./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label47.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label47.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b006d8e4231a58992706b525e43e67dd3e0df162d0a378f0ac12d9a99bfe781 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 12:50:16,707 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 12:50:16,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 12:50:16,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 12:50:16,754 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 12:50:16,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 12:50:16,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 12:50:16,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 12:50:16,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 12:50:16,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 12:50:16,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 12:50:16,768 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 12:50:16,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 12:50:16,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 12:50:16,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 12:50:16,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 12:50:16,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 12:50:16,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 12:50:16,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 12:50:16,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 12:50:16,784 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 12:50:16,785 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 12:50:16,786 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 12:50:16,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 12:50:16,788 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 12:50:16,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 12:50:16,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 12:50:16,793 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 12:50:16,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 12:50:16,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 12:50:16,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 12:50:16,796 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 12:50:16,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 12:50:16,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 12:50:16,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 12:50:16,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 12:50:16,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 12:50:16,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 12:50:16,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 12:50:16,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 12:50:16,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 12:50:16,804 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 12:50:16,805 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 12:50:16,843 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 12:50:16,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 12:50:16,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 12:50:16,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 12:50:16,845 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 12:50:16,845 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 12:50:16,845 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 12:50:16,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 12:50:16,846 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 12:50:16,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 12:50:16,847 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 12:50:16,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 12:50:16,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 12:50:16,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 12:50:16,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 12:50:16,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 12:50:16,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 12:50:16,848 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 12:50:16,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 12:50:16,850 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 12:50:16,850 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 12:50:16,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 12:50:16,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 12:50:16,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 12:50:16,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 12:50:16,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 12:50:16,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 12:50:16,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 12:50:16,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 12:50:16,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 12:50:16,852 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 12:50:16,852 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 12:50:16,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 12:50:16,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b006d8e4231a58992706b525e43e67dd3e0df162d0a378f0ac12d9a99bfe781 [2022-07-13 12:50:17,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 12:50:17,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 12:50:17,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 12:50:17,125 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 12:50:17,126 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 12:50:17,127 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label47.c [2022-07-13 12:50:17,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41b1e6b1b/3b341f8f4f47402eae3d57006226129a/FLAG89c33402a [2022-07-13 12:50:17,787 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 12:50:17,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label47.c [2022-07-13 12:50:17,820 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41b1e6b1b/3b341f8f4f47402eae3d57006226129a/FLAG89c33402a [2022-07-13 12:50:18,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41b1e6b1b/3b341f8f4f47402eae3d57006226129a [2022-07-13 12:50:18,201 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 12:50:18,202 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 12:50:18,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 12:50:18,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 12:50:18,209 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 12:50:18,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 12:50:18" (1/1) ... [2022-07-13 12:50:18,210 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@226693a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:50:18, skipping insertion in model container [2022-07-13 12:50:18,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 12:50:18" (1/1) ... [2022-07-13 12:50:18,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 12:50:18,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 12:50:18,618 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label47.c[4902,4915] [2022-07-13 12:50:19,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 12:50:19,259 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 12:50:19,286 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label47.c[4902,4915] [2022-07-13 12:50:19,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 12:50:19,720 INFO L208 MainTranslator]: Completed translation [2022-07-13 12:50:19,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:50:19 WrapperNode [2022-07-13 12:50:19,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 12:50:19,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 12:50:19,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 12:50:19,723 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 12:50:19,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:50:19" (1/1) ... [2022-07-13 12:50:19,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:50:19" (1/1) ... [2022-07-13 12:50:20,092 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-07-13 12:50:20,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 12:50:20,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 12:50:20,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 12:50:20,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 12:50:20,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:50:19" (1/1) ... [2022-07-13 12:50:20,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:50:19" (1/1) ... [2022-07-13 12:50:20,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:50:19" (1/1) ... [2022-07-13 12:50:20,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:50:19" (1/1) ... [2022-07-13 12:50:20,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:50:19" (1/1) ... [2022-07-13 12:50:20,369 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:50:19" (1/1) ... [2022-07-13 12:50:20,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:50:19" (1/1) ... [2022-07-13 12:50:20,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 12:50:20,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 12:50:20,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 12:50:20,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 12:50:20,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:50:19" (1/1) ... [2022-07-13 12:50:20,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 12:50:20,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 12:50:20,657 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) [2022-07-13 12:50:20,723 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 [2022-07-13 12:50:20,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 12:50:20,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 12:50:20,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 12:50:20,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 12:50:20,886 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 12:50:20,900 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 12:50:24,233 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 12:50:24,253 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 12:50:24,253 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 12:50:24,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 12:50:24 BoogieIcfgContainer [2022-07-13 12:50:24,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 12:50:24,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 12:50:24,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 12:50:24,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 12:50:24,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 12:50:18" (1/3) ... [2022-07-13 12:50:24,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a3b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 12:50:24, skipping insertion in model container [2022-07-13 12:50:24,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 12:50:19" (2/3) ... [2022-07-13 12:50:24,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a3b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 12:50:24, skipping insertion in model container [2022-07-13 12:50:24,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 12:50:24" (3/3) ... [2022-07-13 12:50:24,266 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label47.c [2022-07-13 12:50:24,281 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 12:50:24,281 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 12:50:24,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 12:50:24,371 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@723cb495, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7ac0578 [2022-07-13 12:50:24,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 12:50:24,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:24,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-13 12:50:24,393 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:50:24,394 INFO L195 NwaCegarLoop]: 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] [2022-07-13 12:50:24,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:50:24,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:50:24,399 INFO L85 PathProgramCache]: Analyzing trace with hash 323974986, now seen corresponding path program 1 times [2022-07-13 12:50:24,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:50:24,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838978045] [2022-07-13 12:50:24,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:50:24,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:50:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:50:24,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:50:24,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:50:24,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838978045] [2022-07-13 12:50:24,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838978045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:50:24,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:50:24,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:50:24,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319785407] [2022-07-13 12:50:24,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:50:24,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:50:24,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:50:24,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:50:24,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:50:24,705 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 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 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:28,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:50:28,179 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2022-07-13 12:50:28,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:50:28,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2022-07-13 12:50:28,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:50:28,215 INFO L225 Difference]: With dead ends: 2388 [2022-07-13 12:50:28,216 INFO L226 Difference]: Without dead ends: 1506 [2022-07-13 12:50:28,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:50:28,229 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 798 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 764 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 798 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 3264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 764 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-13 12:50:28,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [798 Valid, 112 Invalid, 3264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [764 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-13 12:50:28,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-07-13 12:50:28,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-07-13 12:50:28,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.86578073089701) internal successors, (2808), 1505 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:28,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2808 transitions. [2022-07-13 12:50:28,349 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2808 transitions. Word has length 38 [2022-07-13 12:50:28,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:50:28,350 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2808 transitions. [2022-07-13 12:50:28,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:28,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2808 transitions. [2022-07-13 12:50:28,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 12:50:28,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:50:28,356 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:50:28,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 12:50:28,356 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:50:28,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:50:28,357 INFO L85 PathProgramCache]: Analyzing trace with hash 533491976, now seen corresponding path program 1 times [2022-07-13 12:50:28,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:50:28,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923822314] [2022-07-13 12:50:28,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:50:28,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:50:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:50:28,548 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 12:50:28,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:50:28,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923822314] [2022-07-13 12:50:28,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923822314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:50:28,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:50:28,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:50:28,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846102342] [2022-07-13 12:50:28,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:50:28,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 12:50:28,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:50:28,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 12:50:28,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 12:50:28,552 INFO L87 Difference]: Start difference. First operand 1506 states and 2808 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:33,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:50:33,696 INFO L93 Difference]: Finished difference Result 5271 states and 9796 transitions. [2022-07-13 12:50:33,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 12:50:33,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-07-13 12:50:33,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:50:33,714 INFO L225 Difference]: With dead ends: 5271 [2022-07-13 12:50:33,714 INFO L226 Difference]: Without dead ends: 3767 [2022-07-13 12:50:33,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 12:50:33,721 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 2305 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3612 mSolverCounterSat, 1534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 5146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1534 IncrementalHoareTripleChecker+Valid, 3612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-07-13 12:50:33,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2305 Valid, 199 Invalid, 5146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1534 Valid, 3612 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-07-13 12:50:33,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2022-07-13 12:50:33,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3759. [2022-07-13 12:50:33,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3759 states, 3758 states have (on average 1.6053751995742416) internal successors, (6033), 3758 states have internal predecessors, (6033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:33,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3759 states to 3759 states and 6033 transitions. [2022-07-13 12:50:33,807 INFO L78 Accepts]: Start accepts. Automaton has 3759 states and 6033 transitions. Word has length 103 [2022-07-13 12:50:33,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:50:33,808 INFO L495 AbstractCegarLoop]: Abstraction has 3759 states and 6033 transitions. [2022-07-13 12:50:33,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:33,808 INFO L276 IsEmpty]: Start isEmpty. Operand 3759 states and 6033 transitions. [2022-07-13 12:50:33,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-13 12:50:33,821 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:50:33,821 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:50:33,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 12:50:33,824 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:50:33,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:50:33,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1641572268, now seen corresponding path program 1 times [2022-07-13 12:50:33,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:50:33,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418028557] [2022-07-13 12:50:33,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:50:33,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:50:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:50:34,022 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 12:50:34,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:50:34,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418028557] [2022-07-13 12:50:34,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418028557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:50:34,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:50:34,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:50:34,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909455011] [2022-07-13 12:50:34,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:50:34,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 12:50:34,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:50:34,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 12:50:34,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 12:50:34,027 INFO L87 Difference]: Start difference. First operand 3759 states and 6033 transitions. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:37,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:50:37,778 INFO L93 Difference]: Finished difference Result 10559 states and 17375 transitions. [2022-07-13 12:50:37,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 12:50:37,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 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 199 [2022-07-13 12:50:37,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:50:37,810 INFO L225 Difference]: With dead ends: 10559 [2022-07-13 12:50:37,810 INFO L226 Difference]: Without dead ends: 6765 [2022-07-13 12:50:37,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 12:50:37,818 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 692 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 3806 mSolverCounterSat, 663 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 4469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 3806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-13 12:50:37,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 714 Invalid, 4469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [663 Valid, 3806 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-13 12:50:37,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6765 states. [2022-07-13 12:50:37,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6765 to 6763. [2022-07-13 12:50:37,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6763 states, 6762 states have (on average 1.3571428571428572) internal successors, (9177), 6762 states have internal predecessors, (9177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:37,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6763 states to 6763 states and 9177 transitions. [2022-07-13 12:50:37,954 INFO L78 Accepts]: Start accepts. Automaton has 6763 states and 9177 transitions. Word has length 199 [2022-07-13 12:50:37,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:50:37,955 INFO L495 AbstractCegarLoop]: Abstraction has 6763 states and 9177 transitions. [2022-07-13 12:50:37,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 3 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:37,955 INFO L276 IsEmpty]: Start isEmpty. Operand 6763 states and 9177 transitions. [2022-07-13 12:50:37,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-07-13 12:50:37,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:50:37,959 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:50:37,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 12:50:37,960 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:50:37,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:50:37,960 INFO L85 PathProgramCache]: Analyzing trace with hash -159919323, now seen corresponding path program 1 times [2022-07-13 12:50:37,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:50:37,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240478502] [2022-07-13 12:50:37,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:50:37,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:50:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:50:38,181 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-13 12:50:38,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:50:38,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240478502] [2022-07-13 12:50:38,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240478502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:50:38,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:50:38,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:50:38,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85018601] [2022-07-13 12:50:38,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:50:38,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:50:38,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:50:38,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:50:38,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:50:38,184 INFO L87 Difference]: Start difference. First operand 6763 states and 9177 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:40,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:50:40,748 INFO L93 Difference]: Finished difference Result 16530 states and 23478 transitions. [2022-07-13 12:50:40,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:50:40,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 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 269 [2022-07-13 12:50:40,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:50:40,791 INFO L225 Difference]: With dead ends: 16530 [2022-07-13 12:50:40,791 INFO L226 Difference]: Without dead ends: 9769 [2022-07-13 12:50:40,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:50:40,809 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2343 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 2809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 12:50:40,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 390 Invalid, 2809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2343 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 12:50:40,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9769 states. [2022-07-13 12:50:40,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9769 to 9767. [2022-07-13 12:50:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.3653491705918492) internal successors, (13334), 9766 states have internal predecessors, (13334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:40,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 13334 transitions. [2022-07-13 12:50:40,995 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 13334 transitions. Word has length 269 [2022-07-13 12:50:40,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:50:40,997 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 13334 transitions. [2022-07-13 12:50:40,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:40,997 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 13334 transitions. [2022-07-13 12:50:41,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-07-13 12:50:41,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:50:41,003 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:50:41,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 12:50:41,004 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:50:41,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:50:41,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1722505003, now seen corresponding path program 1 times [2022-07-13 12:50:41,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:50:41,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016049244] [2022-07-13 12:50:41,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:50:41,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:50:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:50:41,190 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-13 12:50:41,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:50:41,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016049244] [2022-07-13 12:50:41,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016049244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:50:41,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:50:41,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 12:50:41,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598694463] [2022-07-13 12:50:41,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:50:41,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:50:41,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:50:41,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:50:41,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:50:41,195 INFO L87 Difference]: Start difference. First operand 9767 states and 13334 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:43,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:50:43,745 INFO L93 Difference]: Finished difference Result 27042 states and 37585 transitions. [2022-07-13 12:50:43,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:50:43,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 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 301 [2022-07-13 12:50:43,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:50:43,791 INFO L225 Difference]: With dead ends: 27042 [2022-07-13 12:50:43,792 INFO L226 Difference]: Without dead ends: 17277 [2022-07-13 12:50:43,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:50:43,804 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 697 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1973 mSolverCounterSat, 860 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 860 IncrementalHoareTripleChecker+Valid, 1973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 12:50:43,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 427 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [860 Valid, 1973 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 12:50:43,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17277 states. [2022-07-13 12:50:44,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17277 to 15775. [2022-07-13 12:50:44,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15774 states have (on average 1.2816026372511728) internal successors, (20216), 15774 states have internal predecessors, (20216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:44,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 20216 transitions. [2022-07-13 12:50:44,074 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 20216 transitions. Word has length 301 [2022-07-13 12:50:44,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:50:44,076 INFO L495 AbstractCegarLoop]: Abstraction has 15775 states and 20216 transitions. [2022-07-13 12:50:44,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 2 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:44,079 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 20216 transitions. [2022-07-13 12:50:44,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-07-13 12:50:44,086 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:50:44,087 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:50:44,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 12:50:44,088 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:50:44,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:50:44,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1111791984, now seen corresponding path program 1 times [2022-07-13 12:50:44,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:50:44,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469445296] [2022-07-13 12:50:44,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:50:44,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:50:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:50:44,351 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 307 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-13 12:50:44,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:50:44,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469445296] [2022-07-13 12:50:44,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469445296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:50:44,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:50:44,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:50:44,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132224381] [2022-07-13 12:50:44,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:50:44,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:50:44,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:50:44,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:50:44,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:50:44,354 INFO L87 Difference]: Start difference. First operand 15775 states and 20216 transitions. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:47,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:50:47,324 INFO L93 Difference]: Finished difference Result 39809 states and 52170 transitions. [2022-07-13 12:50:47,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:50:47,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 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 380 [2022-07-13 12:50:47,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:50:47,374 INFO L225 Difference]: With dead ends: 39809 [2022-07-13 12:50:47,375 INFO L226 Difference]: Without dead ends: 24036 [2022-07-13 12:50:47,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:50:47,395 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 776 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 1093 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 3130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1093 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 12:50:47,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 142 Invalid, 3130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1093 Valid, 2037 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 12:50:47,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24036 states. [2022-07-13 12:50:47,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24036 to 23285. [2022-07-13 12:50:47,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23285 states, 23284 states have (on average 1.3032554543892803) internal successors, (30345), 23284 states have internal predecessors, (30345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:47,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23285 states to 23285 states and 30345 transitions. [2022-07-13 12:50:47,736 INFO L78 Accepts]: Start accepts. Automaton has 23285 states and 30345 transitions. Word has length 380 [2022-07-13 12:50:47,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:50:47,738 INFO L495 AbstractCegarLoop]: Abstraction has 23285 states and 30345 transitions. [2022-07-13 12:50:47,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:47,738 INFO L276 IsEmpty]: Start isEmpty. Operand 23285 states and 30345 transitions. [2022-07-13 12:50:47,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2022-07-13 12:50:47,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:50:47,752 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:50:47,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 12:50:47,753 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:50:47,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:50:47,753 INFO L85 PathProgramCache]: Analyzing trace with hash -2131316438, now seen corresponding path program 1 times [2022-07-13 12:50:47,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:50:47,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070202394] [2022-07-13 12:50:47,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:50:47,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:50:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:50:47,909 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-13 12:50:47,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:50:47,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070202394] [2022-07-13 12:50:47,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070202394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:50:47,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:50:47,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:50:47,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755159562] [2022-07-13 12:50:47,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:50:47,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:50:47,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:50:47,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:50:47,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:50:47,912 INFO L87 Difference]: Start difference. First operand 23285 states and 30345 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:50,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:50:50,827 INFO L93 Difference]: Finished difference Result 57082 states and 74478 transitions. [2022-07-13 12:50:50,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:50:50,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 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 397 [2022-07-13 12:50:50,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:50:50,921 INFO L225 Difference]: With dead ends: 57082 [2022-07-13 12:50:50,921 INFO L226 Difference]: Without dead ends: 33799 [2022-07-13 12:50:50,954 INFO L412 NwaCegarLoop]: 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 [2022-07-13 12:50:50,956 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 734 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 3029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 12:50:50,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 217 Invalid, 3029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 12:50:50,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33799 states. [2022-07-13 12:50:51,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33799 to 33048. [2022-07-13 12:50:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33048 states, 33047 states have (on average 1.290797954428541) internal successors, (42657), 33047 states have internal predecessors, (42657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:51,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33048 states to 33048 states and 42657 transitions. [2022-07-13 12:50:51,394 INFO L78 Accepts]: Start accepts. Automaton has 33048 states and 42657 transitions. Word has length 397 [2022-07-13 12:50:51,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:50:51,395 INFO L495 AbstractCegarLoop]: Abstraction has 33048 states and 42657 transitions. [2022-07-13 12:50:51,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:51,396 INFO L276 IsEmpty]: Start isEmpty. Operand 33048 states and 42657 transitions. [2022-07-13 12:50:51,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2022-07-13 12:50:51,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:50:51,405 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:50:51,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 12:50:51,405 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:50:51,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:50:51,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1227272470, now seen corresponding path program 1 times [2022-07-13 12:50:51,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:50:51,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209232081] [2022-07-13 12:50:51,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:50:51,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:50:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:50:51,631 INFO L134 CoverageAnalysis]: Checked inductivity of 569 backedges. 448 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-07-13 12:50:51,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:50:51,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209232081] [2022-07-13 12:50:51,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209232081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:50:51,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:50:51,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:50:51,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295822260] [2022-07-13 12:50:51,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:50:51,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:50:51,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:50:51,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:50:51,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:50:51,634 INFO L87 Difference]: Start difference. First operand 33048 states and 42657 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:54,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:50:54,453 INFO L93 Difference]: Finished difference Result 89375 states and 116905 transitions. [2022-07-13 12:50:54,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:50:54,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 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 408 [2022-07-13 12:50:54,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:50:54,566 INFO L225 Difference]: With dead ends: 89375 [2022-07-13 12:50:54,567 INFO L226 Difference]: Without dead ends: 56329 [2022-07-13 12:50:54,602 INFO L412 NwaCegarLoop]: 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 [2022-07-13 12:50:54,603 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 720 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 12:50:54,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 421 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 12:50:54,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56329 states. [2022-07-13 12:50:55,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56329 to 54827. [2022-07-13 12:50:55,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54827 states, 54826 states have (on average 1.2623572757450845) internal successors, (69210), 54826 states have internal predecessors, (69210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:55,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54827 states to 54827 states and 69210 transitions. [2022-07-13 12:50:55,403 INFO L78 Accepts]: Start accepts. Automaton has 54827 states and 69210 transitions. Word has length 408 [2022-07-13 12:50:55,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:50:55,403 INFO L495 AbstractCegarLoop]: Abstraction has 54827 states and 69210 transitions. [2022-07-13 12:50:55,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:55,404 INFO L276 IsEmpty]: Start isEmpty. Operand 54827 states and 69210 transitions. [2022-07-13 12:50:55,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-07-13 12:50:55,412 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:50:55,412 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:50:55,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 12:50:55,412 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:50:55,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:50:55,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1177107803, now seen corresponding path program 1 times [2022-07-13 12:50:55,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:50:55,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522681079] [2022-07-13 12:50:55,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:50:55,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:50:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:50:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 345 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-13 12:50:55,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:50:55,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522681079] [2022-07-13 12:50:55,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522681079] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:50:55,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:50:55,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:50:55,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875717112] [2022-07-13 12:50:55,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:50:55,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:50:55,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:50:55,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:50:55,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:50:55,578 INFO L87 Difference]: Start difference. First operand 54827 states and 69210 transitions. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:50:58,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:50:58,638 INFO L93 Difference]: Finished difference Result 134435 states and 169113 transitions. [2022-07-13 12:50:58,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:50:58,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 422 [2022-07-13 12:50:58,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:50:58,831 INFO L225 Difference]: With dead ends: 134435 [2022-07-13 12:50:58,832 INFO L226 Difference]: Without dead ends: 79610 [2022-07-13 12:50:58,856 INFO L412 NwaCegarLoop]: 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 [2022-07-13 12:50:58,856 INFO L413 NwaCegarLoop]: 1331 mSDtfsCounter, 663 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2169 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 2701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 2169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 12:50:58,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1339 Invalid, 2701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 2169 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 12:50:58,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79610 states. [2022-07-13 12:50:59,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79610 to 75855. [2022-07-13 12:50:59,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75855 states, 75854 states have (on average 1.2253935191288527) internal successors, (92951), 75854 states have internal predecessors, (92951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:00,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75855 states to 75855 states and 92951 transitions. [2022-07-13 12:51:00,061 INFO L78 Accepts]: Start accepts. Automaton has 75855 states and 92951 transitions. Word has length 422 [2022-07-13 12:51:00,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:51:00,062 INFO L495 AbstractCegarLoop]: Abstraction has 75855 states and 92951 transitions. [2022-07-13 12:51:00,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:00,062 INFO L276 IsEmpty]: Start isEmpty. Operand 75855 states and 92951 transitions. [2022-07-13 12:51:00,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2022-07-13 12:51:00,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:51:00,072 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:51:00,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 12:51:00,073 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:51:00,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:51:00,074 INFO L85 PathProgramCache]: Analyzing trace with hash 401496922, now seen corresponding path program 1 times [2022-07-13 12:51:00,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:51:00,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033409446] [2022-07-13 12:51:00,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:51:00,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:51:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:51:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-13 12:51:00,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:51:00,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033409446] [2022-07-13 12:51:00,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033409446] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:51:00,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:51:00,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:51:00,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675735266] [2022-07-13 12:51:00,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:51:00,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:51:00,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:51:00,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:51:00,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:51:00,348 INFO L87 Difference]: Start difference. First operand 75855 states and 92951 transitions. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:03,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:51:03,122 INFO L93 Difference]: Finished difference Result 164475 states and 200519 transitions. [2022-07-13 12:51:03,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:51:03,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 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 434 [2022-07-13 12:51:03,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:51:03,262 INFO L225 Difference]: With dead ends: 164475 [2022-07-13 12:51:03,262 INFO L226 Difference]: Without dead ends: 88622 [2022-07-13 12:51:03,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:51:03,316 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 803 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2138 mSolverCounterSat, 591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 591 IncrementalHoareTripleChecker+Valid, 2138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 12:51:03,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 912 Invalid, 2729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [591 Valid, 2138 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 12:51:03,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88622 states. [2022-07-13 12:51:04,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88622 to 82614. [2022-07-13 12:51:04,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82614 states, 82613 states have (on average 1.1837725297471342) internal successors, (97795), 82613 states have internal predecessors, (97795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82614 states to 82614 states and 97795 transitions. [2022-07-13 12:51:04,403 INFO L78 Accepts]: Start accepts. Automaton has 82614 states and 97795 transitions. Word has length 434 [2022-07-13 12:51:04,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:51:04,404 INFO L495 AbstractCegarLoop]: Abstraction has 82614 states and 97795 transitions. [2022-07-13 12:51:04,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:04,404 INFO L276 IsEmpty]: Start isEmpty. Operand 82614 states and 97795 transitions. [2022-07-13 12:51:04,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2022-07-13 12:51:04,429 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:51:04,429 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:51:04,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 12:51:04,430 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:51:04,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:51:04,430 INFO L85 PathProgramCache]: Analyzing trace with hash -424253715, now seen corresponding path program 1 times [2022-07-13 12:51:04,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:51:04,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774408460] [2022-07-13 12:51:04,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:51:04,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:51:04,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:51:04,826 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 547 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-13 12:51:04,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:51:04,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774408460] [2022-07-13 12:51:04,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774408460] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:51:04,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:51:04,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:51:04,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098291250] [2022-07-13 12:51:04,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:51:04,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:51:04,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:51:04,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:51:04,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:51:04,829 INFO L87 Difference]: Start difference. First operand 82614 states and 97795 transitions. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:08,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:51:08,052 INFO L93 Difference]: Finished difference Result 193764 states and 229916 transitions. [2022-07-13 12:51:08,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:51:08,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 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 554 [2022-07-13 12:51:08,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:51:08,199 INFO L225 Difference]: With dead ends: 193764 [2022-07-13 12:51:08,200 INFO L226 Difference]: Without dead ends: 111152 [2022-07-13 12:51:08,227 INFO L412 NwaCegarLoop]: 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 [2022-07-13 12:51:08,228 INFO L413 NwaCegarLoop]: 1259 mSDtfsCounter, 584 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 2848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 12:51:08,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 1267 Invalid, 2848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 12:51:08,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111152 states. [2022-07-13 12:51:09,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111152 to 100638. [2022-07-13 12:51:09,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100638 states, 100637 states have (on average 1.1604777566898854) internal successors, (116787), 100637 states have internal predecessors, (116787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:09,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100638 states to 100638 states and 116787 transitions. [2022-07-13 12:51:09,635 INFO L78 Accepts]: Start accepts. Automaton has 100638 states and 116787 transitions. Word has length 554 [2022-07-13 12:51:09,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:51:09,635 INFO L495 AbstractCegarLoop]: Abstraction has 100638 states and 116787 transitions. [2022-07-13 12:51:09,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:09,635 INFO L276 IsEmpty]: Start isEmpty. Operand 100638 states and 116787 transitions. [2022-07-13 12:51:09,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2022-07-13 12:51:09,653 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:51:09,653 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:51:09,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 12:51:09,654 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:51:09,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:51:09,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1521170866, now seen corresponding path program 1 times [2022-07-13 12:51:09,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:51:09,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292758852] [2022-07-13 12:51:09,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:51:09,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:51:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:51:10,107 INFO L134 CoverageAnalysis]: Checked inductivity of 818 backedges. 684 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2022-07-13 12:51:10,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:51:10,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292758852] [2022-07-13 12:51:10,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292758852] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:51:10,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:51:10,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:51:10,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420191900] [2022-07-13 12:51:10,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:51:10,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:51:10,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:51:10,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:51:10,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:51:10,110 INFO L87 Difference]: Start difference. First operand 100638 states and 116787 transitions. Second operand has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:13,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:51:13,014 INFO L93 Difference]: Finished difference Result 203527 states and 235840 transitions. [2022-07-13 12:51:13,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:51:13,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 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 584 [2022-07-13 12:51:13,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:51:13,162 INFO L225 Difference]: With dead ends: 203527 [2022-07-13 12:51:13,162 INFO L226 Difference]: Without dead ends: 102891 [2022-07-13 12:51:13,211 INFO L412 NwaCegarLoop]: 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 [2022-07-13 12:51:13,211 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 761 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2229 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 2663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 12:51:13,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 220 Invalid, 2663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2229 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 12:51:13,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102891 states. [2022-07-13 12:51:14,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102891 to 98385. [2022-07-13 12:51:14,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98385 states, 98384 states have (on average 1.123617661408359) internal successors, (110546), 98384 states have internal predecessors, (110546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:14,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98385 states to 98385 states and 110546 transitions. [2022-07-13 12:51:14,695 INFO L78 Accepts]: Start accepts. Automaton has 98385 states and 110546 transitions. Word has length 584 [2022-07-13 12:51:14,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:51:14,696 INFO L495 AbstractCegarLoop]: Abstraction has 98385 states and 110546 transitions. [2022-07-13 12:51:14,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:14,696 INFO L276 IsEmpty]: Start isEmpty. Operand 98385 states and 110546 transitions. [2022-07-13 12:51:14,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2022-07-13 12:51:14,710 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:51:14,710 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:51:14,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 12:51:14,711 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:51:14,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:51:14,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1369049923, now seen corresponding path program 1 times [2022-07-13 12:51:14,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:51:14,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537779405] [2022-07-13 12:51:14,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:51:14,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:51:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:51:14,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 402 proven. 0 refuted. 0 times theorem prover too weak. 640 trivial. 0 not checked. [2022-07-13 12:51:14,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:51:14,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537779405] [2022-07-13 12:51:14,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537779405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:51:14,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:51:14,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:51:14,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497643117] [2022-07-13 12:51:14,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:51:14,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:51:14,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:51:14,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:51:14,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:51:14,977 INFO L87 Difference]: Start difference. First operand 98385 states and 110546 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:18,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:51:18,322 INFO L93 Difference]: Finished difference Result 219298 states and 246943 transitions. [2022-07-13 12:51:18,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:51:18,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 600 [2022-07-13 12:51:18,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:51:18,500 INFO L225 Difference]: With dead ends: 219298 [2022-07-13 12:51:18,500 INFO L226 Difference]: Without dead ends: 120915 [2022-07-13 12:51:18,546 INFO L412 NwaCegarLoop]: 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 [2022-07-13 12:51:18,550 INFO L413 NwaCegarLoop]: 1109 mSDtfsCounter, 806 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 2690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-13 12:51:18,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1117 Invalid, 2690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 2198 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-13 12:51:18,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120915 states. [2022-07-13 12:51:19,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120915 to 119413. [2022-07-13 12:51:19,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119413 states, 119412 states have (on average 1.1120741634006632) internal successors, (132795), 119412 states have internal predecessors, (132795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:20,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119413 states to 119413 states and 132795 transitions. [2022-07-13 12:51:20,479 INFO L78 Accepts]: Start accepts. Automaton has 119413 states and 132795 transitions. Word has length 600 [2022-07-13 12:51:20,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:51:20,480 INFO L495 AbstractCegarLoop]: Abstraction has 119413 states and 132795 transitions. [2022-07-13 12:51:20,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:20,480 INFO L276 IsEmpty]: Start isEmpty. Operand 119413 states and 132795 transitions. [2022-07-13 12:51:20,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2022-07-13 12:51:20,496 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:51:20,496 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:51:20,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 12:51:20,497 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:51:20,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:51:20,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1488648811, now seen corresponding path program 1 times [2022-07-13 12:51:20,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:51:20,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519584622] [2022-07-13 12:51:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:51:20,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:51:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:51:20,686 INFO L134 CoverageAnalysis]: Checked inductivity of 876 backedges. 724 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-13 12:51:20,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:51:20,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519584622] [2022-07-13 12:51:20,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519584622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:51:20,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:51:20,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:51:20,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026798728] [2022-07-13 12:51:20,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:51:20,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:51:20,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:51:20,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:51:20,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:51:20,689 INFO L87 Difference]: Start difference. First operand 119413 states and 132795 transitions. Second operand has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:23,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:51:23,927 INFO L93 Difference]: Finished difference Result 238824 states and 265588 transitions. [2022-07-13 12:51:23,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:51:23,928 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 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 606 [2022-07-13 12:51:23,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:51:24,096 INFO L225 Difference]: With dead ends: 238824 [2022-07-13 12:51:24,096 INFO L226 Difference]: Without dead ends: 119413 [2022-07-13 12:51:24,149 INFO L412 NwaCegarLoop]: 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 [2022-07-13 12:51:24,149 INFO L413 NwaCegarLoop]: 1276 mSDtfsCounter, 647 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 2634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-13 12:51:24,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1284 Invalid, 2634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 2242 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-13 12:51:24,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119413 states. [2022-07-13 12:51:25,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119413 to 113405. [2022-07-13 12:51:25,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113405 states, 113404 states have (on average 1.0837801135762406) internal successors, (122905), 113404 states have internal predecessors, (122905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:25,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113405 states to 113405 states and 122905 transitions. [2022-07-13 12:51:25,857 INFO L78 Accepts]: Start accepts. Automaton has 113405 states and 122905 transitions. Word has length 606 [2022-07-13 12:51:25,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:51:25,858 INFO L495 AbstractCegarLoop]: Abstraction has 113405 states and 122905 transitions. [2022-07-13 12:51:25,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:25,858 INFO L276 IsEmpty]: Start isEmpty. Operand 113405 states and 122905 transitions. [2022-07-13 12:51:25,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 622 [2022-07-13 12:51:25,872 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:51:25,872 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:51:25,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 12:51:25,873 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:51:25,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:51:25,873 INFO L85 PathProgramCache]: Analyzing trace with hash 129179757, now seen corresponding path program 1 times [2022-07-13 12:51:25,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:51:25,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403478746] [2022-07-13 12:51:25,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:51:25,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:51:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:51:26,128 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 539 proven. 0 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2022-07-13 12:51:26,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:51:26,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403478746] [2022-07-13 12:51:26,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403478746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:51:26,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:51:26,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:51:26,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678565671] [2022-07-13 12:51:26,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:51:26,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:51:26,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:51:26,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:51:26,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:51:26,131 INFO L87 Difference]: Start difference. First operand 113405 states and 122905 transitions. Second operand has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:29,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:51:29,182 INFO L93 Difference]: Finished difference Result 231314 states and 250382 transitions. [2022-07-13 12:51:29,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:51:29,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 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 621 [2022-07-13 12:51:29,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:51:29,335 INFO L225 Difference]: With dead ends: 231314 [2022-07-13 12:51:29,335 INFO L226 Difference]: Without dead ends: 117160 [2022-07-13 12:51:29,391 INFO L412 NwaCegarLoop]: 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 [2022-07-13 12:51:29,392 INFO L413 NwaCegarLoop]: 993 mSDtfsCounter, 723 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 2642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-13 12:51:29,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 1000 Invalid, 2642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [558 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-13 12:51:29,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117160 states. [2022-07-13 12:51:30,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117160 to 102140. [2022-07-13 12:51:30,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102140 states, 102139 states have (on average 1.0688473550749469) internal successors, (109171), 102139 states have internal predecessors, (109171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:30,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102140 states to 102140 states and 109171 transitions. [2022-07-13 12:51:30,791 INFO L78 Accepts]: Start accepts. Automaton has 102140 states and 109171 transitions. Word has length 621 [2022-07-13 12:51:30,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:51:30,791 INFO L495 AbstractCegarLoop]: Abstraction has 102140 states and 109171 transitions. [2022-07-13 12:51:30,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:30,791 INFO L276 IsEmpty]: Start isEmpty. Operand 102140 states and 109171 transitions. [2022-07-13 12:51:31,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 886 [2022-07-13 12:51:31,186 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:51:31,187 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:51:31,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 12:51:31,187 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:51:31,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:51:31,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1412267144, now seen corresponding path program 1 times [2022-07-13 12:51:31,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:51:31,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075330657] [2022-07-13 12:51:31,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:51:31,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:51:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:51:31,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1304 backedges. 948 proven. 0 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-07-13 12:51:31,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:51:31,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075330657] [2022-07-13 12:51:31,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075330657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:51:31,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:51:31,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:51:31,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726186732] [2022-07-13 12:51:31,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:51:31,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:51:31,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:51:31,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:51:31,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:51:31,441 INFO L87 Difference]: Start difference. First operand 102140 states and 109171 transitions. Second operand has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:34,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:51:34,376 INFO L93 Difference]: Finished difference Result 232065 states and 249085 transitions. [2022-07-13 12:51:34,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:51:34,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 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 885 [2022-07-13 12:51:34,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:51:34,544 INFO L225 Difference]: With dead ends: 232065 [2022-07-13 12:51:34,544 INFO L226 Difference]: Without dead ends: 130678 [2022-07-13 12:51:34,586 INFO L412 NwaCegarLoop]: 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 [2022-07-13 12:51:34,586 INFO L413 NwaCegarLoop]: 1231 mSDtfsCounter, 682 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 2544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 12:51:34,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1239 Invalid, 2544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 12:51:34,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130678 states. [2022-07-13 12:51:35,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130678 to 128425. [2022-07-13 12:51:36,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128425 states, 128424 states have (on average 1.0613436740796114) internal successors, (136302), 128424 states have internal predecessors, (136302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:36,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128425 states to 128425 states and 136302 transitions. [2022-07-13 12:51:36,190 INFO L78 Accepts]: Start accepts. Automaton has 128425 states and 136302 transitions. Word has length 885 [2022-07-13 12:51:36,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:51:36,191 INFO L495 AbstractCegarLoop]: Abstraction has 128425 states and 136302 transitions. [2022-07-13 12:51:36,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:36,191 INFO L276 IsEmpty]: Start isEmpty. Operand 128425 states and 136302 transitions. [2022-07-13 12:51:36,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 940 [2022-07-13 12:51:36,226 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:51:36,227 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:51:36,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 12:51:36,227 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:51:36,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:51:36,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1769881922, now seen corresponding path program 1 times [2022-07-13 12:51:36,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:51:36,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676742270] [2022-07-13 12:51:36,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:51:36,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:51:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:51:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 853 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-07-13 12:51:37,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:51:37,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676742270] [2022-07-13 12:51:37,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676742270] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:51:37,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:51:37,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:51:37,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229707904] [2022-07-13 12:51:37,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:51:37,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:51:37,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:51:37,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:51:37,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:51:37,032 INFO L87 Difference]: Start difference. First operand 128425 states and 136302 transitions. Second operand has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:40,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:51:40,412 INFO L93 Difference]: Finished difference Result 286137 states and 303222 transitions. [2022-07-13 12:51:40,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:51:40,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 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 939 [2022-07-13 12:51:40,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:51:40,627 INFO L225 Difference]: With dead ends: 286137 [2022-07-13 12:51:40,627 INFO L226 Difference]: Without dead ends: 158465 [2022-07-13 12:51:40,680 INFO L412 NwaCegarLoop]: 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 [2022-07-13 12:51:40,680 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 435 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2571 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-13 12:51:40,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 1176 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2571 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-13 12:51:40,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158465 states. [2022-07-13 12:51:42,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158465 to 144947. [2022-07-13 12:51:42,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144947 states, 144946 states have (on average 1.0561864418473086) internal successors, (153090), 144946 states have internal predecessors, (153090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:42,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144947 states to 144947 states and 153090 transitions. [2022-07-13 12:51:42,942 INFO L78 Accepts]: Start accepts. Automaton has 144947 states and 153090 transitions. Word has length 939 [2022-07-13 12:51:42,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 12:51:42,942 INFO L495 AbstractCegarLoop]: Abstraction has 144947 states and 153090 transitions. [2022-07-13 12:51:42,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:42,943 INFO L276 IsEmpty]: Start isEmpty. Operand 144947 states and 153090 transitions. [2022-07-13 12:51:42,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2022-07-13 12:51:42,983 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 12:51:42,984 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 12:51:42,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 12:51:42,984 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 12:51:42,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 12:51:42,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1853689759, now seen corresponding path program 1 times [2022-07-13 12:51:42,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 12:51:42,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892495018] [2022-07-13 12:51:42,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 12:51:42,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 12:51:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 12:51:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1179 backedges. 655 proven. 0 refuted. 0 times theorem prover too weak. 524 trivial. 0 not checked. [2022-07-13 12:51:43,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 12:51:43,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892495018] [2022-07-13 12:51:43,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892495018] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 12:51:43,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 12:51:43,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 12:51:43,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445512109] [2022-07-13 12:51:43,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 12:51:43,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 12:51:43,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 12:51:43,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 12:51:43,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 12:51:43,338 INFO L87 Difference]: Start difference. First operand 144947 states and 153090 transitions. Second operand has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 12:51:46,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 12:51:46,927 INFO L93 Difference]: Finished difference Result 324438 states and 343375 transitions. [2022-07-13 12:51:46,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 12:51:46,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 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 972 [2022-07-13 12:51:46,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 12:51:47,171 INFO L225 Difference]: With dead ends: 324438 [2022-07-13 12:51:47,172 INFO L226 Difference]: Without dead ends: 180244 [2022-07-13 12:51:47,257 INFO L412 NwaCegarLoop]: 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 [2022-07-13 12:51:47,258 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 651 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 2975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-13 12:51:47,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 366 Invalid, 2975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [659 Valid, 2316 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-13 12:51:47,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180244 states. [2022-07-13 12:51:49,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180244 to 177991. [2022-07-13 12:51:49,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177991 states, 177990 states have (on average 1.0573403000168549) internal successors, (188196), 177990 states have internal predecessors, (188196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)