/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/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 06:23:45,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 06:23:45,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 06:23:45,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 06:23:45,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 06:23:45,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 06:23:45,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 06:23:45,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 06:23:45,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 06:23:45,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 06:23:45,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 06:23:45,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 06:23:45,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 06:23:45,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 06:23:45,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 06:23:45,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 06:23:45,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 06:23:45,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 06:23:45,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 06:23:45,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 06:23:45,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 06:23:45,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 06:23:45,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 06:23:45,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 06:23:45,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 06:23:45,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 06:23:45,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 06:23:45,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 06:23:45,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 06:23:45,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 06:23:45,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 06:23:45,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 06:23:45,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 06:23:45,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 06:23:45,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 06:23:45,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 06:23:45,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 06:23:45,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 06:23:45,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 06:23:45,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 06:23:45,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 06:23:45,619 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 06:23:45,643 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 06:23:45,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 06:23:45,643 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 06:23:45,643 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 06:23:45,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 06:23:45,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 06:23:45,644 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 06:23:45,645 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 06:23:45,645 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 06:23:45,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 06:23:45,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 06:23:45,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 06:23:45,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 06:23:45,646 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 06:23:45,646 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 06:23:45,646 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 06:23:45,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 06:23:45,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 06:23:45,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 06:23:45,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 06:23:45,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 06:23:45,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:23:45,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 06:23:45,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 06:23:45,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 06:23:45,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 06:23:45,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 06:23:45,647 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 06:23:45,647 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 06:23:45,647 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 06:23:45,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 06:23:45,647 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 06:23:45,648 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 06:23:45,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 06:23:45,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 06:23:45,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 06:23:45,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 06:23:45,851 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 06:23:45,857 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 06:23:45,858 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-01-11 06:23:45,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665b7dff9/e74f6784cf4a4500b7dba528cf419f1b/FLAG76cfc8cc9 [2022-01-11 06:23:46,313 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 06:23:46,314 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2022-01-11 06:23:46,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665b7dff9/e74f6784cf4a4500b7dba528cf419f1b/FLAG76cfc8cc9 [2022-01-11 06:23:46,348 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/665b7dff9/e74f6784cf4a4500b7dba528cf419f1b [2022-01-11 06:23:46,350 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 06:23:46,352 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 06:23:46,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 06:23:46,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 06:23:46,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 06:23:46,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:23:46" (1/1) ... [2022-01-11 06:23:46,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61739629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:46, skipping insertion in model container [2022-01-11 06:23:46,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 06:23:46" (1/1) ... [2022-01-11 06:23:46,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 06:23:46,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 06:23:46,575 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2022-01-11 06:23:46,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:23:46,612 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 06:23:46,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[7235,7248] [2022-01-11 06:23:46,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 06:23:46,702 INFO L208 MainTranslator]: Completed translation [2022-01-11 06:23:46,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:46 WrapperNode [2022-01-11 06:23:46,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 06:23:46,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 06:23:46,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 06:23:46,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 06:23:46,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:46" (1/1) ... [2022-01-11 06:23:46,717 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:46" (1/1) ... [2022-01-11 06:23:46,741 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 570 [2022-01-11 06:23:46,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 06:23:46,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 06:23:46,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 06:23:46,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 06:23:46,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:46" (1/1) ... [2022-01-11 06:23:46,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:46" (1/1) ... [2022-01-11 06:23:46,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:46" (1/1) ... [2022-01-11 06:23:46,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:46" (1/1) ... [2022-01-11 06:23:46,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:46" (1/1) ... [2022-01-11 06:23:46,766 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:46" (1/1) ... [2022-01-11 06:23:46,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:46" (1/1) ... [2022-01-11 06:23:46,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 06:23:46,771 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 06:23:46,771 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 06:23:46,771 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 06:23:46,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:46" (1/1) ... [2022-01-11 06:23:46,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 06:23:46,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 06:23:46,797 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 06:23:46,798 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 06:23:46,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 06:23:46,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 06:23:46,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 06:23:46,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 06:23:46,914 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 06:23:46,915 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 06:23:47,322 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 06:23:47,328 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 06:23:47,328 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-11 06:23:47,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:23:47 BoogieIcfgContainer [2022-01-11 06:23:47,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 06:23:47,331 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 06:23:47,331 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 06:23:47,332 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 06:23:47,334 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:23:47" (1/1) ... [2022-01-11 06:23:47,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:23:47 BasicIcfg [2022-01-11 06:23:47,676 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 06:23:47,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 06:23:47,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 06:23:47,680 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 06:23:47,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 06:23:46" (1/4) ... [2022-01-11 06:23:47,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660b3d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:23:47, skipping insertion in model container [2022-01-11 06:23:47,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 06:23:46" (2/4) ... [2022-01-11 06:23:47,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660b3d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 06:23:47, skipping insertion in model container [2022-01-11 06:23:47,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 06:23:47" (3/4) ... [2022-01-11 06:23:47,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@660b3d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 06:23:47, skipping insertion in model container [2022-01-11 06:23:47,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 06:23:47" (4/4) ... [2022-01-11 06:23:47,683 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.cTransformedIcfg [2022-01-11 06:23:47,687 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 06:23:47,688 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 06:23:47,719 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 06:23:47,724 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 06:23:47,724 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 06:23:47,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 135 states, 133 states have (on average 1.7744360902255638) internal successors, (236), 134 states have internal predecessors, (236), 0 states have call successors, (0), 0 states 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 06:23:47,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-11 06:23:47,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:47,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:23:47,740 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:47,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:47,744 INFO L85 PathProgramCache]: Analyzing trace with hash -753386120, now seen corresponding path program 1 times [2022-01-11 06:23:47,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:47,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413296330] [2022-01-11 06:23:47,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:47,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:48,306 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 06:23:48,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:48,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413296330] [2022-01-11 06:23:48,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413296330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:48,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:48,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:23:48,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784794214] [2022-01-11 06:23:48,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:48,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:23:48,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:48,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:23:48,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:48,345 INFO L87 Difference]: Start difference. First operand has 135 states, 133 states have (on average 1.7744360902255638) internal successors, (236), 134 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:23:50,403 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:23:52,617 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:23:52,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:52,897 INFO L93 Difference]: Finished difference Result 288 states and 491 transitions. [2022-01-11 06:23:52,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:23:52,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-11 06:23:52,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:52,907 INFO L225 Difference]: With dead ends: 288 [2022-01-11 06:23:52,908 INFO L226 Difference]: Without dead ends: 201 [2022-01-11 06:23:52,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:52,913 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 131 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-01-11 06:23:52,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 496 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2022-01-11 06:23:52,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-01-11 06:23:52,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2022-01-11 06:23:52,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.5808080808080809) internal successors, (313), 198 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 06:23:52,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 313 transitions. [2022-01-11 06:23:52,986 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 313 transitions. Word has length 57 [2022-01-11 06:23:52,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:52,986 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 313 transitions. [2022-01-11 06:23:52,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:23:52,987 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 313 transitions. [2022-01-11 06:23:52,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 06:23:52,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:52,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:23:52,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 06:23:52,994 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:52,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:52,997 INFO L85 PathProgramCache]: Analyzing trace with hash -694755855, now seen corresponding path program 1 times [2022-01-11 06:23:52,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:52,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702535363] [2022-01-11 06:23:52,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:52,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:53,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:53,170 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 06:23:53,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:53,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702535363] [2022-01-11 06:23:53,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702535363] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:53,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:53,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:23:53,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730548297] [2022-01-11 06:23:53,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:53,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:23:53,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:53,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:23:53,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:53,179 INFO L87 Difference]: Start difference. First operand 199 states and 313 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:23:53,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:53,228 INFO L93 Difference]: Finished difference Result 338 states and 548 transitions. [2022-01-11 06:23:53,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:23:53,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-11 06:23:53,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:53,232 INFO L225 Difference]: With dead ends: 338 [2022-01-11 06:23:53,232 INFO L226 Difference]: Without dead ends: 260 [2022-01-11 06:23:53,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:53,234 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 116 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:23:53,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 468 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:53,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-01-11 06:23:53,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 258. [2022-01-11 06:23:53,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.6070038910505837) internal successors, (413), 257 states have internal predecessors, (413), 0 states have call successors, (0), 0 states 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 06:23:53,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 413 transitions. [2022-01-11 06:23:53,271 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 413 transitions. Word has length 59 [2022-01-11 06:23:53,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:53,272 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 413 transitions. [2022-01-11 06:23:53,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:23:53,273 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 413 transitions. [2022-01-11 06:23:53,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-11 06:23:53,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:53,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:23:53,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 06:23:53,281 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:53,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:53,283 INFO L85 PathProgramCache]: Analyzing trace with hash 734424448, now seen corresponding path program 1 times [2022-01-11 06:23:53,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:53,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814231141] [2022-01-11 06:23:53,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:53,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:53,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:53,483 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 06:23:53,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:53,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814231141] [2022-01-11 06:23:53,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814231141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:53,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:53,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:23:53,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433705372] [2022-01-11 06:23:53,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:53,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:23:53,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:53,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:23:53,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:23:53,485 INFO L87 Difference]: Start difference. First operand 258 states and 413 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:23:53,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:53,595 INFO L93 Difference]: Finished difference Result 732 states and 1168 transitions. [2022-01-11 06:23:53,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:23:53,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-01-11 06:23:53,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:53,598 INFO L225 Difference]: With dead ends: 732 [2022-01-11 06:23:53,598 INFO L226 Difference]: Without dead ends: 499 [2022-01-11 06:23:53,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:23:53,600 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 417 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:23:53,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [417 Valid, 493 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:53,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2022-01-11 06:23:53,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 497. [2022-01-11 06:23:53,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.594758064516129) internal successors, (791), 496 states have internal predecessors, (791), 0 states have call successors, (0), 0 states 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 06:23:53,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 791 transitions. [2022-01-11 06:23:53,630 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 791 transitions. Word has length 59 [2022-01-11 06:23:53,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:53,633 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 791 transitions. [2022-01-11 06:23:53,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:23:53,633 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 791 transitions. [2022-01-11 06:23:53,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-11 06:23:53,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:53,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:23:53,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 06:23:53,634 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:53,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:53,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2082807306, now seen corresponding path program 1 times [2022-01-11 06:23:53,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:53,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8008634] [2022-01-11 06:23:53,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:53,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:53,709 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 06:23:53,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:53,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8008634] [2022-01-11 06:23:53,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8008634] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:53,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:53,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:23:53,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982732657] [2022-01-11 06:23:53,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:53,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:23:53,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:53,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:23:53,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:53,712 INFO L87 Difference]: Start difference. First operand 497 states and 791 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 06:23:53,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:53,771 INFO L93 Difference]: Finished difference Result 1453 states and 2309 transitions. [2022-01-11 06:23:53,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:23:53,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-11 06:23:53,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:53,777 INFO L225 Difference]: With dead ends: 1453 [2022-01-11 06:23:53,777 INFO L226 Difference]: Without dead ends: 984 [2022-01-11 06:23:53,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:53,785 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 193 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:23:53,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [193 Valid, 589 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:53,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2022-01-11 06:23:53,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 499. [2022-01-11 06:23:53,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.5923694779116466) internal successors, (793), 498 states have internal predecessors, (793), 0 states have call successors, (0), 0 states 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 06:23:53,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 793 transitions. [2022-01-11 06:23:53,826 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 793 transitions. Word has length 60 [2022-01-11 06:23:53,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:53,826 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 793 transitions. [2022-01-11 06:23:53,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 06:23:53,827 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 793 transitions. [2022-01-11 06:23:53,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 06:23:53,829 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:53,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:23:53,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 06:23:53,829 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:53,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:53,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2059998971, now seen corresponding path program 1 times [2022-01-11 06:23:53,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:53,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758440130] [2022-01-11 06:23:53,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:53,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:53,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:53,999 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 06:23:53,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:53,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758440130] [2022-01-11 06:23:53,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758440130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:54,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:54,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:23:54,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443102048] [2022-01-11 06:23:54,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:54,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:23:54,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:54,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:23:54,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:23:54,002 INFO L87 Difference]: Start difference. First operand 499 states and 793 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 06:23:54,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:54,239 INFO L93 Difference]: Finished difference Result 1918 states and 3046 transitions. [2022-01-11 06:23:54,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:23:54,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-11 06:23:54,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:54,245 INFO L225 Difference]: With dead ends: 1918 [2022-01-11 06:23:54,245 INFO L226 Difference]: Without dead ends: 1431 [2022-01-11 06:23:54,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:23:54,247 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 522 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 06:23:54,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 850 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 06:23:54,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2022-01-11 06:23:54,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 960. [2022-01-11 06:23:54,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 1.5787278415015642) internal successors, (1514), 959 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states 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 06:23:54,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1514 transitions. [2022-01-11 06:23:54,325 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1514 transitions. Word has length 61 [2022-01-11 06:23:54,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:54,325 INFO L470 AbstractCegarLoop]: Abstraction has 960 states and 1514 transitions. [2022-01-11 06:23:54,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 06:23:54,325 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1514 transitions. [2022-01-11 06:23:54,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-11 06:23:54,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:54,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:23:54,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 06:23:54,327 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:54,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:54,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1393761825, now seen corresponding path program 1 times [2022-01-11 06:23:54,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:54,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724041497] [2022-01-11 06:23:54,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:54,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:54,398 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 06:23:54,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:54,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724041497] [2022-01-11 06:23:54,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724041497] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:54,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:54,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:23:54,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706345524] [2022-01-11 06:23:54,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:54,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:23:54,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:54,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:23:54,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:23:54,400 INFO L87 Difference]: Start difference. First operand 960 states and 1514 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 06:23:54,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:54,476 INFO L93 Difference]: Finished difference Result 1676 states and 2637 transitions. [2022-01-11 06:23:54,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:23:54,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-11 06:23:54,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:54,479 INFO L225 Difference]: With dead ends: 1676 [2022-01-11 06:23:54,479 INFO L226 Difference]: Without dead ends: 732 [2022-01-11 06:23:54,480 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 06:23:54,481 INFO L933 BasicCegarLoop]: 248 mSDtfsCounter, 69 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:23:54,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 647 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:54,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-01-11 06:23:54,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 732. [2022-01-11 06:23:54,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 1.5690834473324213) internal successors, (1147), 731 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states 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 06:23:54,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1147 transitions. [2022-01-11 06:23:54,551 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1147 transitions. Word has length 61 [2022-01-11 06:23:54,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:54,551 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1147 transitions. [2022-01-11 06:23:54,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states 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 06:23:54,552 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1147 transitions. [2022-01-11 06:23:54,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-11 06:23:54,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:54,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:23:54,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 06:23:54,553 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:54,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:54,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1711527321, now seen corresponding path program 1 times [2022-01-11 06:23:54,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:54,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129773916] [2022-01-11 06:23:54,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:54,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:54,592 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 06:23:54,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:54,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129773916] [2022-01-11 06:23:54,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129773916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:54,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:54,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:23:54,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785455337] [2022-01-11 06:23:54,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:54,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:23:54,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:54,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:23:54,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:54,594 INFO L87 Difference]: Start difference. First operand 732 states and 1147 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 06:23:54,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:54,664 INFO L93 Difference]: Finished difference Result 1442 states and 2253 transitions. [2022-01-11 06:23:54,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:23:54,665 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-11 06:23:54,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:54,668 INFO L225 Difference]: With dead ends: 1442 [2022-01-11 06:23:54,668 INFO L226 Difference]: Without dead ends: 965 [2022-01-11 06:23:54,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:54,670 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 190 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:23:54,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 407 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:54,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2022-01-11 06:23:54,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 732. [2022-01-11 06:23:54,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 732 states, 731 states have (on average 1.5677154582763337) internal successors, (1146), 731 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states 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 06:23:54,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 732 states to 732 states and 1146 transitions. [2022-01-11 06:23:54,728 INFO L78 Accepts]: Start accepts. Automaton has 732 states and 1146 transitions. Word has length 63 [2022-01-11 06:23:54,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:54,729 INFO L470 AbstractCegarLoop]: Abstraction has 732 states and 1146 transitions. [2022-01-11 06:23:54,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 06:23:54,729 INFO L276 IsEmpty]: Start isEmpty. Operand 732 states and 1146 transitions. [2022-01-11 06:23:54,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 06:23:54,730 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:54,730 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:23:54,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 06:23:54,730 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:54,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:54,730 INFO L85 PathProgramCache]: Analyzing trace with hash -2102514838, now seen corresponding path program 1 times [2022-01-11 06:23:54,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:54,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741413211] [2022-01-11 06:23:54,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:54,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:54,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:54,811 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 06:23:54,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:54,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741413211] [2022-01-11 06:23:54,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741413211] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:54,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:54,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:23:54,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161850575] [2022-01-11 06:23:54,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:54,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:23:54,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:54,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:23:54,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:23:54,813 INFO L87 Difference]: Start difference. First operand 732 states and 1146 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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 06:23:55,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:55,008 INFO L93 Difference]: Finished difference Result 2140 states and 3353 transitions. [2022-01-11 06:23:55,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:23:55,008 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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) Word has length 64 [2022-01-11 06:23:55,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:55,014 INFO L225 Difference]: With dead ends: 2140 [2022-01-11 06:23:55,014 INFO L226 Difference]: Without dead ends: 1438 [2022-01-11 06:23:55,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:23:55,017 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 365 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:23:55,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 551 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:55,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2022-01-11 06:23:55,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 741. [2022-01-11 06:23:55,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 1.5621621621621622) internal successors, (1156), 740 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states 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 06:23:55,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1156 transitions. [2022-01-11 06:23:55,096 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1156 transitions. Word has length 64 [2022-01-11 06:23:55,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:55,096 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 1156 transitions. [2022-01-11 06:23:55,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 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 06:23:55,096 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1156 transitions. [2022-01-11 06:23:55,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-11 06:23:55,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:55,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:23:55,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 06:23:55,098 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:55,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:55,098 INFO L85 PathProgramCache]: Analyzing trace with hash -171895733, now seen corresponding path program 1 times [2022-01-11 06:23:55,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:55,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710017356] [2022-01-11 06:23:55,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:55,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:55,225 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 06:23:55,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:55,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710017356] [2022-01-11 06:23:55,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710017356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:55,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:55,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:23:55,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652985177] [2022-01-11 06:23:55,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:55,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:23:55,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:55,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:23:55,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:55,227 INFO L87 Difference]: Start difference. First operand 741 states and 1156 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 06:23:57,256 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-11 06:23:57,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:57,538 INFO L93 Difference]: Finished difference Result 1841 states and 2969 transitions. [2022-01-11 06:23:57,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:23:57,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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) Word has length 64 [2022-01-11 06:23:57,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:57,544 INFO L225 Difference]: With dead ends: 1841 [2022-01-11 06:23:57,544 INFO L226 Difference]: Without dead ends: 1261 [2022-01-11 06:23:57,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:57,545 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 107 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-11 06:23:57,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 381 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-01-11 06:23:57,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2022-01-11 06:23:57,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1259. [2022-01-11 06:23:57,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 1258 states have (on average 1.589825119236884) internal successors, (2000), 1258 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states 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 06:23:57,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 2000 transitions. [2022-01-11 06:23:57,685 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 2000 transitions. Word has length 64 [2022-01-11 06:23:57,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:57,686 INFO L470 AbstractCegarLoop]: Abstraction has 1259 states and 2000 transitions. [2022-01-11 06:23:57,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 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 06:23:57,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 2000 transitions. [2022-01-11 06:23:57,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 06:23:57,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:57,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:23:57,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 06:23:57,688 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:57,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:57,688 INFO L85 PathProgramCache]: Analyzing trace with hash -481632190, now seen corresponding path program 1 times [2022-01-11 06:23:57,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:57,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057612213] [2022-01-11 06:23:57,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:57,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:57,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:57,801 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 06:23:57,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:57,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057612213] [2022-01-11 06:23:57,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057612213] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:57,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:57,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:23:57,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790811738] [2022-01-11 06:23:57,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:57,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:23:57,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:57,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:23:57,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:57,806 INFO L87 Difference]: Start difference. First operand 1259 states and 2000 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 06:23:58,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:58,052 INFO L93 Difference]: Finished difference Result 3447 states and 5556 transitions. [2022-01-11 06:23:58,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:23:58,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 06:23:58,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:58,060 INFO L225 Difference]: With dead ends: 3447 [2022-01-11 06:23:58,060 INFO L226 Difference]: Without dead ends: 2349 [2022-01-11 06:23:58,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:58,062 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 136 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:23:58,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 545 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:58,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2022-01-11 06:23:58,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2347. [2022-01-11 06:23:58,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2347 states, 2346 states have (on average 1.5839727195225917) internal successors, (3716), 2346 states have internal predecessors, (3716), 0 states have call successors, (0), 0 states 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 06:23:58,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2347 states to 2347 states and 3716 transitions. [2022-01-11 06:23:58,299 INFO L78 Accepts]: Start accepts. Automaton has 2347 states and 3716 transitions. Word has length 66 [2022-01-11 06:23:58,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:58,299 INFO L470 AbstractCegarLoop]: Abstraction has 2347 states and 3716 transitions. [2022-01-11 06:23:58,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 06:23:58,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2347 states and 3716 transitions. [2022-01-11 06:23:58,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 06:23:58,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:58,301 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:23:58,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 06:23:58,302 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:58,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:58,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1424708173, now seen corresponding path program 1 times [2022-01-11 06:23:58,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:58,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230548456] [2022-01-11 06:23:58,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:58,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:58,376 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 06:23:58,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:58,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230548456] [2022-01-11 06:23:58,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230548456] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:58,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:58,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:23:58,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673778602] [2022-01-11 06:23:58,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:58,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:23:58,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:58,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:23:58,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:58,378 INFO L87 Difference]: Start difference. First operand 2347 states and 3716 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 06:23:58,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:58,707 INFO L93 Difference]: Finished difference Result 4326 states and 6956 transitions. [2022-01-11 06:23:58,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:23:58,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 06:23:58,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:58,718 INFO L225 Difference]: With dead ends: 4326 [2022-01-11 06:23:58,718 INFO L226 Difference]: Without dead ends: 3213 [2022-01-11 06:23:58,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:23:58,721 INFO L933 BasicCegarLoop]: 269 mSDtfsCounter, 108 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:23:58,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 443 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:58,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2022-01-11 06:23:59,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 3211. [2022-01-11 06:23:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3211 states, 3210 states have (on average 1.5903426791277258) internal successors, (5105), 3210 states have internal predecessors, (5105), 0 states have call successors, (0), 0 states 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 06:23:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3211 states to 3211 states and 5105 transitions. [2022-01-11 06:23:59,013 INFO L78 Accepts]: Start accepts. Automaton has 3211 states and 5105 transitions. Word has length 66 [2022-01-11 06:23:59,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:23:59,013 INFO L470 AbstractCegarLoop]: Abstraction has 3211 states and 5105 transitions. [2022-01-11 06:23:59,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 06:23:59,014 INFO L276 IsEmpty]: Start isEmpty. Operand 3211 states and 5105 transitions. [2022-01-11 06:23:59,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-11 06:23:59,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:23:59,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:23:59,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 06:23:59,015 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:23:59,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:23:59,015 INFO L85 PathProgramCache]: Analyzing trace with hash 709957149, now seen corresponding path program 1 times [2022-01-11 06:23:59,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:23:59,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743668657] [2022-01-11 06:23:59,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:23:59,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:23:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:23:59,114 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 06:23:59,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:23:59,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743668657] [2022-01-11 06:23:59,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743668657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:23:59,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:23:59,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:23:59,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142724507] [2022-01-11 06:23:59,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:23:59,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:23:59,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:23:59,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:23:59,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:23:59,116 INFO L87 Difference]: Start difference. First operand 3211 states and 5105 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 06:23:59,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:23:59,727 INFO L93 Difference]: Finished difference Result 9321 states and 14854 transitions. [2022-01-11 06:23:59,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:23:59,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 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 06:23:59,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:23:59,747 INFO L225 Difference]: With dead ends: 9321 [2022-01-11 06:23:59,747 INFO L226 Difference]: Without dead ends: 6178 [2022-01-11 06:23:59,754 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 06:23:59,755 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 395 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:23:59,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 468 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:23:59,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6178 states. [2022-01-11 06:24:00,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6178 to 6176. [2022-01-11 06:24:00,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6176 states, 6175 states have (on average 1.5860728744939272) internal successors, (9794), 6175 states have internal predecessors, (9794), 0 states have call successors, (0), 0 states 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 06:24:00,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6176 states to 6176 states and 9794 transitions. [2022-01-11 06:24:00,425 INFO L78 Accepts]: Start accepts. Automaton has 6176 states and 9794 transitions. Word has length 66 [2022-01-11 06:24:00,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:24:00,425 INFO L470 AbstractCegarLoop]: Abstraction has 6176 states and 9794 transitions. [2022-01-11 06:24:00,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states 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 06:24:00,425 INFO L276 IsEmpty]: Start isEmpty. Operand 6176 states and 9794 transitions. [2022-01-11 06:24:00,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 06:24:00,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:24:00,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:24:00,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 06:24:00,427 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:24:00,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:24:00,427 INFO L85 PathProgramCache]: Analyzing trace with hash 2012846176, now seen corresponding path program 1 times [2022-01-11 06:24:00,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:24:00,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488377355] [2022-01-11 06:24:00,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:24:00,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:24:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:24:00,489 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 06:24:00,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:24:00,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488377355] [2022-01-11 06:24:00,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488377355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:24:00,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:24:00,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:24:00,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468127188] [2022-01-11 06:24:00,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:24:00,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:24:00,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:24:00,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:24:00,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:24:00,491 INFO L87 Difference]: Start difference. First operand 6176 states and 9794 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 06:24:00,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:24:00,949 INFO L93 Difference]: Finished difference Result 9155 states and 14558 transitions. [2022-01-11 06:24:00,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:24:00,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 68 [2022-01-11 06:24:00,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:24:00,967 INFO L225 Difference]: With dead ends: 9155 [2022-01-11 06:24:00,968 INFO L226 Difference]: Without dead ends: 5185 [2022-01-11 06:24:00,974 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 06:24:00,975 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 47 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:24:00,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 627 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:24:00,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5185 states. [2022-01-11 06:24:01,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5185 to 5185. [2022-01-11 06:24:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5185 states, 5184 states have (on average 1.5831404320987654) internal successors, (8207), 5184 states have internal predecessors, (8207), 0 states have call successors, (0), 0 states 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 06:24:01,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5185 states to 5185 states and 8207 transitions. [2022-01-11 06:24:01,535 INFO L78 Accepts]: Start accepts. Automaton has 5185 states and 8207 transitions. Word has length 68 [2022-01-11 06:24:01,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:24:01,535 INFO L470 AbstractCegarLoop]: Abstraction has 5185 states and 8207 transitions. [2022-01-11 06:24:01,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 06:24:01,536 INFO L276 IsEmpty]: Start isEmpty. Operand 5185 states and 8207 transitions. [2022-01-11 06:24:01,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 06:24:01,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:24:01,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:24:01,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 06:24:01,537 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:24:01,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:24:01,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1537664968, now seen corresponding path program 1 times [2022-01-11 06:24:01,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:24:01,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116716697] [2022-01-11 06:24:01,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:24:01,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:24:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:24:01,670 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 06:24:01,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:24:01,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116716697] [2022-01-11 06:24:01,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116716697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:24:01,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:24:01,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:24:01,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747692365] [2022-01-11 06:24:01,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:24:01,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:24:01,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:24:01,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:24:01,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:24:01,672 INFO L87 Difference]: Start difference. First operand 5185 states and 8207 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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 06:24:02,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:24:02,567 INFO L93 Difference]: Finished difference Result 13589 states and 21450 transitions. [2022-01-11 06:24:02,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:24:02,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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 68 [2022-01-11 06:24:02,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:24:02,592 INFO L225 Difference]: With dead ends: 13589 [2022-01-11 06:24:02,592 INFO L226 Difference]: Without dead ends: 8448 [2022-01-11 06:24:02,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:24:02,601 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 513 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:24:02,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 813 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:24:02,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8448 states. [2022-01-11 06:24:03,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8448 to 5327. [2022-01-11 06:24:03,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5327 states, 5326 states have (on average 1.5715358618099888) internal successors, (8370), 5326 states have internal predecessors, (8370), 0 states have call successors, (0), 0 states 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 06:24:03,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5327 states to 5327 states and 8370 transitions. [2022-01-11 06:24:03,132 INFO L78 Accepts]: Start accepts. Automaton has 5327 states and 8370 transitions. Word has length 68 [2022-01-11 06:24:03,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:24:03,133 INFO L470 AbstractCegarLoop]: Abstraction has 5327 states and 8370 transitions. [2022-01-11 06:24:03,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 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 06:24:03,133 INFO L276 IsEmpty]: Start isEmpty. Operand 5327 states and 8370 transitions. [2022-01-11 06:24:03,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 06:24:03,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:24:03,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:24:03,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 06:24:03,135 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:24:03,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:24:03,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1845262692, now seen corresponding path program 1 times [2022-01-11 06:24:03,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:24:03,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710014405] [2022-01-11 06:24:03,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:24:03,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:24:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:24:03,192 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 06:24:03,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:24:03,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710014405] [2022-01-11 06:24:03,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710014405] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:24:03,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:24:03,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:24:03,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126400596] [2022-01-11 06:24:03,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:24:03,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:24:03,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:24:03,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:24:03,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:24:03,194 INFO L87 Difference]: Start difference. First operand 5327 states and 8370 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 06:24:03,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:24:03,617 INFO L93 Difference]: Finished difference Result 9612 states and 15082 transitions. [2022-01-11 06:24:03,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:24:03,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 68 [2022-01-11 06:24:03,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:24:03,625 INFO L225 Difference]: With dead ends: 9612 [2022-01-11 06:24:03,625 INFO L226 Difference]: Without dead ends: 4321 [2022-01-11 06:24:03,633 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 06:24:03,634 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 47 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:24:03,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 623 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:24:03,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4321 states. [2022-01-11 06:24:04,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4321 to 4321. [2022-01-11 06:24:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4321 states, 4320 states have (on average 1.5650462962962963) internal successors, (6761), 4320 states have internal predecessors, (6761), 0 states have call successors, (0), 0 states 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 06:24:04,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 6761 transitions. [2022-01-11 06:24:04,098 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 6761 transitions. Word has length 68 [2022-01-11 06:24:04,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:24:04,099 INFO L470 AbstractCegarLoop]: Abstraction has 4321 states and 6761 transitions. [2022-01-11 06:24:04,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 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 06:24:04,099 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 6761 transitions. [2022-01-11 06:24:04,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-11 06:24:04,101 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:24:04,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:24:04,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 06:24:04,101 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:24:04,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:24:04,102 INFO L85 PathProgramCache]: Analyzing trace with hash 700676502, now seen corresponding path program 1 times [2022-01-11 06:24:04,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:24:04,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411061981] [2022-01-11 06:24:04,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:24:04,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:24:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:24:04,145 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 06:24:04,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:24:04,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411061981] [2022-01-11 06:24:04,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411061981] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:24:04,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:24:04,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:24:04,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111015121] [2022-01-11 06:24:04,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:24:04,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:24:04,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:24:04,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:24:04,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:24:04,148 INFO L87 Difference]: Start difference. First operand 4321 states and 6761 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:24:04,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:24:04,866 INFO L93 Difference]: Finished difference Result 8578 states and 13440 transitions. [2022-01-11 06:24:04,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:24:04,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-01-11 06:24:04,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:24:04,878 INFO L225 Difference]: With dead ends: 8578 [2022-01-11 06:24:04,878 INFO L226 Difference]: Without dead ends: 5965 [2022-01-11 06:24:04,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:24:04,884 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 176 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:24:04,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 483 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:24:04,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5965 states. [2022-01-11 06:24:05,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5965 to 4321. [2022-01-11 06:24:05,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4321 states, 4320 states have (on average 1.5643518518518518) internal successors, (6758), 4320 states have internal predecessors, (6758), 0 states have call successors, (0), 0 states 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 06:24:05,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 6758 transitions. [2022-01-11 06:24:05,322 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 6758 transitions. Word has length 70 [2022-01-11 06:24:05,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:24:05,322 INFO L470 AbstractCegarLoop]: Abstraction has 4321 states and 6758 transitions. [2022-01-11 06:24:05,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:24:05,322 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 6758 transitions. [2022-01-11 06:24:05,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-11 06:24:05,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:24:05,323 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:24:05,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 06:24:05,324 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:24:05,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:24:05,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1818284684, now seen corresponding path program 1 times [2022-01-11 06:24:05,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:24:05,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333554390] [2022-01-11 06:24:05,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:24:05,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:24:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:24:05,451 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 06:24:05,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:24:05,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333554390] [2022-01-11 06:24:05,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333554390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:24:05,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:24:05,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:24:05,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994999654] [2022-01-11 06:24:05,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:24:05,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:24:05,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:24:05,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:24:05,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:24:05,453 INFO L87 Difference]: Start difference. First operand 4321 states and 6758 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:24:06,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:24:06,393 INFO L93 Difference]: Finished difference Result 11621 states and 18496 transitions. [2022-01-11 06:24:06,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:24:06,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-11 06:24:06,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:24:06,409 INFO L225 Difference]: With dead ends: 11621 [2022-01-11 06:24:06,409 INFO L226 Difference]: Without dead ends: 7737 [2022-01-11 06:24:06,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:24:06,415 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 99 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:24:06,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 375 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:24:06,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7737 states. [2022-01-11 06:24:07,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7737 to 7735. [2022-01-11 06:24:07,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7735 states, 7734 states have (on average 1.5743470390483578) internal successors, (12176), 7734 states have internal predecessors, (12176), 0 states have call successors, (0), 0 states 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 06:24:07,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7735 states to 7735 states and 12176 transitions. [2022-01-11 06:24:07,322 INFO L78 Accepts]: Start accepts. Automaton has 7735 states and 12176 transitions. Word has length 71 [2022-01-11 06:24:07,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:24:07,322 INFO L470 AbstractCegarLoop]: Abstraction has 7735 states and 12176 transitions. [2022-01-11 06:24:07,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:24:07,323 INFO L276 IsEmpty]: Start isEmpty. Operand 7735 states and 12176 transitions. [2022-01-11 06:24:07,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 06:24:07,324 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:24:07,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:24:07,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 06:24:07,324 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:24:07,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:24:07,325 INFO L85 PathProgramCache]: Analyzing trace with hash -2091560203, now seen corresponding path program 1 times [2022-01-11 06:24:07,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:24:07,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029018185] [2022-01-11 06:24:07,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:24:07,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:24:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:24:07,392 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 06:24:07,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:24:07,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029018185] [2022-01-11 06:24:07,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029018185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:24:07,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:24:07,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:24:07,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453708932] [2022-01-11 06:24:07,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:24:07,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:24:07,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:24:07,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:24:07,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:24:07,394 INFO L87 Difference]: Start difference. First operand 7735 states and 12176 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:24:08,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:24:08,898 INFO L93 Difference]: Finished difference Result 19407 states and 30766 transitions. [2022-01-11 06:24:08,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:24:08,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-11 06:24:08,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:24:08,924 INFO L225 Difference]: With dead ends: 19407 [2022-01-11 06:24:08,924 INFO L226 Difference]: Without dead ends: 12109 [2022-01-11 06:24:08,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:24:08,936 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 121 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:24:08,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 513 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:24:08,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12109 states. [2022-01-11 06:24:10,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12109 to 12107. [2022-01-11 06:24:10,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12107 states, 12106 states have (on average 1.5618701470345284) internal successors, (18908), 12106 states have internal predecessors, (18908), 0 states have call successors, (0), 0 states 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 06:24:10,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12107 states to 12107 states and 18908 transitions. [2022-01-11 06:24:10,392 INFO L78 Accepts]: Start accepts. Automaton has 12107 states and 18908 transitions. Word has length 73 [2022-01-11 06:24:10,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:24:10,392 INFO L470 AbstractCegarLoop]: Abstraction has 12107 states and 18908 transitions. [2022-01-11 06:24:10,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:24:10,392 INFO L276 IsEmpty]: Start isEmpty. Operand 12107 states and 18908 transitions. [2022-01-11 06:24:10,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-11 06:24:10,394 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:24:10,394 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:24:10,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 06:24:10,394 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:24:10,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:24:10,395 INFO L85 PathProgramCache]: Analyzing trace with hash 694855157, now seen corresponding path program 1 times [2022-01-11 06:24:10,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:24:10,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049679483] [2022-01-11 06:24:10,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:24:10,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:24:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:24:10,474 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 06:24:10,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:24:10,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049679483] [2022-01-11 06:24:10,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049679483] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:24:10,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:24:10,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:24:10,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97373579] [2022-01-11 06:24:10,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:24:10,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:24:10,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:24:10,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:24:10,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:24:10,477 INFO L87 Difference]: Start difference. First operand 12107 states and 18908 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:24:12,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:24:12,736 INFO L93 Difference]: Finished difference Result 30416 states and 47764 transitions. [2022-01-11 06:24:12,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:24:12,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-11 06:24:12,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:24:12,768 INFO L225 Difference]: With dead ends: 30416 [2022-01-11 06:24:12,769 INFO L226 Difference]: Without dead ends: 18882 [2022-01-11 06:24:12,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:24:12,787 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 124 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:24:12,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 536 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:24:12,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18882 states. [2022-01-11 06:24:15,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18882 to 18880. [2022-01-11 06:24:15,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18880 states, 18879 states have (on average 1.5470628740929075) internal successors, (29207), 18879 states have internal predecessors, (29207), 0 states have call successors, (0), 0 states 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 06:24:15,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18880 states to 18880 states and 29207 transitions. [2022-01-11 06:24:15,120 INFO L78 Accepts]: Start accepts. Automaton has 18880 states and 29207 transitions. Word has length 73 [2022-01-11 06:24:15,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:24:15,120 INFO L470 AbstractCegarLoop]: Abstraction has 18880 states and 29207 transitions. [2022-01-11 06:24:15,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:24:15,120 INFO L276 IsEmpty]: Start isEmpty. Operand 18880 states and 29207 transitions. [2022-01-11 06:24:15,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-11 06:24:15,122 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:24:15,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:24:15,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 06:24:15,123 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:24:15,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:24:15,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1392465622, now seen corresponding path program 1 times [2022-01-11 06:24:15,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:24:15,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703830335] [2022-01-11 06:24:15,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:24:15,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:24:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:24:15,205 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 06:24:15,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:24:15,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703830335] [2022-01-11 06:24:15,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703830335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:24:15,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:24:15,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:24:15,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478221822] [2022-01-11 06:24:15,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:24:15,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:24:15,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:24:15,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:24:15,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:24:15,207 INFO L87 Difference]: Start difference. First operand 18880 states and 29207 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:24:17,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:24:17,887 INFO L93 Difference]: Finished difference Result 38876 states and 60123 transitions. [2022-01-11 06:24:17,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:24:17,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-11 06:24:17,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:24:17,922 INFO L225 Difference]: With dead ends: 38876 [2022-01-11 06:24:17,922 INFO L226 Difference]: Without dead ends: 20149 [2022-01-11 06:24:17,945 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 06:24:17,945 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 443 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:24:17,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [443 Valid, 372 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:24:17,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20149 states. [2022-01-11 06:24:20,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20149 to 18939. [2022-01-11 06:24:20,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18939 states, 18938 states have (on average 1.5452001267293274) internal successors, (29263), 18938 states have internal predecessors, (29263), 0 states have call successors, (0), 0 states 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 06:24:20,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18939 states to 18939 states and 29263 transitions. [2022-01-11 06:24:20,414 INFO L78 Accepts]: Start accepts. Automaton has 18939 states and 29263 transitions. Word has length 74 [2022-01-11 06:24:20,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:24:20,414 INFO L470 AbstractCegarLoop]: Abstraction has 18939 states and 29263 transitions. [2022-01-11 06:24:20,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:24:20,415 INFO L276 IsEmpty]: Start isEmpty. Operand 18939 states and 29263 transitions. [2022-01-11 06:24:20,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-11 06:24:20,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:24:20,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:24:20,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 06:24:20,417 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:24:20,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:24:20,418 INFO L85 PathProgramCache]: Analyzing trace with hash -683741993, now seen corresponding path program 1 times [2022-01-11 06:24:20,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:24:20,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245162823] [2022-01-11 06:24:20,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:24:20,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:24:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:24:20,493 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 06:24:20,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:24:20,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245162823] [2022-01-11 06:24:20,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245162823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:24:20,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:24:20,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:24:20,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821089914] [2022-01-11 06:24:20,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:24:20,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:24:20,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:24:20,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:24:20,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:24:20,494 INFO L87 Difference]: Start difference. First operand 18939 states and 29263 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:24:23,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:24:23,643 INFO L93 Difference]: Finished difference Result 35574 states and 55585 transitions. [2022-01-11 06:24:23,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:24:23,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-11 06:24:23,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:24:23,680 INFO L225 Difference]: With dead ends: 35574 [2022-01-11 06:24:23,680 INFO L226 Difference]: Without dead ends: 25900 [2022-01-11 06:24:23,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:24:23,692 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 100 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:24:23,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 424 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:24:23,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25900 states. [2022-01-11 06:24:26,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25900 to 25898. [2022-01-11 06:24:26,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25898 states, 25897 states have (on average 1.5492528092056994) internal successors, (40121), 25897 states have internal predecessors, (40121), 0 states have call successors, (0), 0 states 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 06:24:26,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25898 states to 25898 states and 40121 transitions. [2022-01-11 06:24:26,925 INFO L78 Accepts]: Start accepts. Automaton has 25898 states and 40121 transitions. Word has length 74 [2022-01-11 06:24:26,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:24:26,926 INFO L470 AbstractCegarLoop]: Abstraction has 25898 states and 40121 transitions. [2022-01-11 06:24:26,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:24:26,926 INFO L276 IsEmpty]: Start isEmpty. Operand 25898 states and 40121 transitions. [2022-01-11 06:24:26,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-11 06:24:26,928 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:24:26,928 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:24:26,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 06:24:26,928 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:24:26,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:24:26,929 INFO L85 PathProgramCache]: Analyzing trace with hash -2016272890, now seen corresponding path program 1 times [2022-01-11 06:24:26,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:24:26,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662209011] [2022-01-11 06:24:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:24:26,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:24:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:24:26,998 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 06:24:26,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:24:26,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662209011] [2022-01-11 06:24:26,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662209011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:24:26,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:24:26,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 06:24:26,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744764962] [2022-01-11 06:24:26,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:24:26,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 06:24:26,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:24:26,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 06:24:26,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:24:26,999 INFO L87 Difference]: Start difference. First operand 25898 states and 40121 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 06:24:33,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:24:33,290 INFO L93 Difference]: Finished difference Result 70948 states and 110136 transitions. [2022-01-11 06:24:33,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 06:24:33,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-01-11 06:24:33,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:24:33,395 INFO L225 Difference]: With dead ends: 70948 [2022-01-11 06:24:33,395 INFO L226 Difference]: Without dead ends: 51593 [2022-01-11 06:24:33,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 06:24:33,420 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 165 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:24:33,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 545 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:24:33,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51593 states. [2022-01-11 06:24:37,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51593 to 25908. [2022-01-11 06:24:37,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25908 states, 25907 states have (on average 1.5490407997838422) internal successors, (40131), 25907 states have internal predecessors, (40131), 0 states have call successors, (0), 0 states 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 06:24:37,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25908 states to 25908 states and 40131 transitions. [2022-01-11 06:24:37,260 INFO L78 Accepts]: Start accepts. Automaton has 25908 states and 40131 transitions. Word has length 75 [2022-01-11 06:24:37,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:24:37,261 INFO L470 AbstractCegarLoop]: Abstraction has 25908 states and 40131 transitions. [2022-01-11 06:24:37,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 06:24:37,261 INFO L276 IsEmpty]: Start isEmpty. Operand 25908 states and 40131 transitions. [2022-01-11 06:24:37,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 06:24:37,263 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:24:37,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:24:37,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 06:24:37,263 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:24:37,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:24:37,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1024163023, now seen corresponding path program 1 times [2022-01-11 06:24:37,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:24:37,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15492992] [2022-01-11 06:24:37,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:24:37,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:24:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:24:37,455 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 06:24:37,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:24:37,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15492992] [2022-01-11 06:24:37,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15492992] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:24:37,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:24:37,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:24:37,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919749446] [2022-01-11 06:24:37,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:24:37,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:24:37,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:24:37,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:24:37,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:24:37,457 INFO L87 Difference]: Start difference. First operand 25908 states and 40131 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:24:43,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:24:43,459 INFO L93 Difference]: Finished difference Result 66861 states and 103493 transitions. [2022-01-11 06:24:43,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 06:24:43,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 06:24:43,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:24:43,529 INFO L225 Difference]: With dead ends: 66861 [2022-01-11 06:24:43,529 INFO L226 Difference]: Without dead ends: 42441 [2022-01-11 06:24:43,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-11 06:24:43,552 INFO L933 BasicCegarLoop]: 308 mSDtfsCounter, 568 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:24:43,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 822 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:24:43,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42441 states. [2022-01-11 06:24:47,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42441 to 26129. [2022-01-11 06:24:47,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26129 states, 26128 states have (on average 1.5449709124311084) internal successors, (40367), 26128 states have internal predecessors, (40367), 0 states have call successors, (0), 0 states 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 06:24:47,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26129 states to 26129 states and 40367 transitions. [2022-01-11 06:24:47,531 INFO L78 Accepts]: Start accepts. Automaton has 26129 states and 40367 transitions. Word has length 76 [2022-01-11 06:24:47,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:24:47,531 INFO L470 AbstractCegarLoop]: Abstraction has 26129 states and 40367 transitions. [2022-01-11 06:24:47,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:24:47,531 INFO L276 IsEmpty]: Start isEmpty. Operand 26129 states and 40367 transitions. [2022-01-11 06:24:47,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-11 06:24:47,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:24:47,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:24:47,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 06:24:47,542 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:24:47,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:24:47,542 INFO L85 PathProgramCache]: Analyzing trace with hash -549904491, now seen corresponding path program 1 times [2022-01-11 06:24:47,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:24:47,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771969693] [2022-01-11 06:24:47,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:24:47,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:24:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:24:47,602 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 06:24:47,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:24:47,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771969693] [2022-01-11 06:24:47,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771969693] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:24:47,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:24:47,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 06:24:47,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276010110] [2022-01-11 06:24:47,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:24:47,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 06:24:47,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:24:47,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 06:24:47,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 06:24:47,603 INFO L87 Difference]: Start difference. First operand 26129 states and 40367 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:24:50,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 06:24:50,954 INFO L93 Difference]: Finished difference Result 42353 states and 65436 transitions. [2022-01-11 06:24:50,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 06:24:50,954 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-11 06:24:50,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 06:24:50,985 INFO L225 Difference]: With dead ends: 42353 [2022-01-11 06:24:50,985 INFO L226 Difference]: Without dead ends: 22603 [2022-01-11 06:24:50,998 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 06:24:50,998 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 23 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 06:24:50,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 596 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 06:24:51,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22603 states. [2022-01-11 06:24:54,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22603 to 22603. [2022-01-11 06:24:54,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22603 states, 22602 states have (on average 1.54176621537917) internal successors, (34847), 22602 states have internal predecessors, (34847), 0 states have call successors, (0), 0 states 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 06:24:54,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22603 states to 22603 states and 34847 transitions. [2022-01-11 06:24:54,155 INFO L78 Accepts]: Start accepts. Automaton has 22603 states and 34847 transitions. Word has length 76 [2022-01-11 06:24:54,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 06:24:54,155 INFO L470 AbstractCegarLoop]: Abstraction has 22603 states and 34847 transitions. [2022-01-11 06:24:54,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 06:24:54,155 INFO L276 IsEmpty]: Start isEmpty. Operand 22603 states and 34847 transitions. [2022-01-11 06:24:54,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 06:24:54,157 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 06:24:54,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 06:24:54,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 06:24:54,157 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 06:24:54,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 06:24:54,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1135680122, now seen corresponding path program 1 times [2022-01-11 06:24:54,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 06:24:54,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458993721] [2022-01-11 06:24:54,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 06:24:54,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 06:24:54,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 06:24:54,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 06:24:54,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 06:24:54,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458993721] [2022-01-11 06:24:54,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458993721] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 06:24:54,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 06:24:54,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 06:24:54,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2459741] [2022-01-11 06:24:54,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 06:24:54,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 06:24:54,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 06:24:54,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 06:24:54,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 06:24:54,324 INFO L87 Difference]: Start difference. First operand 22603 states and 34847 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)