./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label09.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/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label09.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 f0019835903a95f4d3f7c696114f56c447778d466a9f664790fb278d4bca829f --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 21:04:11,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 21:04:11,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 21:04:11,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 21:04:11,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 21:04:11,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 21:04:11,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 21:04:11,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 21:04:11,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 21:04:11,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 21:04:11,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 21:04:11,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 21:04:11,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 21:04:11,805 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 21:04:11,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 21:04:11,809 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 21:04:11,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 21:04:11,810 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 21:04:11,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 21:04:11,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 21:04:11,817 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 21:04:11,817 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 21:04:11,818 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 21:04:11,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 21:04:11,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 21:04:11,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 21:04:11,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 21:04:11,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 21:04:11,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 21:04:11,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 21:04:11,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 21:04:11,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 21:04:11,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 21:04:11,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 21:04:11,829 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 21:04:11,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 21:04:11,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 21:04:11,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 21:04:11,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 21:04:11,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 21:04:11,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 21:04:11,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 21:04:11,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 21:04:11,855 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 21:04:11,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 21:04:11,856 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 21:04:11,856 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 21:04:11,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 21:04:11,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 21:04:11,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 21:04:11,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 21:04:11,857 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 21:04:11,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 21:04:11,858 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 21:04:11,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 21:04:11,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 21:04:11,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 21:04:11,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 21:04:11,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 21:04:11,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 21:04:11,859 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 21:04:11,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 21:04:11,859 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 21:04:11,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 21:04:11,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 21:04:11,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 21:04:11,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 21:04:11,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:04:11,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 21:04:11,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 21:04:11,860 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 21:04:11,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 21:04:11,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 21:04:11,861 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 21:04:11,861 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 21:04:11,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 21:04:11,861 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0019835903a95f4d3f7c696114f56c447778d466a9f664790fb278d4bca829f [2022-07-13 21:04:12,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 21:04:12,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 21:04:12,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 21:04:12,055 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 21:04:12,056 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 21:04:12,057 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-07-13 21:04:12,108 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d2affdcd/1ebf96cd5ce04744893a2351aa4ce42d/FLAG01f6baae8 [2022-07-13 21:04:12,739 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 21:04:12,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-07-13 21:04:12,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d2affdcd/1ebf96cd5ce04744893a2351aa4ce42d/FLAG01f6baae8 [2022-07-13 21:04:13,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d2affdcd/1ebf96cd5ce04744893a2351aa4ce42d [2022-07-13 21:04:13,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 21:04:13,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 21:04:13,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 21:04:13,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 21:04:13,151 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 21:04:13,152 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:04:13" (1/1) ... [2022-07-13 21:04:13,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fd24fe7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:04:13, skipping insertion in model container [2022-07-13 21:04:13,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 09:04:13" (1/1) ... [2022-07-13 21:04:13,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 21:04:13,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 21:04:13,649 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/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label09.c[26925,26938] [2022-07-13 21:04:13,678 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/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label09.c[34673,34686] [2022-07-13 21:04:14,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:04:14,108 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 21:04:14,150 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/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label09.c[26925,26938] [2022-07-13 21:04:14,158 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/combinations/pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label09.c[34673,34686] [2022-07-13 21:04:14,434 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 21:04:14,453 INFO L208 MainTranslator]: Completed translation [2022-07-13 21:04:14,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:04:14 WrapperNode [2022-07-13 21:04:14,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 21:04:14,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 21:04:14,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 21:04:14,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 21:04:14,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:04:14" (1/1) ... [2022-07-13 21:04:14,505 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:04:14" (1/1) ... [2022-07-13 21:04:14,785 INFO L137 Inliner]: procedures = 40, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5280 [2022-07-13 21:04:14,785 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 21:04:14,786 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 21:04:14,786 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 21:04:14,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 21:04:14,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:04:14" (1/1) ... [2022-07-13 21:04:14,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:04:14" (1/1) ... [2022-07-13 21:04:14,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:04:14" (1/1) ... [2022-07-13 21:04:14,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:04:14" (1/1) ... [2022-07-13 21:04:15,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:04:14" (1/1) ... [2022-07-13 21:04:15,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:04:14" (1/1) ... [2022-07-13 21:04:15,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:04:14" (1/1) ... [2022-07-13 21:04:15,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 21:04:15,255 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 21:04:15,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 21:04:15,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 21:04:15,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:04:14" (1/1) ... [2022-07-13 21:04:15,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 21:04:15,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 21:04:15,296 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 21:04:15,310 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 21:04:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 21:04:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 21:04:15,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 21:04:15,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 21:04:15,494 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 21:04:15,495 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 21:04:18,099 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 21:04:18,111 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 21:04:18,112 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 21:04:18,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:04:18 BoogieIcfgContainer [2022-07-13 21:04:18,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 21:04:18,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 21:04:18,115 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 21:04:18,118 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 21:04:18,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 09:04:13" (1/3) ... [2022-07-13 21:04:18,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261cc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:04:18, skipping insertion in model container [2022-07-13 21:04:18,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 09:04:14" (2/3) ... [2022-07-13 21:04:18,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261cc69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 09:04:18, skipping insertion in model container [2022-07-13 21:04:18,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 09:04:18" (3/3) ... [2022-07-13 21:04:18,119 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.1.ufo.UNBOUNDED.pals+Problem12_label09.c [2022-07-13 21:04:18,129 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 21:04:18,129 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 21:04:18,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 21:04:18,177 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@4690558c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2ade41c2 [2022-07-13 21:04:18,177 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 21:04:18,183 INFO L276 IsEmpty]: Start isEmpty. Operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 0 states have call successors, (0), 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 21:04:18,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-13 21:04:18,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:04:18,191 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:04:18,192 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:04:18,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:04:18,195 INFO L85 PathProgramCache]: Analyzing trace with hash -805214309, now seen corresponding path program 1 times [2022-07-13 21:04:18,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:04:18,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968119105] [2022-07-13 21:04:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:04:18,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:04:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:04:18,360 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 21:04:18,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:04:18,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968119105] [2022-07-13 21:04:18,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968119105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:04:18,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:04:18,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 21:04:18,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304490383] [2022-07-13 21:04:18,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:04:18,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 21:04:18,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:04:18,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 21:04:18,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 21:04:18,385 INFO L87 Difference]: Start difference. First operand has 965 states, 962 states have (on average 1.8960498960498962) internal successors, (1824), 964 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:04:18,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:04:18,436 INFO L93 Difference]: Finished difference Result 1861 states and 3516 transitions. [2022-07-13 21:04:18,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 21:04:18,438 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-07-13 21:04:18,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:04:18,450 INFO L225 Difference]: With dead ends: 1861 [2022-07-13 21:04:18,450 INFO L226 Difference]: Without dead ends: 899 [2022-07-13 21:04:18,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 21:04:18,457 INFO L413 NwaCegarLoop]: 1755 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1755 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:04:18,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1755 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:04:18,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2022-07-13 21:04:18,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2022-07-13 21:04:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 897 states have (on average 1.8851727982162765) internal successors, (1691), 898 states have internal predecessors, (1691), 0 states have call successors, (0), 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 21:04:18,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1691 transitions. [2022-07-13 21:04:18,513 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1691 transitions. Word has length 46 [2022-07-13 21:04:18,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:04:18,514 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1691 transitions. [2022-07-13 21:04:18,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:04:18,514 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1691 transitions. [2022-07-13 21:04:18,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-13 21:04:18,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:04:18,515 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 21:04:18,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 21:04:18,515 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:04:18,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:04:18,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2117945689, now seen corresponding path program 1 times [2022-07-13 21:04:18,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:04:18,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603388672] [2022-07-13 21:04:18,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:04:18,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:04:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:04:18,606 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 21:04:18,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:04:18,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603388672] [2022-07-13 21:04:18,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603388672] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:04:18,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:04:18,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:04:18,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887178702] [2022-07-13 21:04:18,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:04:18,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:04:18,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:04:18,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:04:18,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:04:18,608 INFO L87 Difference]: Start difference. First operand 899 states and 1691 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:04:18,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:04:18,715 INFO L93 Difference]: Finished difference Result 981 states and 1819 transitions. [2022-07-13 21:04:18,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 21:04:18,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-07-13 21:04:18,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:04:18,719 INFO L225 Difference]: With dead ends: 981 [2022-07-13 21:04:18,719 INFO L226 Difference]: Without dead ends: 899 [2022-07-13 21:04:18,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 21:04:18,720 INFO L413 NwaCegarLoop]: 1689 mSDtfsCounter, 3 mSDsluCounter, 5003 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6692 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:04:18,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6692 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:04:18,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2022-07-13 21:04:18,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2022-07-13 21:04:18,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 897 states have (on average 1.8171683389074693) internal successors, (1630), 898 states have internal predecessors, (1630), 0 states have call successors, (0), 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 21:04:18,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1630 transitions. [2022-07-13 21:04:18,736 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1630 transitions. Word has length 46 [2022-07-13 21:04:18,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:04:18,736 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1630 transitions. [2022-07-13 21:04:18,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 21:04:18,736 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1630 transitions. [2022-07-13 21:04:18,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 21:04:18,737 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:04:18,737 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, 1, 1, 1, 1, 1, 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 21:04:18,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 21:04:18,737 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:04:18,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:04:18,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1295391643, now seen corresponding path program 1 times [2022-07-13 21:04:18,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:04:18,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756388054] [2022-07-13 21:04:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:04:18,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:04:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:04:18,863 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 21:04:18,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:04:18,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756388054] [2022-07-13 21:04:18,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756388054] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:04:18,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:04:18,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:04:18,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126073030] [2022-07-13 21:04:18,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:04:18,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:04:18,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:04:18,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:04:18,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:04:18,865 INFO L87 Difference]: Start difference. First operand 899 states and 1630 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 21:04:25,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:04:25,001 INFO L93 Difference]: Finished difference Result 3154 states and 5939 transitions. [2022-07-13 21:04:25,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 21:04:25,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-07-13 21:04:25,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:04:25,013 INFO L225 Difference]: With dead ends: 3154 [2022-07-13 21:04:25,015 INFO L226 Difference]: Without dead ends: 2401 [2022-07-13 21:04:25,023 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 21:04:25,024 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 2553 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2553 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 6515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1161 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:04:25,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2553 Valid, 884 Invalid, 6515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1161 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-07-13 21:04:25,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2022-07-13 21:04:25,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 2401. [2022-07-13 21:04:25,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2401 states, 2399 states have (on average 1.5606502709462275) internal successors, (3744), 2400 states have internal predecessors, (3744), 0 states have call successors, (0), 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 21:04:25,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 3744 transitions. [2022-07-13 21:04:25,167 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 3744 transitions. Word has length 67 [2022-07-13 21:04:25,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:04:25,168 INFO L495 AbstractCegarLoop]: Abstraction has 2401 states and 3744 transitions. [2022-07-13 21:04:25,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 21:04:25,168 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 3744 transitions. [2022-07-13 21:04:25,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:04:25,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:04:25,181 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:25,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 21:04:25,182 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:04:25,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:04:25,183 INFO L85 PathProgramCache]: Analyzing trace with hash 211182729, now seen corresponding path program 1 times [2022-07-13 21:04:25,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:04:25,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013789929] [2022-07-13 21:04:25,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:04:25,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:04:25,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:04:25,354 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 21:04:25,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:04:25,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013789929] [2022-07-13 21:04:25,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013789929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:04:25,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:04:25,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:04:25,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038485833] [2022-07-13 21:04:25,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:04:25,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:04:25,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:04:25,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:04:25,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:04:25,356 INFO L87 Difference]: Start difference. First operand 2401 states and 3744 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 21:04:25,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:04:25,384 INFO L93 Difference]: Finished difference Result 2551 states and 3982 transitions. [2022-07-13 21:04:25,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:04:25,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-13 21:04:25,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:04:25,391 INFO L225 Difference]: With dead ends: 2551 [2022-07-13 21:04:25,392 INFO L226 Difference]: Without dead ends: 2473 [2022-07-13 21:04:25,393 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 21:04:25,394 INFO L413 NwaCegarLoop]: 1724 mSDtfsCounter, 1549 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:04:25,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:04:25,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2473 states. [2022-07-13 21:04:25,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2473 to 2471. [2022-07-13 21:04:25,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2471 states, 2469 states have (on average 1.5617658971243418) internal successors, (3856), 2470 states have internal predecessors, (3856), 0 states have call successors, (0), 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 21:04:25,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 3856 transitions. [2022-07-13 21:04:25,435 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 3856 transitions. Word has length 106 [2022-07-13 21:04:25,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:04:25,435 INFO L495 AbstractCegarLoop]: Abstraction has 2471 states and 3856 transitions. [2022-07-13 21:04:25,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 21:04:25,436 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 3856 transitions. [2022-07-13 21:04:25,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:04:25,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:04:25,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:25,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 21:04:25,439 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:04:25,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:04:25,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1458691583, now seen corresponding path program 1 times [2022-07-13 21:04:25,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:04:25,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987689547] [2022-07-13 21:04:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:04:25,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:04:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:04:25,494 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 21:04:25,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:04:25,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987689547] [2022-07-13 21:04:25,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987689547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:04:25,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:04:25,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:04:25,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851250955] [2022-07-13 21:04:25,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:04:25,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:04:25,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:04:25,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:04:25,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:04:25,497 INFO L87 Difference]: Start difference. First operand 2471 states and 3856 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 21:04:25,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:04:25,527 INFO L93 Difference]: Finished difference Result 2755 states and 4308 transitions. [2022-07-13 21:04:25,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:04:25,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-13 21:04:25,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:04:25,534 INFO L225 Difference]: With dead ends: 2755 [2022-07-13 21:04:25,534 INFO L226 Difference]: Without dead ends: 2607 [2022-07-13 21:04:25,535 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 21:04:25,536 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 1545 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:04:25,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 1849 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:04:25,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2607 states. [2022-07-13 21:04:25,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2607 to 2605. [2022-07-13 21:04:25,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2605 states, 2603 states have (on average 1.5631963119477525) internal successors, (4069), 2604 states have internal predecessors, (4069), 0 states have call successors, (0), 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 21:04:25,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 4069 transitions. [2022-07-13 21:04:25,623 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 4069 transitions. Word has length 106 [2022-07-13 21:04:25,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:04:25,625 INFO L495 AbstractCegarLoop]: Abstraction has 2605 states and 4069 transitions. [2022-07-13 21:04:25,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 21:04:25,625 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 4069 transitions. [2022-07-13 21:04:25,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:04:25,626 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:04:25,626 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:25,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 21:04:25,627 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:04:25,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:04:25,627 INFO L85 PathProgramCache]: Analyzing trace with hash 717259381, now seen corresponding path program 1 times [2022-07-13 21:04:25,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:04:25,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226323782] [2022-07-13 21:04:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:04:25,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:04:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:04:25,672 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 21:04:25,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:04:25,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226323782] [2022-07-13 21:04:25,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226323782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:04:25,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:04:25,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:04:25,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401312815] [2022-07-13 21:04:25,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:04:25,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:04:25,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:04:25,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:04:25,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:04:25,675 INFO L87 Difference]: Start difference. First operand 2605 states and 4069 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 21:04:25,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:04:25,707 INFO L93 Difference]: Finished difference Result 3145 states and 4927 transitions. [2022-07-13 21:04:25,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:04:25,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-13 21:04:25,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:04:25,715 INFO L225 Difference]: With dead ends: 3145 [2022-07-13 21:04:25,715 INFO L226 Difference]: Without dead ends: 2863 [2022-07-13 21:04:25,716 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 21:04:25,716 INFO L413 NwaCegarLoop]: 1714 mSDtfsCounter, 1541 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:04:25,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 1848 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:04:25,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2022-07-13 21:04:25,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2861. [2022-07-13 21:04:25,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2861 states, 2859 states have (on average 1.564533053515215) internal successors, (4473), 2860 states have internal predecessors, (4473), 0 states have call successors, (0), 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 21:04:25,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2861 states to 2861 states and 4473 transitions. [2022-07-13 21:04:25,760 INFO L78 Accepts]: Start accepts. Automaton has 2861 states and 4473 transitions. Word has length 106 [2022-07-13 21:04:25,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:04:25,761 INFO L495 AbstractCegarLoop]: Abstraction has 2861 states and 4473 transitions. [2022-07-13 21:04:25,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 21:04:25,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2861 states and 4473 transitions. [2022-07-13 21:04:25,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:04:25,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:04:25,762 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:25,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 21:04:25,763 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:04:25,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:04:25,763 INFO L85 PathProgramCache]: Analyzing trace with hash -28323349, now seen corresponding path program 1 times [2022-07-13 21:04:25,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:04:25,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183480363] [2022-07-13 21:04:25,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:04:25,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:04:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:04:25,805 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 21:04:25,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:04:25,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183480363] [2022-07-13 21:04:25,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183480363] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:04:25,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:04:25,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:04:25,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067994999] [2022-07-13 21:04:25,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:04:25,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:04:25,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:04:25,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:04:25,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:04:25,807 INFO L87 Difference]: Start difference. First operand 2861 states and 4473 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 21:04:25,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:04:25,852 INFO L93 Difference]: Finished difference Result 3889 states and 6099 transitions. [2022-07-13 21:04:25,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:04:25,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-13 21:04:25,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:04:25,861 INFO L225 Difference]: With dead ends: 3889 [2022-07-13 21:04:25,861 INFO L226 Difference]: Without dead ends: 3351 [2022-07-13 21:04:25,862 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 21:04:25,863 INFO L413 NwaCegarLoop]: 1709 mSDtfsCounter, 1537 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:04:25,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1537 Valid, 1847 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:04:25,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3351 states. [2022-07-13 21:04:25,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3351 to 3349. [2022-07-13 21:04:25,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3349 states, 3347 states have (on average 1.5646847923513594) internal successors, (5237), 3348 states have internal predecessors, (5237), 0 states have call successors, (0), 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 21:04:25,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 5237 transitions. [2022-07-13 21:04:25,924 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 5237 transitions. Word has length 106 [2022-07-13 21:04:25,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:04:25,924 INFO L495 AbstractCegarLoop]: Abstraction has 3349 states and 5237 transitions. [2022-07-13 21:04:25,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 21:04:25,925 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 5237 transitions. [2022-07-13 21:04:25,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:04:25,926 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:04:25,926 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:25,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 21:04:25,926 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:04:25,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:04:25,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1968354207, now seen corresponding path program 1 times [2022-07-13 21:04:25,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:04:25,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533515722] [2022-07-13 21:04:25,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:04:25,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:04:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:04:25,966 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 21:04:25,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:04:25,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533515722] [2022-07-13 21:04:25,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533515722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:04:25,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:04:25,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:04:25,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838639762] [2022-07-13 21:04:25,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:04:25,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:04:25,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:04:25,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:04:25,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:04:25,968 INFO L87 Difference]: Start difference. First operand 3349 states and 5237 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 21:04:26,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:04:26,035 INFO L93 Difference]: Finished difference Result 5305 states and 8311 transitions. [2022-07-13 21:04:26,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:04:26,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-13 21:04:26,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:04:26,046 INFO L225 Difference]: With dead ends: 5305 [2022-07-13 21:04:26,046 INFO L226 Difference]: Without dead ends: 4279 [2022-07-13 21:04:26,047 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 21:04:26,048 INFO L413 NwaCegarLoop]: 1704 mSDtfsCounter, 1533 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:04:26,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 1846 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:04:26,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4279 states. [2022-07-13 21:04:26,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4279 to 4277. [2022-07-13 21:04:26,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4277 states, 4275 states have (on average 1.5618713450292399) internal successors, (6677), 4276 states have internal predecessors, (6677), 0 states have call successors, (0), 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 21:04:26,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4277 states to 4277 states and 6677 transitions. [2022-07-13 21:04:26,152 INFO L78 Accepts]: Start accepts. Automaton has 4277 states and 6677 transitions. Word has length 106 [2022-07-13 21:04:26,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:04:26,153 INFO L495 AbstractCegarLoop]: Abstraction has 4277 states and 6677 transitions. [2022-07-13 21:04:26,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 21:04:26,153 INFO L276 IsEmpty]: Start isEmpty. Operand 4277 states and 6677 transitions. [2022-07-13 21:04:26,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:04:26,154 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:04:26,154 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:26,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 21:04:26,155 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:04:26,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:04:26,155 INFO L85 PathProgramCache]: Analyzing trace with hash 732328407, now seen corresponding path program 1 times [2022-07-13 21:04:26,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:04:26,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250682296] [2022-07-13 21:04:26,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:04:26,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:04:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:04:26,266 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 21:04:26,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:04:26,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250682296] [2022-07-13 21:04:26,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250682296] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:04:26,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:04:26,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:04:26,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956811634] [2022-07-13 21:04:26,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:04:26,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:04:26,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:04:26,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:04:26,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:04:26,269 INFO L87 Difference]: Start difference. First operand 4277 states and 6677 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 21:04:26,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:04:26,407 INFO L93 Difference]: Finished difference Result 7993 states and 12471 transitions. [2022-07-13 21:04:26,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:04:26,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-13 21:04:26,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:04:26,423 INFO L225 Difference]: With dead ends: 7993 [2022-07-13 21:04:26,423 INFO L226 Difference]: Without dead ends: 6039 [2022-07-13 21:04:26,426 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 21:04:26,427 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 1529 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:04:26,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 1845 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:04:26,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6039 states. [2022-07-13 21:04:26,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6039 to 6037. [2022-07-13 21:04:26,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6037 states, 6035 states have (on average 1.5544324772162386) internal successors, (9381), 6036 states have internal predecessors, (9381), 0 states have call successors, (0), 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 21:04:26,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6037 states to 6037 states and 9381 transitions. [2022-07-13 21:04:26,616 INFO L78 Accepts]: Start accepts. Automaton has 6037 states and 9381 transitions. Word has length 106 [2022-07-13 21:04:26,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:04:26,616 INFO L495 AbstractCegarLoop]: Abstraction has 6037 states and 9381 transitions. [2022-07-13 21:04:26,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 21:04:26,616 INFO L276 IsEmpty]: Start isEmpty. Operand 6037 states and 9381 transitions. [2022-07-13 21:04:26,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:04:26,617 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:04:26,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:26,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 21:04:26,618 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:04:26,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:04:26,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1070121549, now seen corresponding path program 1 times [2022-07-13 21:04:26,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:04:26,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897556665] [2022-07-13 21:04:26,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:04:26,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:04:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:04:26,658 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 21:04:26,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:04:26,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897556665] [2022-07-13 21:04:26,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897556665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:04:26,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:04:26,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:04:26,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233158663] [2022-07-13 21:04:26,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:04:26,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:04:26,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:04:26,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:04:26,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:04:26,661 INFO L87 Difference]: Start difference. First operand 6037 states and 9381 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 21:04:26,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:04:26,921 INFO L93 Difference]: Finished difference Result 13081 states and 20263 transitions. [2022-07-13 21:04:26,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:04:26,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-13 21:04:26,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:04:26,937 INFO L225 Difference]: With dead ends: 13081 [2022-07-13 21:04:26,938 INFO L226 Difference]: Without dead ends: 9367 [2022-07-13 21:04:26,944 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 21:04:26,945 INFO L413 NwaCegarLoop]: 1694 mSDtfsCounter, 1525 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:04:26,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 1844 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:04:26,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9367 states. [2022-07-13 21:04:27,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9367 to 9365. [2022-07-13 21:04:27,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9365 states, 9363 states have (on average 1.54192032468226) internal successors, (14437), 9364 states have internal predecessors, (14437), 0 states have call successors, (0), 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 21:04:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9365 states to 9365 states and 14437 transitions. [2022-07-13 21:04:27,271 INFO L78 Accepts]: Start accepts. Automaton has 9365 states and 14437 transitions. Word has length 106 [2022-07-13 21:04:27,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:04:27,272 INFO L495 AbstractCegarLoop]: Abstraction has 9365 states and 14437 transitions. [2022-07-13 21:04:27,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 21:04:27,272 INFO L276 IsEmpty]: Start isEmpty. Operand 9365 states and 14437 transitions. [2022-07-13 21:04:27,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 21:04:27,273 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:04:27,273 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:27,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 21:04:27,274 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:04:27,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:04:27,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1478760321, now seen corresponding path program 1 times [2022-07-13 21:04:27,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:04:27,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086881586] [2022-07-13 21:04:27,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:04:27,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:04:27,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:04:27,367 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 21:04:27,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:04:27,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086881586] [2022-07-13 21:04:27,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086881586] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:04:27,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:04:27,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:04:27,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313249174] [2022-07-13 21:04:27,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:04:27,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:04:27,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:04:27,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:04:27,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:04:27,369 INFO L87 Difference]: Start difference. First operand 9365 states and 14437 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 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 21:04:31,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:04:31,677 INFO L93 Difference]: Finished difference Result 122037 states and 187509 transitions. [2022-07-13 21:04:31,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-13 21:04:31,678 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-07-13 21:04:31,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:04:31,902 INFO L225 Difference]: With dead ends: 122037 [2022-07-13 21:04:31,902 INFO L226 Difference]: Without dead ends: 114995 [2022-07-13 21:04:31,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-07-13 21:04:31,935 INFO L413 NwaCegarLoop]: 1626 mSDtfsCounter, 15488 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15488 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:04:31,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15488 Valid, 4869 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:04:32,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114995 states. [2022-07-13 21:04:33,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114995 to 16405. [2022-07-13 21:04:33,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16405 states, 16403 states have (on average 1.5239285496555508) internal successors, (24997), 16404 states have internal predecessors, (24997), 0 states have call successors, (0), 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 21:04:33,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16405 states to 16405 states and 24997 transitions. [2022-07-13 21:04:33,972 INFO L78 Accepts]: Start accepts. Automaton has 16405 states and 24997 transitions. Word has length 106 [2022-07-13 21:04:33,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:04:33,972 INFO L495 AbstractCegarLoop]: Abstraction has 16405 states and 24997 transitions. [2022-07-13 21:04:33,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 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 21:04:33,987 INFO L276 IsEmpty]: Start isEmpty. Operand 16405 states and 24997 transitions. [2022-07-13 21:04:33,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-13 21:04:33,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:04:33,989 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:33,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 21:04:33,990 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:04:33,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:04:33,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1961193007, now seen corresponding path program 1 times [2022-07-13 21:04:33,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:04:33,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963047455] [2022-07-13 21:04:33,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:04:33,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:04:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:04:34,051 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 21:04:34,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:04:34,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963047455] [2022-07-13 21:04:34,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963047455] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:04:34,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:04:34,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:04:34,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601896086] [2022-07-13 21:04:34,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:04:34,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:04:34,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:04:34,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:04:34,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:04:34,054 INFO L87 Difference]: Start difference. First operand 16405 states and 24997 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 21:04:35,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:04:35,913 INFO L93 Difference]: Finished difference Result 43161 states and 65319 transitions. [2022-07-13 21:04:35,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:04:35,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-13 21:04:35,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:04:35,963 INFO L225 Difference]: With dead ends: 43161 [2022-07-13 21:04:35,963 INFO L226 Difference]: Without dead ends: 29079 [2022-07-13 21:04:35,980 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 21:04:35,981 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 1516 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:04:35,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1744 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:04:35,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29079 states. [2022-07-13 21:04:38,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29079 to 28821. [2022-07-13 21:04:38,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28821 states, 28819 states have (on average 1.4936326728894131) internal successors, (43045), 28820 states have internal predecessors, (43045), 0 states have call successors, (0), 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 21:04:38,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28821 states to 28821 states and 43045 transitions. [2022-07-13 21:04:38,356 INFO L78 Accepts]: Start accepts. Automaton has 28821 states and 43045 transitions. Word has length 108 [2022-07-13 21:04:38,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:04:38,356 INFO L495 AbstractCegarLoop]: Abstraction has 28821 states and 43045 transitions. [2022-07-13 21:04:38,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 21:04:38,357 INFO L276 IsEmpty]: Start isEmpty. Operand 28821 states and 43045 transitions. [2022-07-13 21:04:38,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-13 21:04:38,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:04:38,358 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:38,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 21:04:38,358 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:04:38,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:04:38,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1894699495, now seen corresponding path program 1 times [2022-07-13 21:04:38,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:04:38,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687548207] [2022-07-13 21:04:38,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:04:38,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:04:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:04:38,568 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 21:04:38,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:04:38,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687548207] [2022-07-13 21:04:38,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687548207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:04:38,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:04:38,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:04:38,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655855721] [2022-07-13 21:04:38,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:04:38,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:04:38,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:04:38,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:04:38,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:04:38,570 INFO L87 Difference]: Start difference. First operand 28821 states and 43045 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 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 21:04:40,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:04:40,861 INFO L93 Difference]: Finished difference Result 55321 states and 82471 transitions. [2022-07-13 21:04:40,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:04:40,862 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-07-13 21:04:40,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:04:40,901 INFO L225 Difference]: With dead ends: 55321 [2022-07-13 21:04:40,902 INFO L226 Difference]: Without dead ends: 28823 [2022-07-13 21:04:40,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-07-13 21:04:40,929 INFO L413 NwaCegarLoop]: 1620 mSDtfsCounter, 2091 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:04:40,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2091 Valid, 2600 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:04:40,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28823 states. [2022-07-13 21:04:43,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28823 to 28821. [2022-07-13 21:04:43,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28821 states, 28819 states have (on average 1.4847496443318644) internal successors, (42789), 28820 states have internal predecessors, (42789), 0 states have call successors, (0), 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 21:04:43,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28821 states to 28821 states and 42789 transitions. [2022-07-13 21:04:43,139 INFO L78 Accepts]: Start accepts. Automaton has 28821 states and 42789 transitions. Word has length 108 [2022-07-13 21:04:43,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:04:43,139 INFO L495 AbstractCegarLoop]: Abstraction has 28821 states and 42789 transitions. [2022-07-13 21:04:43,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 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 21:04:43,140 INFO L276 IsEmpty]: Start isEmpty. Operand 28821 states and 42789 transitions. [2022-07-13 21:04:43,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 21:04:43,141 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:04:43,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:43,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 21:04:43,141 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:04:43,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:04:43,142 INFO L85 PathProgramCache]: Analyzing trace with hash 979135041, now seen corresponding path program 1 times [2022-07-13 21:04:43,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:04:43,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837434392] [2022-07-13 21:04:43,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:04:43,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:04:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:04:43,201 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 21:04:43,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:04:43,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837434392] [2022-07-13 21:04:43,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837434392] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:04:43,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:04:43,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:04:43,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934092120] [2022-07-13 21:04:43,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:04:43,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 21:04:43,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:04:43,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 21:04:43,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 21:04:43,203 INFO L87 Difference]: Start difference. First operand 28821 states and 42789 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 21:04:45,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:04:45,706 INFO L93 Difference]: Finished difference Result 55319 states and 81958 transitions. [2022-07-13 21:04:45,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 21:04:45,706 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-07-13 21:04:45,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:04:45,745 INFO L225 Difference]: With dead ends: 55319 [2022-07-13 21:04:45,745 INFO L226 Difference]: Without dead ends: 28821 [2022-07-13 21:04:45,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-13 21:04:45,772 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 4843 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4843 SdHoareTripleChecker+Valid, 3092 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:04:45,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4843 Valid, 3092 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:04:45,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28821 states. [2022-07-13 21:04:48,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28821 to 28821. [2022-07-13 21:04:48,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28821 states, 28819 states have (on average 1.4758666157743157) internal successors, (42533), 28820 states have internal predecessors, (42533), 0 states have call successors, (0), 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 21:04:48,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28821 states to 28821 states and 42533 transitions. [2022-07-13 21:04:48,186 INFO L78 Accepts]: Start accepts. Automaton has 28821 states and 42533 transitions. Word has length 109 [2022-07-13 21:04:48,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:04:48,186 INFO L495 AbstractCegarLoop]: Abstraction has 28821 states and 42533 transitions. [2022-07-13 21:04:48,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 21:04:48,187 INFO L276 IsEmpty]: Start isEmpty. Operand 28821 states and 42533 transitions. [2022-07-13 21:04:48,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 21:04:48,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:04:48,188 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:48,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 21:04:48,188 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:04:48,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:04:48,188 INFO L85 PathProgramCache]: Analyzing trace with hash 278070463, now seen corresponding path program 1 times [2022-07-13 21:04:48,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:04:48,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342315827] [2022-07-13 21:04:48,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:04:48,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:04:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:04:48,243 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 21:04:48,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:04:48,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342315827] [2022-07-13 21:04:48,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342315827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:04:48,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:04:48,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 21:04:48,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147009182] [2022-07-13 21:04:48,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:04:48,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 21:04:48,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:04:48,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 21:04:48,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 21:04:48,245 INFO L87 Difference]: Start difference. First operand 28821 states and 42533 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 21:04:51,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:04:51,966 INFO L93 Difference]: Finished difference Result 48447 states and 71002 transitions. [2022-07-13 21:04:51,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 21:04:51,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 109 [2022-07-13 21:04:51,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:04:52,030 INFO L225 Difference]: With dead ends: 48447 [2022-07-13 21:04:52,030 INFO L226 Difference]: Without dead ends: 48445 [2022-07-13 21:04:52,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 21:04:52,048 INFO L413 NwaCegarLoop]: 1688 mSDtfsCounter, 339 mSDsluCounter, 4889 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 6577 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:04:52,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 6577 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:04:52,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48445 states. [2022-07-13 21:04:54,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48445 to 29589. [2022-07-13 21:04:54,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29589 states, 29587 states have (on average 1.4591881569608274) internal successors, (43173), 29588 states have internal predecessors, (43173), 0 states have call successors, (0), 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 21:04:54,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29589 states to 29589 states and 43173 transitions. [2022-07-13 21:04:54,634 INFO L78 Accepts]: Start accepts. Automaton has 29589 states and 43173 transitions. Word has length 109 [2022-07-13 21:04:54,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:04:54,634 INFO L495 AbstractCegarLoop]: Abstraction has 29589 states and 43173 transitions. [2022-07-13 21:04:54,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 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 21:04:54,635 INFO L276 IsEmpty]: Start isEmpty. Operand 29589 states and 43173 transitions. [2022-07-13 21:04:54,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-13 21:04:54,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:04:54,636 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:54,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 21:04:54,637 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:04:54,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:04:54,637 INFO L85 PathProgramCache]: Analyzing trace with hash 171324818, now seen corresponding path program 1 times [2022-07-13 21:04:54,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:04:54,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163671307] [2022-07-13 21:04:54,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:04:54,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:04:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:04:54,721 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 21:04:54,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:04:54,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163671307] [2022-07-13 21:04:54,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163671307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:04:54,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:04:54,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:04:54,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929021805] [2022-07-13 21:04:54,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:04:54,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 21:04:54,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:04:54,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 21:04:54,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 21:04:54,723 INFO L87 Difference]: Start difference. First operand 29589 states and 43173 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 21:04:58,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:04:58,299 INFO L93 Difference]: Finished difference Result 57244 states and 83627 transitions. [2022-07-13 21:04:58,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 21:04:58,299 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-07-13 21:04:58,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:04:58,354 INFO L225 Difference]: With dead ends: 57244 [2022-07-13 21:04:58,354 INFO L226 Difference]: Without dead ends: 42393 [2022-07-13 21:04:58,370 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 21:04:58,371 INFO L413 NwaCegarLoop]: 1731 mSDtfsCounter, 1549 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 21:04:58,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 21:04:58,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42393 states. [2022-07-13 21:05:02,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42393 to 42391. [2022-07-13 21:05:02,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42391 states, 42389 states have (on average 1.4503526858383071) internal successors, (61479), 42390 states have internal predecessors, (61479), 0 states have call successors, (0), 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 21:05:02,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42391 states to 42391 states and 61479 transitions. [2022-07-13 21:05:02,184 INFO L78 Accepts]: Start accepts. Automaton has 42391 states and 61479 transitions. Word has length 110 [2022-07-13 21:05:02,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:05:02,184 INFO L495 AbstractCegarLoop]: Abstraction has 42391 states and 61479 transitions. [2022-07-13 21:05:02,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 21:05:02,184 INFO L276 IsEmpty]: Start isEmpty. Operand 42391 states and 61479 transitions. [2022-07-13 21:05:02,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-13 21:05:02,188 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:05:02,189 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, 2, 2, 2, 2, 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] [2022-07-13 21:05:02,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 21:05:02,189 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:05:02,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:05:02,189 INFO L85 PathProgramCache]: Analyzing trace with hash -720752691, now seen corresponding path program 1 times [2022-07-13 21:05:02,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:05:02,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852647461] [2022-07-13 21:05:02,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:05:02,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:05:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:05:02,258 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 21:05:02,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:05:02,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852647461] [2022-07-13 21:05:02,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852647461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:05:02,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:05:02,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 21:05:02,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767714749] [2022-07-13 21:05:02,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:05:02,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 21:05:02,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:05:02,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 21:05:02,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 21:05:02,260 INFO L87 Difference]: Start difference. First operand 42391 states and 61479 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 21:05:08,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:05:08,472 INFO L93 Difference]: Finished difference Result 46185 states and 67842 transitions. [2022-07-13 21:05:08,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 21:05:08,472 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-07-13 21:05:08,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:05:08,526 INFO L225 Difference]: With dead ends: 46185 [2022-07-13 21:05:08,526 INFO L226 Difference]: Without dead ends: 43893 [2022-07-13 21:05:08,540 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 21:05:08,542 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 879 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 3779 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 4443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 3779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 21:05:08,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 1072 Invalid, 4443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 3779 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 21:05:08,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43893 states. [2022-07-13 21:05:12,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43893 to 43142. [2022-07-13 21:05:12,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43142 states, 43140 states have (on average 1.442559109874826) internal successors, (62232), 43141 states have internal predecessors, (62232), 0 states have call successors, (0), 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 21:05:12,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43142 states to 43142 states and 62232 transitions. [2022-07-13 21:05:12,458 INFO L78 Accepts]: Start accepts. Automaton has 43142 states and 62232 transitions. Word has length 138 [2022-07-13 21:05:12,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:05:12,458 INFO L495 AbstractCegarLoop]: Abstraction has 43142 states and 62232 transitions. [2022-07-13 21:05:12,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 21:05:12,459 INFO L276 IsEmpty]: Start isEmpty. Operand 43142 states and 62232 transitions. [2022-07-13 21:05:12,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-13 21:05:12,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:05:12,475 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 21:05:12,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 21:05:12,475 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:05:12,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:05:12,476 INFO L85 PathProgramCache]: Analyzing trace with hash 635734382, now seen corresponding path program 1 times [2022-07-13 21:05:12,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:05:12,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791347760] [2022-07-13 21:05:12,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:05:12,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:05:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:05:12,575 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 21:05:12,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:05:12,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791347760] [2022-07-13 21:05:12,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791347760] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:05:12,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:05:12,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:05:12,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245829777] [2022-07-13 21:05:12,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:05:12,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:05:12,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:05:12,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:05:12,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:05:12,577 INFO L87 Difference]: Start difference. First operand 43142 states and 62232 transitions. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 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 21:05:43,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 21:05:43,331 INFO L93 Difference]: Finished difference Result 371352 states and 535841 transitions. [2022-07-13 21:05:43,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 21:05:43,331 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 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 149 [2022-07-13 21:05:43,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 21:05:44,093 INFO L225 Difference]: With dead ends: 371352 [2022-07-13 21:05:44,093 INFO L226 Difference]: Without dead ends: 331286 [2022-07-13 21:05:44,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-07-13 21:05:44,190 INFO L413 NwaCegarLoop]: 1699 mSDtfsCounter, 13005 mSDsluCounter, 2663 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13005 SdHoareTripleChecker+Valid, 4362 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 21:05:44,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13005 Valid, 4362 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 21:05:44,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331286 states. [2022-07-13 21:05:54,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331286 to 83206. [2022-07-13 21:05:54,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83206 states, 83204 states have (on average 1.4386808326522764) internal successors, (119704), 83205 states have internal predecessors, (119704), 0 states have call successors, (0), 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 21:05:55,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83206 states to 83206 states and 119704 transitions. [2022-07-13 21:05:55,055 INFO L78 Accepts]: Start accepts. Automaton has 83206 states and 119704 transitions. Word has length 149 [2022-07-13 21:05:55,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 21:05:55,056 INFO L495 AbstractCegarLoop]: Abstraction has 83206 states and 119704 transitions. [2022-07-13 21:05:55,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 10 states have internal predecessors, (138), 0 states have call successors, (0), 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 21:05:55,056 INFO L276 IsEmpty]: Start isEmpty. Operand 83206 states and 119704 transitions. [2022-07-13 21:05:55,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-13 21:05:55,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 21:05:55,072 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 21:05:55,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 21:05:55,073 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 21:05:55,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 21:05:55,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1133048434, now seen corresponding path program 1 times [2022-07-13 21:05:55,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 21:05:55,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079491095] [2022-07-13 21:05:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 21:05:55,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 21:05:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 21:05:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-13 21:05:55,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 21:05:55,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079491095] [2022-07-13 21:05:55,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079491095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 21:05:55,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 21:05:55,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 21:05:55,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842305461] [2022-07-13 21:05:55,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 21:05:55,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 21:05:55,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 21:05:55,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 21:05:55,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 21:05:55,169 INFO L87 Difference]: Start difference. First operand 83206 states and 119704 transitions. Second operand has 10 states, 10 states have (on average 13.9) internal successors, (139), 10 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)