/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf -i ../../../trunk/examples/svcomp/loop-simple/deep-nested.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 02:12:02,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 02:12:02,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 02:12:02,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 02:12:02,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 02:12:02,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 02:12:02,638 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 02:12:02,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 02:12:02,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 02:12:02,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 02:12:02,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 02:12:02,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 02:12:02,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 02:12:02,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 02:12:02,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 02:12:02,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 02:12:02,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 02:12:02,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 02:12:02,656 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 02:12:02,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 02:12:02,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 02:12:02,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 02:12:02,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 02:12:02,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 02:12:02,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 02:12:02,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 02:12:02,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 02:12:02,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 02:12:02,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 02:12:02,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 02:12:02,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 02:12:02,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 02:12:02,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 02:12:02,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 02:12:02,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 02:12:02,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 02:12:02,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 02:12:02,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 02:12:02,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 02:12:02,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 02:12:02,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 02:12:02,677 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_SUM.epf [2022-01-11 02:12:02,700 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 02:12:02,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 02:12:02,701 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 02:12:02,701 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 02:12:02,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 02:12:02,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 02:12:02,702 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 02:12:02,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 02:12:02,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 02:12:02,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 02:12:02,703 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 02:12:02,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 02:12:02,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 02:12:02,703 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 02:12:02,704 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 02:12:02,704 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 02:12:02,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 02:12:02,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 02:12:02,704 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 02:12:02,704 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 02:12:02,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 02:12:02,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:12:02,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 02:12:02,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 02:12:02,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 02:12:02,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 02:12:02,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 02:12:02,706 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 02:12:02,706 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 02:12:02,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 02:12:02,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 02:12:02,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 02:12:02,707 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 02:12:02,707 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_SUM WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 02:12:02,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 02:12:02,930 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 02:12:02,932 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 02:12:02,933 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 02:12:02,933 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 02:12:02,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-simple/deep-nested.c [2022-01-11 02:12:02,975 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fd7ecc51/cdc7d9cdfa2746b9995f0de00f15e44e/FLAGcdef26ba4 [2022-01-11 02:12:03,332 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 02:12:03,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/deep-nested.c [2022-01-11 02:12:03,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fd7ecc51/cdc7d9cdfa2746b9995f0de00f15e44e/FLAGcdef26ba4 [2022-01-11 02:12:03,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fd7ecc51/cdc7d9cdfa2746b9995f0de00f15e44e [2022-01-11 02:12:03,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 02:12:03,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 02:12:03,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 02:12:03,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 02:12:03,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 02:12:03,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:12:03" (1/1) ... [2022-01-11 02:12:03,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a1649d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:12:03, skipping insertion in model container [2022-01-11 02:12:03,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 02:12:03" (1/1) ... [2022-01-11 02:12:03,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 02:12:03,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 02:12:03,532 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/deep-nested.c[625,638] [2022-01-11 02:12:03,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:12:03,545 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 02:12:03,560 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/deep-nested.c[625,638] [2022-01-11 02:12:03,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 02:12:03,574 INFO L208 MainTranslator]: Completed translation [2022-01-11 02:12:03,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:12:03 WrapperNode [2022-01-11 02:12:03,574 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 02:12:03,575 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 02:12:03,575 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 02:12:03,575 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 02:12:03,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:12:03" (1/1) ... [2022-01-11 02:12:03,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:12:03" (1/1) ... [2022-01-11 02:12:03,599 INFO L137 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 61 [2022-01-11 02:12:03,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 02:12:03,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 02:12:03,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 02:12:03,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 02:12:03,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:12:03" (1/1) ... [2022-01-11 02:12:03,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:12:03" (1/1) ... [2022-01-11 02:12:03,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:12:03" (1/1) ... [2022-01-11 02:12:03,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:12:03" (1/1) ... [2022-01-11 02:12:03,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:12:03" (1/1) ... [2022-01-11 02:12:03,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:12:03" (1/1) ... [2022-01-11 02:12:03,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:12:03" (1/1) ... [2022-01-11 02:12:03,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 02:12:03,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 02:12:03,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 02:12:03,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 02:12:03,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:12:03" (1/1) ... [2022-01-11 02:12:03,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 02:12:03,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:12:03,697 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 02:12:03,717 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 02:12:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 02:12:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 02:12:03,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 02:12:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 02:12:03,807 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 02:12:03,808 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 02:12:03,944 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 02:12:03,947 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 02:12:03,947 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-01-11 02:12:03,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:12:03 BoogieIcfgContainer [2022-01-11 02:12:03,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 02:12:03,949 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 02:12:03,949 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 02:12:03,968 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 02:12:03,969 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:12:03" (1/1) ... [2022-01-11 02:12:04,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:12:04 BasicIcfg [2022-01-11 02:12:04,046 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 02:12:04,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 02:12:04,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 02:12:04,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 02:12:04,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 02:12:03" (1/4) ... [2022-01-11 02:12:04,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6378f7ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:12:04, skipping insertion in model container [2022-01-11 02:12:04,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 02:12:03" (2/4) ... [2022-01-11 02:12:04,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6378f7ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 02:12:04, skipping insertion in model container [2022-01-11 02:12:04,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 02:12:03" (3/4) ... [2022-01-11 02:12:04,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6378f7ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 02:12:04, skipping insertion in model container [2022-01-11 02:12:04,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 02:12:04" (4/4) ... [2022-01-11 02:12:04,051 INFO L111 eAbstractionObserver]: Analyzing ICFG deep-nested.cTransformedIcfg [2022-01-11 02:12:04,071 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 02:12:04,071 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 02:12:04,111 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 02:12:04,115 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 02:12:04,116 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 02:12:04,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 02:12:04,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-11 02:12:04,127 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:12:04,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:12:04,128 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:12:04,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:12:04,132 INFO L85 PathProgramCache]: Analyzing trace with hash 551657624, now seen corresponding path program 1 times [2022-01-11 02:12:04,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:12:04,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663513711] [2022-01-11 02:12:04,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:12:04,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:12:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:12:04,439 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 02:12:04,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:12:04,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663513711] [2022-01-11 02:12:04,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663513711] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:12:04,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:12:04,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:12:04,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180115027] [2022-01-11 02:12:04,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:12:04,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:12:04,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:12:04,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:12:04,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:12:04,480 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 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 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 02:12:04,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:12:04,575 INFO L93 Difference]: Finished difference Result 39 states and 62 transitions. [2022-01-11 02:12:04,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 02:12:04,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-01-11 02:12:04,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:12:04,582 INFO L225 Difference]: With dead ends: 39 [2022-01-11 02:12:04,583 INFO L226 Difference]: Without dead ends: 18 [2022-01-11 02:12:04,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:12:04,586 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 21 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:12:04,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 20 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:12:04,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-11 02:12:04,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-01-11 02:12:04,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 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 02:12:04,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-01-11 02:12:04,609 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 9 [2022-01-11 02:12:04,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:12:04,609 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-01-11 02:12:04,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states 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 02:12:04,609 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-01-11 02:12:04,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-11 02:12:04,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:12:04,610 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:12:04,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 02:12:04,610 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:12:04,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:12:04,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1888481578, now seen corresponding path program 1 times [2022-01-11 02:12:04,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:12:04,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141248956] [2022-01-11 02:12:04,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:12:04,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:12:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:12:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:12:04,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:12:04,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141248956] [2022-01-11 02:12:04,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141248956] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:12:04,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906069252] [2022-01-11 02:12:04,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:12:04,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:12:04,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:12:04,978 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 02:12:05,010 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 02:12:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:12:05,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-11 02:12:05,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:12:05,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:12:05,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:12:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 02:12:05,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906069252] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:12:05,246 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:12:05,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 15 [2022-01-11 02:12:05,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530202274] [2022-01-11 02:12:05,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:12:05,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-11 02:12:05,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:12:05,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-11 02:12:05,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-01-11 02:12:05,250 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 02:12:05,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:12:05,797 INFO L93 Difference]: Finished difference Result 133 states and 180 transitions. [2022-01-11 02:12:05,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-11 02:12:05,797 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 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 12 [2022-01-11 02:12:05,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:12:05,798 INFO L225 Difference]: With dead ends: 133 [2022-01-11 02:12:05,798 INFO L226 Difference]: Without dead ends: 131 [2022-01-11 02:12:05,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=594, Unknown=0, NotChecked=0, Total=812 [2022-01-11 02:12:05,800 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 144 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 02:12:05,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 37 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 02:12:05,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-01-11 02:12:05,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 45. [2022-01-11 02:12:05,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 44 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:12:05,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2022-01-11 02:12:05,811 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 12 [2022-01-11 02:12:05,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:12:05,811 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2022-01-11 02:12:05,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states 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 02:12:05,811 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2022-01-11 02:12:05,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-11 02:12:05,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:12:05,812 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:12:05,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 02:12:06,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:12:06,025 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:12:06,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:12:06,026 INFO L85 PathProgramCache]: Analyzing trace with hash -671214993, now seen corresponding path program 1 times [2022-01-11 02:12:06,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:12:06,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721544601] [2022-01-11 02:12:06,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:12:06,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:12:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:12:06,066 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-11 02:12:06,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:12:06,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721544601] [2022-01-11 02:12:06,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721544601] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:12:06,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:12:06,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 02:12:06,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836302943] [2022-01-11 02:12:06,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:12:06,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:12:06,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:12:06,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:12:06,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 02:12:06,068 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 02:12:06,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:12:06,103 INFO L93 Difference]: Finished difference Result 67 states and 90 transitions. [2022-01-11 02:12:06,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 02:12:06,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 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 02:12:06,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:12:06,105 INFO L225 Difference]: With dead ends: 67 [2022-01-11 02:12:06,105 INFO L226 Difference]: Without dead ends: 47 [2022-01-11 02:12:06,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:12:06,106 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 29 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:12:06,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 9 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:12:06,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-01-11 02:12:06,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-01-11 02:12:06,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 46 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:12:06,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2022-01-11 02:12:06,122 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 21 [2022-01-11 02:12:06,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:12:06,122 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2022-01-11 02:12:06,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states 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 02:12:06,123 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2022-01-11 02:12:06,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-11 02:12:06,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:12:06,124 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:12:06,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 02:12:06,124 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:12:06,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:12:06,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1663675371, now seen corresponding path program 1 times [2022-01-11 02:12:06,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:12:06,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87195860] [2022-01-11 02:12:06,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:12:06,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:12:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:12:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-11 02:12:06,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:12:06,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87195860] [2022-01-11 02:12:06,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87195860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:12:06,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 02:12:06,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 02:12:06,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059629519] [2022-01-11 02:12:06,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:12:06,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 02:12:06,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:12:06,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 02:12:06,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-11 02:12:06,216 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states 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 02:12:06,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:12:06,268 INFO L93 Difference]: Finished difference Result 126 states and 169 transitions. [2022-01-11 02:12:06,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 02:12:06,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 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 24 [2022-01-11 02:12:06,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:12:06,269 INFO L225 Difference]: With dead ends: 126 [2022-01-11 02:12:06,269 INFO L226 Difference]: Without dead ends: 83 [2022-01-11 02:12:06,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-11 02:12:06,270 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 51 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:12:06,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 13 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:12:06,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-01-11 02:12:06,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 49. [2022-01-11 02:12:06,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 48 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:12:06,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 64 transitions. [2022-01-11 02:12:06,294 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 64 transitions. Word has length 24 [2022-01-11 02:12:06,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:12:06,295 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 64 transitions. [2022-01-11 02:12:06,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states 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 02:12:06,295 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 64 transitions. [2022-01-11 02:12:06,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-11 02:12:06,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:12:06,295 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:12:06,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 02:12:06,296 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:12:06,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:12:06,296 INFO L85 PathProgramCache]: Analyzing trace with hash 2059795416, now seen corresponding path program 1 times [2022-01-11 02:12:06,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:12:06,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308730187] [2022-01-11 02:12:06,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:12:06,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:12:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:12:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-11 02:12:06,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:12:06,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308730187] [2022-01-11 02:12:06,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308730187] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:12:06,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417281048] [2022-01-11 02:12:06,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:12:06,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:12:06,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:12:06,522 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 02:12:06,523 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 02:12:06,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:12:06,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-11 02:12:06,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:12:06,643 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-11 02:12:06,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:12:06,761 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-01-11 02:12:06,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417281048] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:12:06,762 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:12:06,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2022-01-11 02:12:06,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082439379] [2022-01-11 02:12:06,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:12:06,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-11 02:12:06,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:12:06,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-11 02:12:06,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-01-11 02:12:06,763 INFO L87 Difference]: Start difference. First operand 49 states and 64 transitions. Second operand has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:12:08,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:12:08,650 INFO L93 Difference]: Finished difference Result 297 states and 395 transitions. [2022-01-11 02:12:08,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-11 02:12:08,651 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-11 02:12:08,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:12:08,652 INFO L225 Difference]: With dead ends: 297 [2022-01-11 02:12:08,652 INFO L226 Difference]: Without dead ends: 172 [2022-01-11 02:12:08,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2012 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1053, Invalid=4497, Unknown=0, NotChecked=0, Total=5550 [2022-01-11 02:12:08,655 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 564 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 02:12:08,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [564 Valid, 30 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 02:12:08,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2022-01-11 02:12:08,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 81. [2022-01-11 02:12:08,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.25) internal successors, (100), 80 states have internal predecessors, (100), 0 states have call successors, (0), 0 states 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 02:12:08,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 100 transitions. [2022-01-11 02:12:08,672 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 100 transitions. Word has length 24 [2022-01-11 02:12:08,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:12:08,672 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 100 transitions. [2022-01-11 02:12:08,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.263157894736842) internal successors, (43), 19 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:12:08,673 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 100 transitions. [2022-01-11 02:12:08,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-11 02:12:08,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:12:08,673 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:12:08,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 02:12:08,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:12:08,886 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:12:08,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:12:08,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1862811484, now seen corresponding path program 1 times [2022-01-11 02:12:08,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:12:08,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017608704] [2022-01-11 02:12:08,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:12:08,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:12:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:12:09,151 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-01-11 02:12:09,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:12:09,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017608704] [2022-01-11 02:12:09,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017608704] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:12:09,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303062257] [2022-01-11 02:12:09,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:12:09,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:12:09,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:12:09,176 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 02:12:09,177 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 02:12:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:12:09,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-11 02:12:09,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:12:09,423 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 24 proven. 20 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-11 02:12:09,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:12:09,569 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-11 02:12:09,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303062257] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:12:09,569 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:12:09,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 11 [2022-01-11 02:12:09,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162449424] [2022-01-11 02:12:09,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:12:09,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-11 02:12:09,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:12:09,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-11 02:12:09,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-01-11 02:12:09,579 INFO L87 Difference]: Start difference. First operand 81 states and 100 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:12:09,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:12:09,746 INFO L93 Difference]: Finished difference Result 171 states and 212 transitions. [2022-01-11 02:12:09,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-11 02:12:09,747 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-01-11 02:12:09,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:12:09,747 INFO L225 Difference]: With dead ends: 171 [2022-01-11 02:12:09,747 INFO L226 Difference]: Without dead ends: 169 [2022-01-11 02:12:09,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 68 SyntacticMatches, 12 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2022-01-11 02:12:09,748 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 95 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:12:09,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 23 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:12:09,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-01-11 02:12:09,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 68. [2022-01-11 02:12:09,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 67 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:12:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2022-01-11 02:12:09,777 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 39 [2022-01-11 02:12:09,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:12:09,777 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2022-01-11 02:12:09,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:12:09,777 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2022-01-11 02:12:09,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-11 02:12:09,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:12:09,778 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 02:12:09,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-11 02:12:09,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:12:09,997 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:12:09,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:12:09,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1032015181, now seen corresponding path program 2 times [2022-01-11 02:12:09,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:12:09,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600328175] [2022-01-11 02:12:09,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:12:09,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:12:10,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:12:10,334 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-11 02:12:10,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:12:10,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600328175] [2022-01-11 02:12:10,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600328175] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:12:10,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903382257] [2022-01-11 02:12:10,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 02:12:10,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:12:10,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:12:10,349 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:12:10,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-11 02:12:10,397 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-11 02:12:10,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:12:10,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-11 02:12:10,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:12:10,552 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-01-11 02:12:10,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-11 02:12:10,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903382257] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 02:12:10,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-11 02:12:10,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-01-11 02:12:10,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198115319] [2022-01-11 02:12:10,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 02:12:10,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 02:12:10,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:12:10,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 02:12:10,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-01-11 02:12:10,554 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 02:12:10,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:12:10,593 INFO L93 Difference]: Finished difference Result 127 states and 153 transitions. [2022-01-11 02:12:10,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 02:12:10,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-01-11 02:12:10,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:12:10,594 INFO L225 Difference]: With dead ends: 127 [2022-01-11 02:12:10,594 INFO L226 Difference]: Without dead ends: 125 [2022-01-11 02:12:10,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-01-11 02:12:10,595 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:12:10,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:12:10,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-01-11 02:12:10,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 87. [2022-01-11 02:12:10,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.2209302325581395) internal successors, (105), 86 states have internal predecessors, (105), 0 states have call successors, (0), 0 states 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 02:12:10,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 105 transitions. [2022-01-11 02:12:10,610 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 105 transitions. Word has length 51 [2022-01-11 02:12:10,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:12:10,610 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 105 transitions. [2022-01-11 02:12:10,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states 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 02:12:10,610 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 105 transitions. [2022-01-11 02:12:10,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 02:12:10,611 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:12:10,611 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-01-11 02:12:10,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-11 02:12:10,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:12:10,828 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:12:10,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:12:10,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1673015106, now seen corresponding path program 3 times [2022-01-11 02:12:10,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:12:10,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002162835] [2022-01-11 02:12:10,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:12:10,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:12:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:12:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-01-11 02:12:10,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:12:10,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002162835] [2022-01-11 02:12:10,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002162835] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:12:10,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393270873] [2022-01-11 02:12:10,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 02:12:10,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:12:10,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:12:10,953 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:12:10,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-11 02:12:10,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-11 02:12:10,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:12:10,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-11 02:12:10,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:12:11,243 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-01-11 02:12:11,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:12:11,395 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-01-11 02:12:11,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393270873] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:12:11,395 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:12:11,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-01-11 02:12:11,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636538021] [2022-01-11 02:12:11,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:12:11,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 02:12:11,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:12:11,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 02:12:11,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-11 02:12:11,396 INFO L87 Difference]: Start difference. First operand 87 states and 105 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:12:11,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:12:11,518 INFO L93 Difference]: Finished difference Result 270 states and 329 transitions. [2022-01-11 02:12:11,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 02:12:11,519 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-01-11 02:12:11,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:12:11,520 INFO L225 Difference]: With dead ends: 270 [2022-01-11 02:12:11,520 INFO L226 Difference]: Without dead ends: 268 [2022-01-11 02:12:11,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-11 02:12:11,520 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:12:11,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 39 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:12:11,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-01-11 02:12:11,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 159. [2022-01-11 02:12:11,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 1.2151898734177216) internal successors, (192), 158 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 02:12:11,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 192 transitions. [2022-01-11 02:12:11,561 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 192 transitions. Word has length 66 [2022-01-11 02:12:11,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:12:11,561 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 192 transitions. [2022-01-11 02:12:11,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:12:11,561 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 192 transitions. [2022-01-11 02:12:11,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-11 02:12:11,567 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:12:11,567 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 8, 7, 7, 7, 6, 6, 6, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2022-01-11 02:12:11,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-11 02:12:11,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:12:11,768 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:12:11,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:12:11,769 INFO L85 PathProgramCache]: Analyzing trace with hash -62617545, now seen corresponding path program 4 times [2022-01-11 02:12:11,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:12:11,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281021676] [2022-01-11 02:12:11,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:12:11,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:12:11,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:12:11,900 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 0 proven. 434 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2022-01-11 02:12:11,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:12:11,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281021676] [2022-01-11 02:12:11,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281021676] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:12:11,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715512522] [2022-01-11 02:12:11,900 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-11 02:12:11,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:12:11,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:12:11,902 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:12:11,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-11 02:12:12,011 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-11 02:12:12,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:12:12,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-11 02:12:12,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:12:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2022-01-11 02:12:12,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:12:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 198 proven. 2 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2022-01-11 02:12:12,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715512522] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:12:12,552 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:12:12,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2022-01-11 02:12:12,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590940861] [2022-01-11 02:12:12,552 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:12:12,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-11 02:12:12,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:12:12,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-11 02:12:12,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-01-11 02:12:12,553 INFO L87 Difference]: Start difference. First operand 159 states and 192 transitions. Second operand has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 15 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:12:12,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:12:12,841 INFO L93 Difference]: Finished difference Result 496 states and 603 transitions. [2022-01-11 02:12:12,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 02:12:12,841 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 15 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2022-01-11 02:12:12,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:12:12,842 INFO L225 Difference]: With dead ends: 496 [2022-01-11 02:12:12,842 INFO L226 Difference]: Without dead ends: 362 [2022-01-11 02:12:12,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462 [2022-01-11 02:12:12,843 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 127 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:12:12,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 51 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:12:12,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-01-11 02:12:12,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 264. [2022-01-11 02:12:12,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.2053231939163498) internal successors, (317), 263 states have internal predecessors, (317), 0 states have call successors, (0), 0 states 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 02:12:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 317 transitions. [2022-01-11 02:12:12,887 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 317 transitions. Word has length 120 [2022-01-11 02:12:12,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:12:12,890 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 317 transitions. [2022-01-11 02:12:12,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 15 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:12:12,890 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 317 transitions. [2022-01-11 02:12:12,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-01-11 02:12:12,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:12:12,892 INFO L514 BasicCegarLoop]: trace histogram [26, 25, 25, 13, 12, 12, 12, 11, 11, 11, 10, 10, 5, 4, 4, 1, 1, 1, 1] [2022-01-11 02:12:12,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-11 02:12:13,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:12:13,102 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:12:13,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:12:13,103 INFO L85 PathProgramCache]: Analyzing trace with hash -863767162, now seen corresponding path program 5 times [2022-01-11 02:12:13,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:12:13,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030463645] [2022-01-11 02:12:13,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:12:13,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:12:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:12:13,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 250 proven. 395 refuted. 0 times theorem prover too weak. 1477 trivial. 0 not checked. [2022-01-11 02:12:13,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:12:13,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030463645] [2022-01-11 02:12:13,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030463645] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:12:13,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362029394] [2022-01-11 02:12:13,322 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-11 02:12:13,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:12:13,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:12:13,323 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:12:13,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-11 02:12:13,449 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-01-11 02:12:13,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:12:13,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-11 02:12:13,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:12:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 782 proven. 14 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2022-01-11 02:12:13,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:12:14,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2122 backedges. 782 proven. 14 refuted. 0 times theorem prover too weak. 1326 trivial. 0 not checked. [2022-01-11 02:12:14,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362029394] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:12:14,068 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:12:14,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 15 [2022-01-11 02:12:14,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772687581] [2022-01-11 02:12:14,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:12:14,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-11 02:12:14,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:12:14,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-11 02:12:14,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-01-11 02:12:14,070 INFO L87 Difference]: Start difference. First operand 264 states and 317 transitions. Second operand has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 02:12:14,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:12:14,588 INFO L93 Difference]: Finished difference Result 1353 states and 1667 transitions. [2022-01-11 02:12:14,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-11 02:12:14,589 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 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 195 [2022-01-11 02:12:14,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:12:14,592 INFO L225 Difference]: With dead ends: 1353 [2022-01-11 02:12:14,592 INFO L226 Difference]: Without dead ends: 1094 [2022-01-11 02:12:14,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 412 GetRequests, 380 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=221, Invalid=771, Unknown=0, NotChecked=0, Total=992 [2022-01-11 02:12:14,596 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 59 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 02:12:14,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 33 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 02:12:14,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2022-01-11 02:12:14,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 581. [2022-01-11 02:12:14,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 1.1913793103448276) internal successors, (691), 580 states have internal predecessors, (691), 0 states have call successors, (0), 0 states 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 02:12:14,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 691 transitions. [2022-01-11 02:12:14,704 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 691 transitions. Word has length 195 [2022-01-11 02:12:14,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:12:14,704 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 691 transitions. [2022-01-11 02:12:14,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.866666666666666) internal successors, (103), 15 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 02:12:14,705 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 691 transitions. [2022-01-11 02:12:14,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2022-01-11 02:12:14,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:12:14,708 INFO L514 BasicCegarLoop]: trace histogram [72, 71, 71, 47, 46, 46, 23, 22, 22, 11, 10, 10, 5, 4, 4, 1, 1, 1, 1] [2022-01-11 02:12:14,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-11 02:12:14,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:12:14,916 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:12:14,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:12:14,916 INFO L85 PathProgramCache]: Analyzing trace with hash 674713646, now seen corresponding path program 6 times [2022-01-11 02:12:14,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:12:14,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591363162] [2022-01-11 02:12:14,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:12:14,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:12:15,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:12:15,578 INFO L134 CoverageAnalysis]: Checked inductivity of 16250 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 15806 trivial. 0 not checked. [2022-01-11 02:12:15,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:12:15,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591363162] [2022-01-11 02:12:15,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591363162] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:12:15,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986971514] [2022-01-11 02:12:15,579 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-11 02:12:15,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:12:15,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:12:15,596 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:12:15,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-11 02:12:15,703 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-11 02:12:15,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:12:15,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-11 02:12:15,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:12:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 16250 backedges. 442 proven. 2 refuted. 0 times theorem prover too weak. 15806 trivial. 0 not checked. [2022-01-11 02:12:16,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:12:17,200 INFO L134 CoverageAnalysis]: Checked inductivity of 16250 backedges. 0 proven. 444 refuted. 0 times theorem prover too weak. 15806 trivial. 0 not checked. [2022-01-11 02:12:17,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986971514] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:12:17,201 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:12:17,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-01-11 02:12:17,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535899845] [2022-01-11 02:12:17,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:12:17,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-11 02:12:17,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:12:17,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-11 02:12:17,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 02:12:17,203 INFO L87 Difference]: Start difference. First operand 581 states and 691 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 02:12:17,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:12:17,410 INFO L93 Difference]: Finished difference Result 1470 states and 1783 transitions. [2022-01-11 02:12:17,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 02:12:17,410 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 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 468 [2022-01-11 02:12:17,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:12:17,412 INFO L225 Difference]: With dead ends: 1470 [2022-01-11 02:12:17,412 INFO L226 Difference]: Without dead ends: 913 [2022-01-11 02:12:17,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 931 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2022-01-11 02:12:17,413 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 35 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 02:12:17,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 16 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 02:12:17,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2022-01-11 02:12:17,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 544. [2022-01-11 02:12:17,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 1.16390423572744) internal successors, (632), 543 states have internal predecessors, (632), 0 states have call successors, (0), 0 states 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 02:12:17,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 632 transitions. [2022-01-11 02:12:17,506 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 632 transitions. Word has length 468 [2022-01-11 02:12:17,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:12:17,506 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 632 transitions. [2022-01-11 02:12:17,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 0 states have call successors, (0), 0 states 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 02:12:17,506 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 632 transitions. [2022-01-11 02:12:17,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2022-01-11 02:12:17,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:12:17,511 INFO L514 BasicCegarLoop]: trace histogram [97, 96, 96, 47, 46, 46, 23, 22, 22, 11, 10, 10, 5, 4, 4, 1, 1, 1, 1] [2022-01-11 02:12:17,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-11 02:12:17,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-11 02:12:17,728 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:12:17,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:12:17,728 INFO L85 PathProgramCache]: Analyzing trace with hash 224496568, now seen corresponding path program 7 times [2022-01-11 02:12:17,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:12:17,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485258953] [2022-01-11 02:12:17,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:12:17,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:12:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:12:18,526 INFO L134 CoverageAnalysis]: Checked inductivity of 23675 backedges. 258 proven. 757 refuted. 0 times theorem prover too weak. 22660 trivial. 0 not checked. [2022-01-11 02:12:18,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:12:18,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485258953] [2022-01-11 02:12:18,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485258953] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:12:18,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646010246] [2022-01-11 02:12:18,527 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-11 02:12:18,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:12:18,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:12:18,529 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:12:18,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-11 02:12:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:12:18,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 4053 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 02:12:18,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:12:20,058 INFO L134 CoverageAnalysis]: Checked inductivity of 23675 backedges. 10706 proven. 1799 refuted. 0 times theorem prover too weak. 11170 trivial. 0 not checked. [2022-01-11 02:12:20,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:12:20,894 INFO L134 CoverageAnalysis]: Checked inductivity of 23675 backedges. 10700 proven. 1804 refuted. 0 times theorem prover too weak. 11171 trivial. 0 not checked. [2022-01-11 02:12:20,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646010246] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:12:20,895 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:12:20,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 23 [2022-01-11 02:12:20,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57311855] [2022-01-11 02:12:20,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:12:20,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-11 02:12:20,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:12:20,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-11 02:12:20,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2022-01-11 02:12:20,896 INFO L87 Difference]: Start difference. First operand 544 states and 632 transitions. Second operand has 23 states, 23 states have (on average 6.913043478260869) internal successors, (159), 23 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 02:12:26,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:12:26,397 INFO L93 Difference]: Finished difference Result 2931 states and 3448 transitions. [2022-01-11 02:12:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-11 02:12:26,398 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.913043478260869) internal successors, (159), 23 states have internal predecessors, (159), 0 states have call successors, (0), 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 543 [2022-01-11 02:12:26,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:12:26,402 INFO L225 Difference]: With dead ends: 2931 [2022-01-11 02:12:26,403 INFO L226 Difference]: Without dead ends: 1930 [2022-01-11 02:12:26,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1176 GetRequests, 1072 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3816 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1965, Invalid=9165, Unknown=0, NotChecked=0, Total=11130 [2022-01-11 02:12:26,406 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 473 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-11 02:12:26,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [473 Valid, 93 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-11 02:12:26,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2022-01-11 02:12:26,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1429. [2022-01-11 02:12:26,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1429 states, 1428 states have (on average 1.1295518207282913) internal successors, (1613), 1428 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states 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 02:12:26,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 1613 transitions. [2022-01-11 02:12:26,729 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 1613 transitions. Word has length 543 [2022-01-11 02:12:26,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:12:26,729 INFO L470 AbstractCegarLoop]: Abstraction has 1429 states and 1613 transitions. [2022-01-11 02:12:26,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.913043478260869) internal successors, (159), 23 states have internal predecessors, (159), 0 states have call successors, (0), 0 states 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 02:12:26,729 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 1613 transitions. [2022-01-11 02:12:26,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 826 [2022-01-11 02:12:26,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:12:26,739 INFO L514 BasicCegarLoop]: trace histogram [179, 178, 178, 59, 58, 58, 23, 22, 22, 11, 10, 10, 5, 4, 4, 1, 1, 1, 1] [2022-01-11 02:12:26,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-11 02:12:26,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:12:26,955 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:12:26,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:12:26,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1386691606, now seen corresponding path program 8 times [2022-01-11 02:12:26,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:12:26,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764359572] [2022-01-11 02:12:26,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:12:26,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:12:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:12:28,762 INFO L134 CoverageAnalysis]: Checked inductivity of 65468 backedges. 48 proven. 12381 refuted. 0 times theorem prover too weak. 53039 trivial. 0 not checked. [2022-01-11 02:12:28,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:12:28,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764359572] [2022-01-11 02:12:28,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764359572] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:12:28,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382906568] [2022-01-11 02:12:28,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 02:12:28,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:12:28,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:12:28,764 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:12:28,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-11 02:12:29,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 02:12:29,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:12:29,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 6261 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-11 02:12:29,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:12:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 65468 backedges. 11988 proven. 395 refuted. 0 times theorem prover too weak. 53085 trivial. 0 not checked. [2022-01-11 02:12:30,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:12:31,650 INFO L134 CoverageAnalysis]: Checked inductivity of 65468 backedges. 11934 proven. 445 refuted. 0 times theorem prover too weak. 53089 trivial. 0 not checked. [2022-01-11 02:12:31,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382906568] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:12:31,650 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:12:31,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 22 [2022-01-11 02:12:31,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965444167] [2022-01-11 02:12:31,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:12:31,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-11 02:12:31,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:12:31,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-11 02:12:31,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2022-01-11 02:12:31,652 INFO L87 Difference]: Start difference. First operand 1429 states and 1613 transitions. Second operand has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 22 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:12:34,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 02:12:34,576 INFO L93 Difference]: Finished difference Result 5664 states and 6457 transitions. [2022-01-11 02:12:34,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-11 02:12:34,576 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 22 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 825 [2022-01-11 02:12:34,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 02:12:34,585 INFO L225 Difference]: With dead ends: 5664 [2022-01-11 02:12:34,585 INFO L226 Difference]: Without dead ends: 4251 [2022-01-11 02:12:34,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1684 GetRequests, 1638 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=479, Invalid=1777, Unknown=0, NotChecked=0, Total=2256 [2022-01-11 02:12:34,588 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 228 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-11 02:12:34,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 70 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-11 02:12:34,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4251 states. [2022-01-11 02:12:35,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4251 to 4057. [2022-01-11 02:12:35,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4057 states, 4056 states have (on average 1.1148915187376727) internal successors, (4522), 4056 states have internal predecessors, (4522), 0 states have call successors, (0), 0 states 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 02:12:35,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4057 states to 4057 states and 4522 transitions. [2022-01-11 02:12:35,581 INFO L78 Accepts]: Start accepts. Automaton has 4057 states and 4522 transitions. Word has length 825 [2022-01-11 02:12:35,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 02:12:35,581 INFO L470 AbstractCegarLoop]: Abstraction has 4057 states and 4522 transitions. [2022-01-11 02:12:35,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.7727272727272725) internal successors, (127), 22 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 02:12:35,581 INFO L276 IsEmpty]: Start isEmpty. Operand 4057 states and 4522 transitions. [2022-01-11 02:12:35,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2359 [2022-01-11 02:12:35,614 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 02:12:35,614 INFO L514 BasicCegarLoop]: trace histogram [537, 536, 536, 169, 168, 168, 66, 65, 65, 11, 10, 10, 5, 4, 4, 1, 1, 1, 1] [2022-01-11 02:12:35,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-11 02:12:35,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-11 02:12:35,827 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 02:12:35,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 02:12:35,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1896317436, now seen corresponding path program 9 times [2022-01-11 02:12:35,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 02:12:35,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277594671] [2022-01-11 02:12:35,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 02:12:35,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 02:12:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 02:12:50,584 INFO L134 CoverageAnalysis]: Checked inductivity of 581841 backedges. 16 proven. 208338 refuted. 0 times theorem prover too weak. 373487 trivial. 0 not checked. [2022-01-11 02:12:50,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 02:12:50,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277594671] [2022-01-11 02:12:50,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277594671] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 02:12:50,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953729289] [2022-01-11 02:12:50,585 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-11 02:12:50,585 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 02:12:50,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 02:12:50,604 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 02:12:50,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-11 02:12:50,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-11 02:12:50,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 02:12:51,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 54 conjunts are in the unsatisfiable core [2022-01-11 02:12:51,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 02:12:56,959 INFO L134 CoverageAnalysis]: Checked inductivity of 581841 backedges. 205252 proven. 27 refuted. 0 times theorem prover too weak. 376562 trivial. 0 not checked. [2022-01-11 02:12:56,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 02:13:03,572 INFO L134 CoverageAnalysis]: Checked inductivity of 581841 backedges. 0 proven. 205279 refuted. 0 times theorem prover too weak. 376562 trivial. 0 not checked. [2022-01-11 02:13:03,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953729289] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 02:13:03,572 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 02:13:03,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 20] total 38 [2022-01-11 02:13:03,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789932791] [2022-01-11 02:13:03,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 02:13:03,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-01-11 02:13:03,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 02:13:03,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-01-11 02:13:03,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1025, Unknown=0, NotChecked=0, Total=1406 [2022-01-11 02:13:03,577 INFO L87 Difference]: Start difference. First operand 4057 states and 4522 transitions. Second operand has 38 states, 38 states have (on average 4.315789473684211) internal successors, (164), 38 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)