218788] [2022-01-11 00:07:44,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:44,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 00:07:44,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:44,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 00:07:44,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:07:44,900 INFO L87 Difference]: Start difference. First operand has 174 states, 170 states have (on average 1.3823529411764706) internal successors, (235), 173 states have internal predecessors, (235), 0 states have call successors, (0), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:44,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:44,949 INFO L93 Difference]: Finished difference Result 337 states and 458 transitions. [2022-01-11 00:07:44,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 00:07:44,951 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2022-01-11 00:07:44,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:44,961 INFO L225 Difference]: With dead ends: 337 [2022-01-11 00:07:44,961 INFO L226 Difference]: Without dead ends: 164 [2022-01-11 00:07:44,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:07:44,968 INFO L933 BasicCegarLoop]: 225 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, 225 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:44,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:07:44,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-01-11 00:07:45,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-01-11 00:07:45,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 161 states have (on average 1.3478260869565217) internal successors, (217), 163 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:45,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 217 transitions. [2022-01-11 00:07:45,017 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 217 transitions. Word has length 21 [2022-01-11 00:07:45,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:45,017 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 217 transitions. [2022-01-11 00:07:45,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:45,018 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 217 transitions. [2022-01-11 00:07:45,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-11 00:07:45,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:45,020 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] [2022-01-11 00:07:45,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:07:45,020 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:45,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:45,023 INFO L85 PathProgramCache]: Analyzing trace with hash -18411403, now seen corresponding path program 1 times [2022-01-11 00:07:45,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:45,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119630518] [2022-01-11 00:07:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:45,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:07:45,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:45,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119630518] [2022-01-11 00:07:45,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119630518] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:45,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:45,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:07:45,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564539330] [2022-01-11 00:07:45,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:45,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:07:45,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:45,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:07:45,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:07:45,110 INFO L87 Difference]: Start difference. First operand 164 states and 217 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:45,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:45,158 INFO L93 Difference]: Finished difference Result 390 states and 519 transitions. [2022-01-11 00:07:45,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:07:45,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-01-11 00:07:45,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:45,160 INFO L225 Difference]: With dead ends: 390 [2022-01-11 00:07:45,160 INFO L226 Difference]: Without dead ends: 234 [2022-01-11 00:07:45,160 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 [2022-01-11 00:07:45,161 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 197 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:45,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 312 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:07:45,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-01-11 00:07:45,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 225. [2022-01-11 00:07:45,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 222 states have (on average 1.3513513513513513) internal successors, (300), 224 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:45,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 300 transitions. [2022-01-11 00:07:45,174 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 300 transitions. Word has length 22 [2022-01-11 00:07:45,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:45,175 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 300 transitions. [2022-01-11 00:07:45,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:45,175 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 300 transitions. [2022-01-11 00:07:45,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-11 00:07:45,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:45,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:07:45,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:07:45,176 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:45,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:45,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1479850418, now seen corresponding path program 1 times [2022-01-11 00:07:45,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:45,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69340042] [2022-01-11 00:07:45,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:45,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:07:45,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:45,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69340042] [2022-01-11 00:07:45,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69340042] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:45,224 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:45,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:07:45,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289538275] [2022-01-11 00:07:45,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:45,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:07:45,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:45,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:07:45,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:07:45,225 INFO L87 Difference]: Start difference. First operand 225 states and 300 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:45,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:45,313 INFO L93 Difference]: Finished difference Result 508 states and 675 transitions. [2022-01-11 00:07:45,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:07:45,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-11 00:07:45,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:45,317 INFO L225 Difference]: With dead ends: 508 [2022-01-11 00:07:45,318 INFO L226 Difference]: Without dead ends: 291 [2022-01-11 00:07:45,323 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 [2022-01-11 00:07:45,325 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 146 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:45,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 303 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:07:45,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-01-11 00:07:45,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 285. [2022-01-11 00:07:45,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 282 states have (on average 1.301418439716312) internal successors, (367), 284 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:45,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 367 transitions. [2022-01-11 00:07:45,355 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 367 transitions. Word has length 27 [2022-01-11 00:07:45,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:45,355 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 367 transitions. [2022-01-11 00:07:45,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:45,355 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 367 transitions. [2022-01-11 00:07:45,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-11 00:07:45,356 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:45,356 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] [2022-01-11 00:07:45,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:07:45,357 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:45,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:45,357 INFO L85 PathProgramCache]: Analyzing trace with hash 129479563, now seen corresponding path program 1 times [2022-01-11 00:07:45,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:45,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887320339] [2022-01-11 00:07:45,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:45,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:45,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:45,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:07:45,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:45,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887320339] [2022-01-11 00:07:45,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887320339] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:45,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:45,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:07:45,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705252871] [2022-01-11 00:07:45,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:45,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:07:45,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:45,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:07:45,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:07:45,486 INFO L87 Difference]: Start difference. First operand 285 states and 367 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 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) [2022-01-11 00:07:45,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:45,695 INFO L93 Difference]: Finished difference Result 957 states and 1212 transitions. [2022-01-11 00:07:45,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:07:45,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 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 [2022-01-11 00:07:45,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:45,698 INFO L225 Difference]: With dead ends: 957 [2022-01-11 00:07:45,699 INFO L226 Difference]: Without dead ends: 680 [2022-01-11 00:07:45,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-11 00:07:45,701 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 608 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:45,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 1150 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:07:45,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-01-11 00:07:45,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 279. [2022-01-11 00:07:45,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 276 states have (on average 1.2644927536231885) internal successors, (349), 278 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:45,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 349 transitions. [2022-01-11 00:07:45,718 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 349 transitions. Word has length 32 [2022-01-11 00:07:45,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:45,719 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 349 transitions. [2022-01-11 00:07:45,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 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) [2022-01-11 00:07:45,719 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 349 transitions. [2022-01-11 00:07:45,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-11 00:07:45,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:45,720 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] [2022-01-11 00:07:45,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:07:45,721 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:45,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:45,721 INFO L85 PathProgramCache]: Analyzing trace with hash -677219820, now seen corresponding path program 1 times [2022-01-11 00:07:45,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:45,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100939067] [2022-01-11 00:07:45,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:45,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:45,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:07:45,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:45,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100939067] [2022-01-11 00:07:45,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100939067] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:45,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:45,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:07:45,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747864457] [2022-01-11 00:07:45,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:45,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:07:45,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:45,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:07:45,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:07:45,767 INFO L87 Difference]: Start difference. First operand 279 states and 349 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:45,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:45,904 INFO L93 Difference]: Finished difference Result 811 states and 1003 transitions. [2022-01-11 00:07:45,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:07:45,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-01-11 00:07:45,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:45,906 INFO L225 Difference]: With dead ends: 811 [2022-01-11 00:07:45,907 INFO L226 Difference]: Without dead ends: 540 [2022-01-11 00:07:45,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:07:45,908 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 378 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:45,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 935 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:07:45,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2022-01-11 00:07:45,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 297. [2022-01-11 00:07:45,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 294 states have (on average 1.248299319727891) internal successors, (367), 296 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 367 transitions. [2022-01-11 00:07:45,924 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 367 transitions. Word has length 33 [2022-01-11 00:07:45,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:45,925 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 367 transitions. [2022-01-11 00:07:45,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:45,925 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 367 transitions. [2022-01-11 00:07:45,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-11 00:07:45,926 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:45,926 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] [2022-01-11 00:07:45,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:07:45,926 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:45,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:45,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1182778445, now seen corresponding path program 1 times [2022-01-11 00:07:45,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:45,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698408050] [2022-01-11 00:07:45,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:45,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:45,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:07:45,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:45,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698408050] [2022-01-11 00:07:45,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698408050] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:45,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:45,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:07:45,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207280279] [2022-01-11 00:07:45,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:45,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:07:45,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:45,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:07:45,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:07:45,961 INFO L87 Difference]: Start difference. First operand 297 states and 367 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:46,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:46,042 INFO L93 Difference]: Finished difference Result 745 states and 914 transitions. [2022-01-11 00:07:46,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 00:07:46,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-01-11 00:07:46,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:46,043 INFO L225 Difference]: With dead ends: 745 [2022-01-11 00:07:46,044 INFO L226 Difference]: Without dead ends: 456 [2022-01-11 00:07:46,044 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 [2022-01-11 00:07:46,045 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 228 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:46,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 634 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:07:46,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2022-01-11 00:07:46,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 309. [2022-01-11 00:07:46,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 306 states have (on average 1.238562091503268) internal successors, (379), 308 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:46,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 379 transitions. [2022-01-11 00:07:46,064 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 379 transitions. Word has length 33 [2022-01-11 00:07:46,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:46,064 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 379 transitions. [2022-01-11 00:07:46,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:46,064 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 379 transitions. [2022-01-11 00:07:46,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-11 00:07:46,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:46,065 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] [2022-01-11 00:07:46,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:07:46,065 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:46,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:46,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1693312622, now seen corresponding path program 1 times [2022-01-11 00:07:46,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:46,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720207460] [2022-01-11 00:07:46,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:46,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:46,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:07:46,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:46,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720207460] [2022-01-11 00:07:46,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720207460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:46,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:46,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:07:46,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475283964] [2022-01-11 00:07:46,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:46,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:07:46,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:46,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:07:46,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:07:46,095 INFO L87 Difference]: Start difference. First operand 309 states and 379 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:46,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:46,104 INFO L93 Difference]: Finished difference Result 309 states and 379 transitions. [2022-01-11 00:07:46,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:07:46,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-01-11 00:07:46,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:46,106 INFO L225 Difference]: With dead ends: 309 [2022-01-11 00:07:46,106 INFO L226 Difference]: Without dead ends: 136 [2022-01-11 00:07:46,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:07:46,107 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 82 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:46,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 97 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:07:46,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-01-11 00:07:46,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2022-01-11 00:07:46,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.2666666666666666) internal successors, (171), 135 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:46,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 171 transitions. [2022-01-11 00:07:46,116 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 171 transitions. Word has length 33 [2022-01-11 00:07:46,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:46,116 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 171 transitions. [2022-01-11 00:07:46,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:46,116 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 171 transitions. [2022-01-11 00:07:46,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-11 00:07:46,117 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:46,117 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] [2022-01-11 00:07:46,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:07:46,117 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:46,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:46,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1595836996, now seen corresponding path program 1 times [2022-01-11 00:07:46,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:46,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217891832] [2022-01-11 00:07:46,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:46,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:46,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:46,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:07:46,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:46,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217891832] [2022-01-11 00:07:46,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217891832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:46,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:46,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:07:46,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665438194] [2022-01-11 00:07:46,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:46,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:07:46,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:46,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:07:46,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:07:46,171 INFO L87 Difference]: Start difference. First operand 136 states and 171 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:46,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:46,203 INFO L93 Difference]: Finished difference Result 327 states and 413 transitions. [2022-01-11 00:07:46,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:07:46,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-01-11 00:07:46,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:46,205 INFO L225 Difference]: With dead ends: 327 [2022-01-11 00:07:46,205 INFO L226 Difference]: Without dead ends: 199 [2022-01-11 00:07:46,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:07:46,206 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 29 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:46,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 162 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:07:46,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-01-11 00:07:46,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2022-01-11 00:07:46,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.2474747474747474) internal successors, (247), 198 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:46,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 247 transitions. [2022-01-11 00:07:46,222 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 247 transitions. Word has length 40 [2022-01-11 00:07:46,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:46,222 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 247 transitions. [2022-01-11 00:07:46,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 2 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:46,222 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 247 transitions. [2022-01-11 00:07:46,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-11 00:07:46,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:46,223 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, 1, 1, 1] [2022-01-11 00:07:46,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:07:46,223 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:46,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:46,223 INFO L85 PathProgramCache]: Analyzing trace with hash 354971882, now seen corresponding path program 1 times [2022-01-11 00:07:46,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:46,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670967842] [2022-01-11 00:07:46,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:46,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:46,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:07:46,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:46,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670967842] [2022-01-11 00:07:46,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670967842] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:46,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:46,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:07:46,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405513511] [2022-01-11 00:07:46,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:46,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:07:46,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:46,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:07:46,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:07:46,312 INFO L87 Difference]: Start difference. First operand 199 states and 247 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 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) [2022-01-11 00:07:46,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:46,482 INFO L93 Difference]: Finished difference Result 960 states and 1214 transitions. [2022-01-11 00:07:46,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 00:07:46,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 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 [2022-01-11 00:07:46,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:46,485 INFO L225 Difference]: With dead ends: 960 [2022-01-11 00:07:46,485 INFO L226 Difference]: Without dead ends: 832 [2022-01-11 00:07:46,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-01-11 00:07:46,485 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 404 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:46,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 853 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:07:46,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2022-01-11 00:07:46,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 339. [2022-01-11 00:07:46,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.242603550295858) internal successors, (420), 338 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:46,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 420 transitions. [2022-01-11 00:07:46,531 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 420 transitions. Word has length 42 [2022-01-11 00:07:46,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:46,531 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 420 transitions. [2022-01-11 00:07:46,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 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) [2022-01-11 00:07:46,531 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 420 transitions. [2022-01-11 00:07:46,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 00:07:46,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:46,532 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:07:46,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:07:46,532 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:46,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:46,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1655453354, now seen corresponding path program 1 times [2022-01-11 00:07:46,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:46,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326534811] [2022-01-11 00:07:46,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:46,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:46,591 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:07:46,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:46,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326534811] [2022-01-11 00:07:46,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326534811] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:46,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:46,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:07:46,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391115143] [2022-01-11 00:07:46,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:46,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:07:46,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:46,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:07:46,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:07:46,593 INFO L87 Difference]: Start difference. First operand 339 states and 420 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:46,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:46,673 INFO L93 Difference]: Finished difference Result 779 states and 977 transitions. [2022-01-11 00:07:46,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:07:46,673 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-11 00:07:46,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:46,676 INFO L225 Difference]: With dead ends: 779 [2022-01-11 00:07:46,676 INFO L226 Difference]: Without dead ends: 448 [2022-01-11 00:07:46,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:07:46,678 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 185 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:46,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 440 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:07:46,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-01-11 00:07:46,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 324. [2022-01-11 00:07:46,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 323 states have (on average 1.21671826625387) internal successors, (393), 323 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:46,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 393 transitions. [2022-01-11 00:07:46,703 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 393 transitions. Word has length 71 [2022-01-11 00:07:46,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:46,703 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 393 transitions. [2022-01-11 00:07:46,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:46,703 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 393 transitions. [2022-01-11 00:07:46,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-11 00:07:46,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:46,705 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:07:46,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:07:46,705 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:46,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:46,705 INFO L85 PathProgramCache]: Analyzing trace with hash -916170761, now seen corresponding path program 1 times [2022-01-11 00:07:46,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:46,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425423660] [2022-01-11 00:07:46,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:46,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:46,777 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 74 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-01-11 00:07:46,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:46,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425423660] [2022-01-11 00:07:46,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425423660] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:07:46,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862998427] [2022-01-11 00:07:46,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:46,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:07:46,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:07:46,780 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:07:46,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 00:07:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:46,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-11 00:07:46,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:07:47,172 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-11 00:07:47,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:07:47,370 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-11 00:07:47,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862998427] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:07:47,371 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:07:47,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2022-01-11 00:07:47,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214849908] [2022-01-11 00:07:47,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:07:47,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-11 00:07:47,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:47,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-11 00:07:47,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-01-11 00:07:47,376 INFO L87 Difference]: Start difference. First operand 324 states and 393 transitions. Second operand has 13 states, 13 states have (on average 13.846153846153847) internal successors, (180), 13 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:48,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:48,806 INFO L93 Difference]: Finished difference Result 4026 states and 4912 transitions. [2022-01-11 00:07:48,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-11 00:07:48,807 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 13.846153846153847) internal successors, (180), 13 states have internal predecessors, (180), 0 states have call successors, (0), 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 [2022-01-11 00:07:48,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:48,818 INFO L225 Difference]: With dead ends: 4026 [2022-01-11 00:07:48,818 INFO L226 Difference]: Without dead ends: 3384 [2022-01-11 00:07:48,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1470 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=881, Invalid=3811, Unknown=0, NotChecked=0, Total=4692 [2022-01-11 00:07:48,821 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 2383 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2383 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:48,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2383 Valid, 1793 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 00:07:48,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2022-01-11 00:07:48,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 836. [2022-01-11 00:07:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 1.1952095808383234) internal successors, (998), 835 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:48,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 998 transitions. [2022-01-11 00:07:48,905 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 998 transitions. Word has length 128 [2022-01-11 00:07:48,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:48,906 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 998 transitions. [2022-01-11 00:07:48,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.846153846153847) internal successors, (180), 13 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:48,906 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 998 transitions. [2022-01-11 00:07:48,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 00:07:48,907 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:48,907 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:07:48,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-11 00:07:49,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-11 00:07:49,124 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:49,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:49,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1752876440, now seen corresponding path program 1 times [2022-01-11 00:07:49,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:49,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728910120] [2022-01-11 00:07:49,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:49,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:49,274 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-11 00:07:49,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:49,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728910120] [2022-01-11 00:07:49,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728910120] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:49,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:49,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:07:49,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689804390] [2022-01-11 00:07:49,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:49,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:07:49,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:49,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:07:49,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:07:49,276 INFO L87 Difference]: Start difference. First operand 836 states and 998 transitions. Second operand has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:49,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:49,537 INFO L93 Difference]: Finished difference Result 2681 states and 3209 transitions. [2022-01-11 00:07:49,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 00:07:49,538 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 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 132 [2022-01-11 00:07:49,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:49,544 INFO L225 Difference]: With dead ends: 2681 [2022-01-11 00:07:49,544 INFO L226 Difference]: Without dead ends: 1853 [2022-01-11 00:07:49,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 00:07:49,546 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 495 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:49,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 774 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:07:49,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1853 states. [2022-01-11 00:07:49,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1853 to 795. [2022-01-11 00:07:49,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 1.1775818639798488) internal successors, (935), 794 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:49,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 935 transitions. [2022-01-11 00:07:49,633 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 935 transitions. Word has length 132 [2022-01-11 00:07:49,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:49,633 INFO L470 AbstractCegarLoop]: Abstraction has 795 states and 935 transitions. [2022-01-11 00:07:49,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.0) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:49,633 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 935 transitions. [2022-01-11 00:07:49,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-01-11 00:07:49,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:49,662 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:07:49,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:07:49,662 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:49,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:49,663 INFO L85 PathProgramCache]: Analyzing trace with hash -573793218, now seen corresponding path program 2 times [2022-01-11 00:07:49,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:49,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291255395] [2022-01-11 00:07:49,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:49,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:49,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:49,787 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-11 00:07:49,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:49,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291255395] [2022-01-11 00:07:49,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291255395] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:07:49,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538773243] [2022-01-11 00:07:49,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 00:07:49,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:07:49,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:07:49,790 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:07:49,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 00:07:49,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 00:07:49,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 00:07:49,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-11 00:07:49,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:07:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-11 00:07:50,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:07:50,465 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-11 00:07:50,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538773243] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-11 00:07:50,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-11 00:07:50,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 20 [2022-01-11 00:07:50,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283540125] [2022-01-11 00:07:50,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:50,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 00:07:50,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:50,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 00:07:50,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-01-11 00:07:50,468 INFO L87 Difference]: Start difference. First operand 795 states and 935 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) [2022-01-11 00:07:50,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:50,953 INFO L93 Difference]: Finished difference Result 2415 states and 2862 transitions. [2022-01-11 00:07:50,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-11 00:07:50,953 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 132 [2022-01-11 00:07:50,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:50,958 INFO L225 Difference]: With dead ends: 2415 [2022-01-11 00:07:50,958 INFO L226 Difference]: Without dead ends: 1984 [2022-01-11 00:07:50,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=809, Unknown=0, NotChecked=0, Total=992 [2022-01-11 00:07:50,960 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 867 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:50,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 651 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:07:50,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2022-01-11 00:07:51,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1413. [2022-01-11 00:07:51,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1412 states have (on average 1.1933427762039661) internal successors, (1685), 1412 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:51,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1685 transitions. [2022-01-11 00:07:51,145 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1685 transitions. Word has length 132 [2022-01-11 00:07:51,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:51,145 INFO L470 AbstractCegarLoop]: Abstraction has 1413 states and 1685 transitions. [2022-01-11 00:07:51,145 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) [2022-01-11 00:07:51,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1685 transitions. [2022-01-11 00:07:51,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-11 00:07:51,148 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:51,148 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:07:51,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-11 00:07:51,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-11 00:07:51,368 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:51,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:51,368 INFO L85 PathProgramCache]: Analyzing trace with hash -954751790, now seen corresponding path program 3 times [2022-01-11 00:07:51,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:51,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001490093] [2022-01-11 00:07:51,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:51,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:51,457 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-11 00:07:51,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:51,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001490093] [2022-01-11 00:07:51,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001490093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:51,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:51,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:07:51,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524103759] [2022-01-11 00:07:51,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:51,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:07:51,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:51,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:07:51,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:07:51,459 INFO L87 Difference]: Start difference. First operand 1413 states and 1685 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:51,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:51,718 INFO L93 Difference]: Finished difference Result 2901 states and 3456 transitions. [2022-01-11 00:07:51,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:07:51,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 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 134 [2022-01-11 00:07:51,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:51,722 INFO L225 Difference]: With dead ends: 2901 [2022-01-11 00:07:51,722 INFO L226 Difference]: Without dead ends: 1496 [2022-01-11 00:07:51,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:07:51,724 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 116 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:51,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 380 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:07:51,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2022-01-11 00:07:51,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1413. [2022-01-11 00:07:51,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1413 states, 1412 states have (on average 1.184844192634561) internal successors, (1673), 1412 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:51,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1413 states to 1413 states and 1673 transitions. [2022-01-11 00:07:51,932 INFO L78 Accepts]: Start accepts. Automaton has 1413 states and 1673 transitions. Word has length 134 [2022-01-11 00:07:51,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:51,932 INFO L470 AbstractCegarLoop]: Abstraction has 1413 states and 1673 transitions. [2022-01-11 00:07:51,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:51,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1413 states and 1673 transitions. [2022-01-11 00:07:51,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-11 00:07:51,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:51,937 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:07:51,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:07:51,937 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:51,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:51,938 INFO L85 PathProgramCache]: Analyzing trace with hash 664823340, now seen corresponding path program 1 times [2022-01-11 00:07:51,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:51,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731978897] [2022-01-11 00:07:51,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:51,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 26 proven. 106 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 00:07:52,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:52,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731978897] [2022-01-11 00:07:52,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731978897] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:07:52,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208093329] [2022-01-11 00:07:52,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:52,135 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:07:52,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:07:52,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:07:52,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 00:07:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:52,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 925 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-11 00:07:52,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:07:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 77 proven. 62 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 00:07:52,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:07:55,198 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 77 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:07:55,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208093329] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:07:55,199 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:07:55,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 10] total 21 [2022-01-11 00:07:55,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001337988] [2022-01-11 00:07:55,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:07:55,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-11 00:07:55,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:55,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-11 00:07:55,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-01-11 00:07:55,201 INFO L87 Difference]: Start difference. First operand 1413 states and 1673 transitions. Second operand has 21 states, 21 states have (on average 14.619047619047619) internal successors, (307), 21 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:55,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:55,857 INFO L93 Difference]: Finished difference Result 2868 states and 3410 transitions. [2022-01-11 00:07:55,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-11 00:07:55,862 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 14.619047619047619) internal successors, (307), 21 states have internal predecessors, (307), 0 states have call successors, (0), 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 135 [2022-01-11 00:07:55,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:55,862 INFO L225 Difference]: With dead ends: 2868 [2022-01-11 00:07:55,862 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 00:07:55,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 258 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2022-01-11 00:07:55,865 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 1531 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:55,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1531 Valid, 1422 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:07:55,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 00:07:55,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 00:07:55,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:55,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 00:07:55,866 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 135 [2022-01-11 00:07:55,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:55,866 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 00:07:55,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 14.619047619047619) internal successors, (307), 21 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:55,866 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 00:07:55,866 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 00:07:55,868 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-11 00:07:55,869 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-11 00:07:55,869 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-11 00:07:55,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-11 00:07:56,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:07:56,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-11 00:08:23,071 WARN L228 SmtUtils]: Spent 24.71s on a formula simplification. DAG size of input: 541 DAG size of output: 540 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-11 00:08:33,315 WARN L228 SmtUtils]: Spent 10.08s on a formula simplification. DAG size of input: 246 DAG size of output: 217 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-11 00:08:39,068 WARN L228 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 339 DAG size of output: 336 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-11 00:08:51,187 WARN L228 SmtUtils]: Spent 12.12s on a formula simplification. DAG size of input: 336 DAG size of output: 332 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)