./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem15_label52.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem15_label52.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 0f8565bc5543801b18fd72f9af86ccf360a9fe950b021c6b04fc8ab7186c8456 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 13:06:42,946 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 13:06:42,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 13:06:42,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 13:06:43,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 13:06:43,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 13:06:43,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 13:06:43,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 13:06:43,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 13:06:43,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 13:06:43,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 13:06:43,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 13:06:43,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 13:06:43,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 13:06:43,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 13:06:43,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 13:06:43,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 13:06:43,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 13:06:43,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 13:06:43,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 13:06:43,034 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 13:06:43,035 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 13:06:43,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 13:06:43,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 13:06:43,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 13:06:43,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 13:06:43,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 13:06:43,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 13:06:43,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 13:06:43,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 13:06:43,045 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 13:06:43,045 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 13:06:43,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 13:06:43,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 13:06:43,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 13:06:43,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 13:06:43,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 13:06:43,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 13:06:43,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 13:06:43,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 13:06:43,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 13:06:43,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 13:06:43,054 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 13:06:43,086 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 13:06:43,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 13:06:43,087 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 13:06:43,087 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 13:06:43,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 13:06:43,087 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 13:06:43,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 13:06:43,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 13:06:43,088 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 13:06:43,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 13:06:43,089 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 13:06:43,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 13:06:43,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 13:06:43,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 13:06:43,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 13:06:43,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 13:06:43,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 13:06:43,090 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 13:06:43,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 13:06:43,090 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 13:06:43,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 13:06:43,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 13:06:43,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 13:06:43,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 13:06:43,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 13:06:43,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 13:06:43,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 13:06:43,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 13:06:43,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 13:06:43,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 13:06:43,092 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 13:06:43,092 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 13:06:43,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 13:06:43,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f8565bc5543801b18fd72f9af86ccf360a9fe950b021c6b04fc8ab7186c8456 [2022-07-13 13:06:43,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 13:06:43,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 13:06:43,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 13:06:43,338 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 13:06:43,339 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 13:06:43,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem15_label52.c [2022-07-13 13:06:43,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48203ea51/2fe044979f894e8e976dd70c3e47e509/FLAG7a63f279d [2022-07-13 13:06:43,865 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 13:06:43,866 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label52.c [2022-07-13 13:06:43,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48203ea51/2fe044979f894e8e976dd70c3e47e509/FLAG7a63f279d [2022-07-13 13:06:44,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48203ea51/2fe044979f894e8e976dd70c3e47e509 [2022-07-13 13:06:44,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 13:06:44,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 13:06:44,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 13:06:44,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 13:06:44,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 13:06:44,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:06:44" (1/1) ... [2022-07-13 13:06:44,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3205e07f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:06:44, skipping insertion in model container [2022-07-13 13:06:44,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:06:44" (1/1) ... [2022-07-13 13:06:44,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 13:06:44,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 13:06:44,405 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label52.c[4872,4885] [2022-07-13 13:06:44,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 13:06:44,766 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 13:06:44,796 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem15_label52.c[4872,4885] [2022-07-13 13:06:44,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 13:06:44,954 INFO L208 MainTranslator]: Completed translation [2022-07-13 13:06:44,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:06:44 WrapperNode [2022-07-13 13:06:44,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 13:06:44,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 13:06:44,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 13:06:44,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 13:06:44,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:06:44" (1/1) ... [2022-07-13 13:06:45,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:06:44" (1/1) ... [2022-07-13 13:06:45,150 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1758 [2022-07-13 13:06:45,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 13:06:45,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 13:06:45,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 13:06:45,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 13:06:45,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:06:44" (1/1) ... [2022-07-13 13:06:45,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:06:44" (1/1) ... [2022-07-13 13:06:45,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:06:44" (1/1) ... [2022-07-13 13:06:45,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:06:44" (1/1) ... [2022-07-13 13:06:45,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:06:44" (1/1) ... [2022-07-13 13:06:45,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:06:44" (1/1) ... [2022-07-13 13:06:45,350 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:06:44" (1/1) ... [2022-07-13 13:06:45,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 13:06:45,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 13:06:45,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 13:06:45,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 13:06:45,374 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:06:44" (1/1) ... [2022-07-13 13:06:45,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 13:06:45,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:06:45,404 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 13:06:45,431 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 13:06:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 13:06:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 13:06:45,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 13:06:45,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 13:06:45,510 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 13:06:45,512 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 13:06:47,873 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 13:06:47,882 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 13:06:47,882 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 13:06:47,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:06:47 BoogieIcfgContainer [2022-07-13 13:06:47,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 13:06:47,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 13:06:47,887 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 13:06:47,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 13:06:47,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 01:06:44" (1/3) ... [2022-07-13 13:06:47,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57843ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 01:06:47, skipping insertion in model container [2022-07-13 13:06:47,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:06:44" (2/3) ... [2022-07-13 13:06:47,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57843ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 01:06:47, skipping insertion in model container [2022-07-13 13:06:47,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:06:47" (3/3) ... [2022-07-13 13:06:47,892 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label52.c [2022-07-13 13:06:47,905 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 13:06:47,905 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 13:06:47,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 13:06:47,989 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@750a8033, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2221067b [2022-07-13 13:06:47,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 13:06:48,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 13:06:48,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-13 13:06:48,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:06:48,013 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] [2022-07-13 13:06:48,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:06:48,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:06:48,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1453294289, now seen corresponding path program 1 times [2022-07-13 13:06:48,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:06:48,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005667854] [2022-07-13 13:06:48,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:06:48,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:06:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:06:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 13:06:48,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:06:48,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005667854] [2022-07-13 13:06:48,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005667854] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:06:48,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:06:48,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 13:06:48,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142201374] [2022-07-13 13:06:48,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:06:48,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:06:48,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:06:48,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:06:48,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:06:48,352 INFO L87 Difference]: Start difference. First operand has 424 states, 422 states have (on average 1.7772511848341233) internal successors, (750), 423 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 13:06:50,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:06:50,590 INFO L93 Difference]: Finished difference Result 1154 states and 2106 transitions. [2022-07-13 13:06:50,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:06:50,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-07-13 13:06:50,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:06:50,606 INFO L225 Difference]: With dead ends: 1154 [2022-07-13 13:06:50,606 INFO L226 Difference]: Without dead ends: 665 [2022-07-13 13:06:50,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:06:50,613 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 282 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 976 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 1230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-13 13:06:50,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 383 Invalid, 1230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 976 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-13 13:06:50,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-07-13 13:06:50,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 663. [2022-07-13 13:06:50,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 1.4818731117824773) internal successors, (981), 662 states have internal predecessors, (981), 0 states have call successors, (0), 0 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 13:06:50,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 981 transitions. [2022-07-13 13:06:50,680 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 981 transitions. Word has length 39 [2022-07-13 13:06:50,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:06:50,681 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 981 transitions. [2022-07-13 13:06:50,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 13:06:50,681 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 981 transitions. [2022-07-13 13:06:50,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 13:06:50,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:06:50,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:06:50,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 13:06:50,685 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:06:50,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:06:50,686 INFO L85 PathProgramCache]: Analyzing trace with hash -2072578409, now seen corresponding path program 1 times [2022-07-13 13:06:50,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:06:50,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671678252] [2022-07-13 13:06:50,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:06:50,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:06:50,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:06:50,805 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 13:06:50,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:06:50,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671678252] [2022-07-13 13:06:50,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671678252] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:06:50,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:06:50,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 13:06:50,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747066426] [2022-07-13 13:06:50,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:06:50,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:06:50,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:06:50,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:06:50,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:06:50,809 INFO L87 Difference]: Start difference. First operand 663 states and 981 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 13:06:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:06:52,120 INFO L93 Difference]: Finished difference Result 1624 states and 2315 transitions. [2022-07-13 13:06:52,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:06:52,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-07-13 13:06:52,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:06:52,125 INFO L225 Difference]: With dead ends: 1624 [2022-07-13 13:06:52,125 INFO L226 Difference]: Without dead ends: 963 [2022-07-13 13:06:52,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:06:52,128 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 237 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 910 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 13:06:52,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 337 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 910 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 13:06:52,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-07-13 13:06:52,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2022-07-13 13:06:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 962 states have (on average 1.362785862785863) internal successors, (1311), 962 states have internal predecessors, (1311), 0 states have call successors, (0), 0 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 13:06:52,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1311 transitions. [2022-07-13 13:06:52,161 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1311 transitions. Word has length 104 [2022-07-13 13:06:52,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:06:52,162 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1311 transitions. [2022-07-13 13:06:52,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 2 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 13:06:52,162 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1311 transitions. [2022-07-13 13:06:52,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 13:06:52,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:06:52,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:06:52,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 13:06:52,165 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:06:52,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:06:52,166 INFO L85 PathProgramCache]: Analyzing trace with hash 310857094, now seen corresponding path program 1 times [2022-07-13 13:06:52,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:06:52,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032262376] [2022-07-13 13:06:52,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:06:52,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:06:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:06:52,310 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 13:06:52,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:06:52,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032262376] [2022-07-13 13:06:52,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032262376] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:06:52,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:06:52,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 13:06:52,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900555315] [2022-07-13 13:06:52,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:06:52,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 13:06:52,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:06:52,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 13:06:52,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 13:06:52,314 INFO L87 Difference]: Start difference. First operand 963 states and 1311 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 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 13:06:54,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:06:54,402 INFO L93 Difference]: Finished difference Result 2244 states and 3201 transitions. [2022-07-13 13:06:54,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 13:06:54,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 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 13:06:54,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:06:54,412 INFO L225 Difference]: With dead ends: 2244 [2022-07-13 13:06:54,413 INFO L226 Difference]: Without dead ends: 1582 [2022-07-13 13:06:54,414 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 13:06:54,415 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 362 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 2146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-13 13:06:54,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 365 Invalid, 2146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-13 13:06:54,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2022-07-13 13:06:54,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1266. [2022-07-13 13:06:54,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 1265 states have (on average 1.3043478260869565) internal successors, (1650), 1265 states have internal predecessors, (1650), 0 states have call successors, (0), 0 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 13:06:54,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1650 transitions. [2022-07-13 13:06:54,441 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1650 transitions. Word has length 109 [2022-07-13 13:06:54,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:06:54,442 INFO L495 AbstractCegarLoop]: Abstraction has 1266 states and 1650 transitions. [2022-07-13 13:06:54,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 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 13:06:54,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1650 transitions. [2022-07-13 13:06:54,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-13 13:06:54,446 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:06:54,446 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:06:54,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 13:06:54,446 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:06:54,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:06:54,447 INFO L85 PathProgramCache]: Analyzing trace with hash -793515486, now seen corresponding path program 1 times [2022-07-13 13:06:54,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:06:54,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411368508] [2022-07-13 13:06:54,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:06:54,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:06:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:06:54,646 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 13:06:54,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:06:54,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411368508] [2022-07-13 13:06:54,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411368508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:06:54,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:06:54,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:06:54,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970705651] [2022-07-13 13:06:54,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:06:54,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 13:06:54,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:06:54,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 13:06:54,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:06:54,650 INFO L87 Difference]: Start difference. First operand 1266 states and 1650 transitions. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 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 13:06:57,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:06:57,415 INFO L93 Difference]: Finished difference Result 4670 states and 6170 transitions. [2022-07-13 13:06:57,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 13:06:57,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 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 205 [2022-07-13 13:06:57,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:06:57,429 INFO L225 Difference]: With dead ends: 4670 [2022-07-13 13:06:57,429 INFO L226 Difference]: Without dead ends: 3406 [2022-07-13 13:06:57,431 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 13:06:57,432 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 490 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 1955 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 2239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 1955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-13 13:06:57,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 348 Invalid, 2239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 1955 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-13 13:06:57,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3406 states. [2022-07-13 13:06:57,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3406 to 3381. [2022-07-13 13:06:57,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3381 states, 3380 states have (on average 1.2366863905325445) internal successors, (4180), 3380 states have internal predecessors, (4180), 0 states have call successors, (0), 0 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 13:06:57,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3381 states to 3381 states and 4180 transitions. [2022-07-13 13:06:57,488 INFO L78 Accepts]: Start accepts. Automaton has 3381 states and 4180 transitions. Word has length 205 [2022-07-13 13:06:57,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:06:57,489 INFO L495 AbstractCegarLoop]: Abstraction has 3381 states and 4180 transitions. [2022-07-13 13:06:57,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 3 states have internal predecessors, (205), 0 states have call successors, (0), 0 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 13:06:57,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3381 states and 4180 transitions. [2022-07-13 13:06:57,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-13 13:06:57,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:06:57,493 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:06:57,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 13:06:57,493 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:06:57,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:06:57,494 INFO L85 PathProgramCache]: Analyzing trace with hash -792100692, now seen corresponding path program 1 times [2022-07-13 13:06:57,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:06:57,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233250748] [2022-07-13 13:06:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:06:57,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:06:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:06:57,639 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-13 13:06:57,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:06:57,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233250748] [2022-07-13 13:06:57,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233250748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:06:57,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:06:57,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 13:06:57,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722282156] [2022-07-13 13:06:57,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:06:57,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:06:57,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:06:57,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:06:57,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:06:57,644 INFO L87 Difference]: Start difference. First operand 3381 states and 4180 transitions. Second operand has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 13:06:58,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:06:58,985 INFO L93 Difference]: Finished difference Result 8563 states and 10754 transitions. [2022-07-13 13:06:58,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:06:58,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 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 209 [2022-07-13 13:06:58,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:06:59,004 INFO L225 Difference]: With dead ends: 8563 [2022-07-13 13:06:59,005 INFO L226 Difference]: Without dead ends: 5483 [2022-07-13 13:06:59,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:06:59,009 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 257 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 13:06:59,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 339 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 791 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 13:06:59,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5483 states. [2022-07-13 13:06:59,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5483 to 5478. [2022-07-13 13:06:59,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5478 states, 5477 states have (on average 1.16870549570933) internal successors, (6401), 5477 states have internal predecessors, (6401), 0 states have call successors, (0), 0 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 13:06:59,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 6401 transitions. [2022-07-13 13:06:59,105 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 6401 transitions. Word has length 209 [2022-07-13 13:06:59,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:06:59,107 INFO L495 AbstractCegarLoop]: Abstraction has 5478 states and 6401 transitions. [2022-07-13 13:06:59,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.0) internal successors, (132), 2 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 13:06:59,110 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 6401 transitions. [2022-07-13 13:06:59,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2022-07-13 13:06:59,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:06:59,115 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:06:59,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 13:06:59,117 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:06:59,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:06:59,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1757201092, now seen corresponding path program 1 times [2022-07-13 13:06:59,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:06:59,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934851074] [2022-07-13 13:06:59,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:06:59,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:06:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:06:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-13 13:06:59,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:06:59,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934851074] [2022-07-13 13:06:59,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934851074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:06:59,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:06:59,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 13:06:59,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555009307] [2022-07-13 13:06:59,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:06:59,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:06:59,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:06:59,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:06:59,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:06:59,308 INFO L87 Difference]: Start difference. First operand 5478 states and 6401 transitions. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 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 13:07:00,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:07:00,854 INFO L93 Difference]: Finished difference Result 10655 states and 12489 transitions. [2022-07-13 13:07:00,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:07:00,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 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 311 [2022-07-13 13:07:00,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:07:00,872 INFO L225 Difference]: With dead ends: 10655 [2022-07-13 13:07:00,872 INFO L226 Difference]: Without dead ends: 5478 [2022-07-13 13:07:00,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:07:00,879 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 105 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 13:07:00,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 359 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 13:07:00,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5478 states. [2022-07-13 13:07:00,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5478 to 5478. [2022-07-13 13:07:00,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5478 states, 5477 states have (on average 1.1676100054774512) internal successors, (6395), 5477 states have internal predecessors, (6395), 0 states have call successors, (0), 0 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 13:07:00,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 6395 transitions. [2022-07-13 13:07:00,970 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 6395 transitions. Word has length 311 [2022-07-13 13:07:00,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:07:00,971 INFO L495 AbstractCegarLoop]: Abstraction has 5478 states and 6395 transitions. [2022-07-13 13:07:00,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 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 13:07:00,972 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 6395 transitions. [2022-07-13 13:07:00,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2022-07-13 13:07:00,976 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:07:00,976 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:00,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 13:07:00,977 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:07:00,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:07:00,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1941377461, now seen corresponding path program 1 times [2022-07-13 13:07:00,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:07:00,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194158698] [2022-07-13 13:07:00,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:00,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:07:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-13 13:07:01,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:07:01,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194158698] [2022-07-13 13:07:01,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194158698] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:07:01,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:07:01,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:07:01,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708464392] [2022-07-13 13:07:01,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:07:01,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:07:01,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:07:01,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:07:01,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:07:01,122 INFO L87 Difference]: Start difference. First operand 5478 states and 6395 transitions. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 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 13:07:02,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:07:02,834 INFO L93 Difference]: Finished difference Result 11851 states and 14151 transitions. [2022-07-13 13:07:02,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:07:02,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 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 326 [2022-07-13 13:07:02,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:07:02,853 INFO L225 Difference]: With dead ends: 11851 [2022-07-13 13:07:02,854 INFO L226 Difference]: Without dead ends: 6674 [2022-07-13 13:07:02,861 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 13:07:02,862 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 276 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-13 13:07:02,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 322 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-07-13 13:07:02,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6674 states. [2022-07-13 13:07:02,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6674 to 4876. [2022-07-13 13:07:02,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4876 states, 4875 states have (on average 1.1805128205128206) internal successors, (5755), 4875 states have internal predecessors, (5755), 0 states have call successors, (0), 0 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 13:07:02,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4876 states to 4876 states and 5755 transitions. [2022-07-13 13:07:02,945 INFO L78 Accepts]: Start accepts. Automaton has 4876 states and 5755 transitions. Word has length 326 [2022-07-13 13:07:02,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:07:02,946 INFO L495 AbstractCegarLoop]: Abstraction has 4876 states and 5755 transitions. [2022-07-13 13:07:02,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 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 13:07:02,946 INFO L276 IsEmpty]: Start isEmpty. Operand 4876 states and 5755 transitions. [2022-07-13 13:07:02,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2022-07-13 13:07:02,951 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:07:02,952 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:02,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 13:07:02,952 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:07:02,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:07:02,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1988464242, now seen corresponding path program 1 times [2022-07-13 13:07:02,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:07:02,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488480143] [2022-07-13 13:07:02,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:02,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:07:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:03,325 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 73 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 13:07:03,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:07:03,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488480143] [2022-07-13 13:07:03,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488480143] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 13:07:03,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155770133] [2022-07-13 13:07:03,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:03,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:07:03,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:07:03,332 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 13:07:03,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 13:07:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:03,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 13:07:03,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 13:07:03,687 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 13:07:03,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 13:07:03,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155770133] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:07:03,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 13:07:03,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-07-13 13:07:03,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319282724] [2022-07-13 13:07:03,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:07:03,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:07:03,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:07:03,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:07:03,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 13:07:03,690 INFO L87 Difference]: Start difference. First operand 4876 states and 5755 transitions. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 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 13:07:05,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:07:05,214 INFO L93 Difference]: Finished difference Result 11855 states and 14250 transitions. [2022-07-13 13:07:05,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:07:05,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 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 385 [2022-07-13 13:07:05,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:07:05,237 INFO L225 Difference]: With dead ends: 11855 [2022-07-13 13:07:05,238 INFO L226 Difference]: Without dead ends: 7280 [2022-07-13 13:07:05,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-13 13:07:05,245 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 249 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 13:07:05,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 345 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 13:07:05,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7280 states. [2022-07-13 13:07:05,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7280 to 6679. [2022-07-13 13:07:05,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6679 states, 6678 states have (on average 1.1647199760407307) internal successors, (7778), 6678 states have internal predecessors, (7778), 0 states have call successors, (0), 0 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 13:07:05,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6679 states to 6679 states and 7778 transitions. [2022-07-13 13:07:05,364 INFO L78 Accepts]: Start accepts. Automaton has 6679 states and 7778 transitions. Word has length 385 [2022-07-13 13:07:05,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:07:05,365 INFO L495 AbstractCegarLoop]: Abstraction has 6679 states and 7778 transitions. [2022-07-13 13:07:05,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 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 13:07:05,365 INFO L276 IsEmpty]: Start isEmpty. Operand 6679 states and 7778 transitions. [2022-07-13 13:07:05,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2022-07-13 13:07:05,371 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:07:05,372 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:07:05,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 13:07:05,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:07:05,587 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:07:05,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:07:05,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1876663847, now seen corresponding path program 1 times [2022-07-13 13:07:05,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:07:05,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563277011] [2022-07-13 13:07:05,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:05,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:07:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:05,789 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 275 proven. 39 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-13 13:07:05,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:07:05,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563277011] [2022-07-13 13:07:05,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563277011] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 13:07:05,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400315036] [2022-07-13 13:07:05,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:05,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:07:05,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:07:05,793 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 13:07:05,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 13:07:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:05,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 13:07:05,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 13:07:06,679 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 275 proven. 39 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-13 13:07:06,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 13:07:07,251 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 275 proven. 39 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-13 13:07:07,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400315036] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 13:07:07,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 13:07:07,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-07-13 13:07:07,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590525787] [2022-07-13 13:07:07,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 13:07:07,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 13:07:07,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:07:07,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 13:07:07,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-13 13:07:07,255 INFO L87 Difference]: Start difference. First operand 6679 states and 7778 transitions. Second operand has 9 states, 9 states have (on average 72.66666666666667) internal successors, (654), 8 states have internal predecessors, (654), 0 states have call successors, (0), 0 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 13:07:13,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:07:13,207 INFO L93 Difference]: Finished difference Result 19597 states and 22611 transitions. [2022-07-13 13:07:13,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 13:07:13,207 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 72.66666666666667) internal successors, (654), 8 states have internal predecessors, (654), 0 states have call successors, (0), 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 402 [2022-07-13 13:07:13,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:07:13,224 INFO L225 Difference]: With dead ends: 19597 [2022-07-13 13:07:13,224 INFO L226 Difference]: Without dead ends: 7876 [2022-07-13 13:07:13,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 798 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=151, Unknown=0, NotChecked=0, Total=240 [2022-07-13 13:07:13,233 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 2436 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 7078 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2436 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 7734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 7078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-13 13:07:13,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2436 Valid, 335 Invalid, 7734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 7078 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-13 13:07:13,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7876 states. [2022-07-13 13:07:13,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7876 to 6976. [2022-07-13 13:07:13,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6976 states, 6975 states have (on average 1.1105376344086022) internal successors, (7746), 6975 states have internal predecessors, (7746), 0 states have call successors, (0), 0 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 13:07:13,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6976 states to 6976 states and 7746 transitions. [2022-07-13 13:07:13,318 INFO L78 Accepts]: Start accepts. Automaton has 6976 states and 7746 transitions. Word has length 402 [2022-07-13 13:07:13,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:07:13,318 INFO L495 AbstractCegarLoop]: Abstraction has 6976 states and 7746 transitions. [2022-07-13 13:07:13,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 72.66666666666667) internal successors, (654), 8 states have internal predecessors, (654), 0 states have call successors, (0), 0 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 13:07:13,319 INFO L276 IsEmpty]: Start isEmpty. Operand 6976 states and 7746 transitions. [2022-07-13 13:07:13,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2022-07-13 13:07:13,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:07:13,324 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:13,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 13:07:13,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-13 13:07:13,540 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:07:13,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:07:13,540 INFO L85 PathProgramCache]: Analyzing trace with hash 429176728, now seen corresponding path program 1 times [2022-07-13 13:07:13,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:07:13,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712112402] [2022-07-13 13:07:13,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:13,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:07:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:13,760 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-13 13:07:13,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:07:13,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712112402] [2022-07-13 13:07:13,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712112402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:07:13,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:07:13,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:07:13,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796782428] [2022-07-13 13:07:13,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:07:13,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:07:13,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:07:13,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:07:13,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:07:13,763 INFO L87 Difference]: Start difference. First operand 6976 states and 7746 transitions. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 13:07:14,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:07:14,782 INFO L93 Difference]: Finished difference Result 15446 states and 17263 transitions. [2022-07-13 13:07:14,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:07:14,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 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 416 [2022-07-13 13:07:14,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:07:14,800 INFO L225 Difference]: With dead ends: 15446 [2022-07-13 13:07:14,800 INFO L226 Difference]: Without dead ends: 8472 [2022-07-13 13:07:14,807 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 13:07:14,808 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 287 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 13:07:14,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 554 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 13:07:14,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8472 states. [2022-07-13 13:07:14,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8472 to 8171. [2022-07-13 13:07:14,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8171 states, 8170 states have (on average 1.088984088127295) internal successors, (8897), 8170 states have internal predecessors, (8897), 0 states have call successors, (0), 0 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 13:07:14,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8171 states to 8171 states and 8897 transitions. [2022-07-13 13:07:14,902 INFO L78 Accepts]: Start accepts. Automaton has 8171 states and 8897 transitions. Word has length 416 [2022-07-13 13:07:14,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:07:14,903 INFO L495 AbstractCegarLoop]: Abstraction has 8171 states and 8897 transitions. [2022-07-13 13:07:14,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 13:07:14,903 INFO L276 IsEmpty]: Start isEmpty. Operand 8171 states and 8897 transitions. [2022-07-13 13:07:14,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2022-07-13 13:07:14,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:07:14,907 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:07:14,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 13:07:14,908 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:07:14,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:07:14,908 INFO L85 PathProgramCache]: Analyzing trace with hash 806528277, now seen corresponding path program 1 times [2022-07-13 13:07:14,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:07:14,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83821377] [2022-07-13 13:07:14,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:14,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:07:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:15,159 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 303 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-13 13:07:15,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:07:15,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83821377] [2022-07-13 13:07:15,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83821377] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:07:15,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:07:15,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:07:15,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747767825] [2022-07-13 13:07:15,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:07:15,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:07:15,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:07:15,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:07:15,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:07:15,162 INFO L87 Difference]: Start difference. First operand 8171 states and 8897 transitions. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 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 13:07:16,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:07:16,126 INFO L93 Difference]: Finished difference Result 18736 states and 20446 transitions. [2022-07-13 13:07:16,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:07:16,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 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 513 [2022-07-13 13:07:16,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:07:16,143 INFO L225 Difference]: With dead ends: 18736 [2022-07-13 13:07:16,143 INFO L226 Difference]: Without dead ends: 10567 [2022-07-13 13:07:16,151 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 13:07:16,153 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 244 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 13:07:16,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 512 Invalid, 903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 13:07:16,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10567 states. [2022-07-13 13:07:16,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10567 to 10567. [2022-07-13 13:07:16,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10567 states, 10566 states have (on average 1.0712663259511641) internal successors, (11319), 10566 states have internal predecessors, (11319), 0 states have call successors, (0), 0 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 13:07:16,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10567 states to 10567 states and 11319 transitions. [2022-07-13 13:07:16,271 INFO L78 Accepts]: Start accepts. Automaton has 10567 states and 11319 transitions. Word has length 513 [2022-07-13 13:07:16,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:07:16,273 INFO L495 AbstractCegarLoop]: Abstraction has 10567 states and 11319 transitions. [2022-07-13 13:07:16,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 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 13:07:16,273 INFO L276 IsEmpty]: Start isEmpty. Operand 10567 states and 11319 transitions. [2022-07-13 13:07:16,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2022-07-13 13:07:16,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:07:16,280 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:07:16,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 13:07:16,281 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:07:16,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:07:16,281 INFO L85 PathProgramCache]: Analyzing trace with hash -828305129, now seen corresponding path program 1 times [2022-07-13 13:07:16,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:07:16,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926133228] [2022-07-13 13:07:16,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:16,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:07:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 446 backedges. 340 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-13 13:07:16,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:07:16,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926133228] [2022-07-13 13:07:16,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926133228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:07:16,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:07:16,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:07:16,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661037153] [2022-07-13 13:07:16,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:07:16,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:07:16,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:07:16,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:07:16,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:07:16,528 INFO L87 Difference]: Start difference. First operand 10567 states and 11319 transitions. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 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 13:07:17,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:07:17,503 INFO L93 Difference]: Finished difference Result 25617 states and 27608 transitions. [2022-07-13 13:07:17,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:07:17,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 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 540 [2022-07-13 13:07:17,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:07:17,527 INFO L225 Difference]: With dead ends: 25617 [2022-07-13 13:07:17,527 INFO L226 Difference]: Without dead ends: 15351 [2022-07-13 13:07:17,538 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 13:07:17,539 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 248 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 13:07:17,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 128 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 13:07:17,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15351 states. [2022-07-13 13:07:17,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15351 to 14454. [2022-07-13 13:07:17,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14454 states, 14453 states have (on average 1.0723725178163703) internal successors, (15499), 14453 states have internal predecessors, (15499), 0 states have call successors, (0), 0 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 13:07:17,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14454 states to 14454 states and 15499 transitions. [2022-07-13 13:07:17,752 INFO L78 Accepts]: Start accepts. Automaton has 14454 states and 15499 transitions. Word has length 540 [2022-07-13 13:07:17,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:07:17,753 INFO L495 AbstractCegarLoop]: Abstraction has 14454 states and 15499 transitions. [2022-07-13 13:07:17,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 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 13:07:17,754 INFO L276 IsEmpty]: Start isEmpty. Operand 14454 states and 15499 transitions. [2022-07-13 13:07:17,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2022-07-13 13:07:17,760 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:07:17,761 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:07:17,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 13:07:17,761 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:07:17,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:07:17,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1301515125, now seen corresponding path program 1 times [2022-07-13 13:07:17,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:07:17,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766563921] [2022-07-13 13:07:17,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:17,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:07:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 445 proven. 119 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-07-13 13:07:18,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:07:18,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766563921] [2022-07-13 13:07:18,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766563921] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 13:07:18,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613045791] [2022-07-13 13:07:18,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:18,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:07:18,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:07:18,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 13:07:18,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 13:07:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:18,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 13:07:18,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 13:07:20,462 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 445 proven. 150 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-07-13 13:07:20,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 13:07:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2022-07-13 13:07:20,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613045791] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 13:07:20,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 13:07:20,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 5] total 9 [2022-07-13 13:07:20,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84908399] [2022-07-13 13:07:20,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:07:20,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:07:20,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:07:20,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:07:20,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-13 13:07:20,603 INFO L87 Difference]: Start difference. First operand 14454 states and 15499 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:07:21,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:07:21,659 INFO L93 Difference]: Finished difference Result 33699 states and 36198 transitions. [2022-07-13 13:07:21,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:07:21,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 685 [2022-07-13 13:07:21,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:07:21,688 INFO L225 Difference]: With dead ends: 33699 [2022-07-13 13:07:21,689 INFO L226 Difference]: Without dead ends: 19247 [2022-07-13 13:07:21,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1373 GetRequests, 1366 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-13 13:07:21,702 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 306 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 13:07:21,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 431 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 13:07:21,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19247 states. [2022-07-13 13:07:21,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19247 to 18041. [2022-07-13 13:07:21,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18041 states, 18040 states have (on average 1.0663525498891353) internal successors, (19237), 18040 states have internal predecessors, (19237), 0 states have call successors, (0), 0 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 13:07:21,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18041 states to 18041 states and 19237 transitions. [2022-07-13 13:07:21,909 INFO L78 Accepts]: Start accepts. Automaton has 18041 states and 19237 transitions. Word has length 685 [2022-07-13 13:07:21,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:07:21,910 INFO L495 AbstractCegarLoop]: Abstraction has 18041 states and 19237 transitions. [2022-07-13 13:07:21,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:07:21,910 INFO L276 IsEmpty]: Start isEmpty. Operand 18041 states and 19237 transitions. [2022-07-13 13:07:21,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 699 [2022-07-13 13:07:21,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:07:21,918 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:07:21,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 13:07:22,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:07:22,142 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:07:22,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:07:22,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1831700796, now seen corresponding path program 1 times [2022-07-13 13:07:22,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:07:22,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591345121] [2022-07-13 13:07:22,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:22,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:07:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:22,571 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 547 proven. 74 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-07-13 13:07:22,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:07:22,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591345121] [2022-07-13 13:07:22,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591345121] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 13:07:22,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484334806] [2022-07-13 13:07:22,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:22,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:07:22,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:07:22,574 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 13:07:22,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 13:07:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:22,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-13 13:07:22,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 13:07:23,216 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 545 proven. 76 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-07-13 13:07:23,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 13:07:23,971 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 470 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2022-07-13 13:07:23,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484334806] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 13:07:23,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 13:07:23,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 4] total 8 [2022-07-13 13:07:23,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535057779] [2022-07-13 13:07:23,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:07:23,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:07:23,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:07:23,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:07:23,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 13:07:23,974 INFO L87 Difference]: Start difference. First operand 18041 states and 19237 transitions. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 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 13:07:25,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:07:25,021 INFO L93 Difference]: Finished difference Result 39674 states and 42398 transitions. [2022-07-13 13:07:25,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:07:25,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 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 698 [2022-07-13 13:07:25,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:07:25,056 INFO L225 Difference]: With dead ends: 39674 [2022-07-13 13:07:25,057 INFO L226 Difference]: Without dead ends: 21635 [2022-07-13 13:07:25,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1400 GetRequests, 1394 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-13 13:07:25,069 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 227 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 13:07:25,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 88 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 13:07:25,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21635 states. [2022-07-13 13:07:25,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21635 to 20733. [2022-07-13 13:07:25,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20733 states, 20732 states have (on average 1.0679625699401891) internal successors, (22141), 20732 states have internal predecessors, (22141), 0 states have call successors, (0), 0 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 13:07:25,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20733 states to 20733 states and 22141 transitions. [2022-07-13 13:07:25,330 INFO L78 Accepts]: Start accepts. Automaton has 20733 states and 22141 transitions. Word has length 698 [2022-07-13 13:07:25,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:07:25,330 INFO L495 AbstractCegarLoop]: Abstraction has 20733 states and 22141 transitions. [2022-07-13 13:07:25,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 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 13:07:25,331 INFO L276 IsEmpty]: Start isEmpty. Operand 20733 states and 22141 transitions. [2022-07-13 13:07:25,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 711 [2022-07-13 13:07:25,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:07:25,346 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:25,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 13:07:25,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:07:25,559 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:07:25,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:07:25,559 INFO L85 PathProgramCache]: Analyzing trace with hash -554604450, now seen corresponding path program 1 times [2022-07-13 13:07:25,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:07:25,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645803749] [2022-07-13 13:07:25,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:25,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:07:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:25,849 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 736 trivial. 0 not checked. [2022-07-13 13:07:25,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:07:25,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645803749] [2022-07-13 13:07:25,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645803749] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:07:25,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:07:25,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:07:25,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438052301] [2022-07-13 13:07:25,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:07:25,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:07:25,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:07:25,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:07:25,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:07:25,852 INFO L87 Difference]: Start difference. First operand 20733 states and 22141 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:07:26,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:07:26,830 INFO L93 Difference]: Finished difference Result 43565 states and 46452 transitions. [2022-07-13 13:07:26,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:07:26,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 710 [2022-07-13 13:07:26,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:07:26,850 INFO L225 Difference]: With dead ends: 43565 [2022-07-13 13:07:26,850 INFO L226 Difference]: Without dead ends: 22834 [2022-07-13 13:07:26,864 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 13:07:26,865 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 270 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 13:07:26,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 520 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 13:07:26,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22834 states. [2022-07-13 13:07:27,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22834 to 21635. [2022-07-13 13:07:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21635 states, 21634 states have (on average 1.0658223167236758) internal successors, (23058), 21634 states have internal predecessors, (23058), 0 states have call successors, (0), 0 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 13:07:27,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21635 states to 21635 states and 23058 transitions. [2022-07-13 13:07:27,123 INFO L78 Accepts]: Start accepts. Automaton has 21635 states and 23058 transitions. Word has length 710 [2022-07-13 13:07:27,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:07:27,124 INFO L495 AbstractCegarLoop]: Abstraction has 21635 states and 23058 transitions. [2022-07-13 13:07:27,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:07:27,124 INFO L276 IsEmpty]: Start isEmpty. Operand 21635 states and 23058 transitions. [2022-07-13 13:07:27,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2022-07-13 13:07:27,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:07:27,135 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:07:27,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 13:07:27,136 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:07:27,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:07:27,136 INFO L85 PathProgramCache]: Analyzing trace with hash 355388179, now seen corresponding path program 1 times [2022-07-13 13:07:27,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:07:27,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747979084] [2022-07-13 13:07:27,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:27,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:07:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 522 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2022-07-13 13:07:27,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:07:27,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747979084] [2022-07-13 13:07:27,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747979084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:07:27,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:07:27,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:07:27,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874325194] [2022-07-13 13:07:27,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:07:27,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:07:27,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:07:27,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:07:27,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:07:27,482 INFO L87 Difference]: Start difference. First operand 21635 states and 23058 transitions. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 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 13:07:28,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:07:28,277 INFO L93 Difference]: Finished difference Result 42971 states and 45817 transitions. [2022-07-13 13:07:28,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:07:28,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 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 724 [2022-07-13 13:07:28,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:07:28,299 INFO L225 Difference]: With dead ends: 42971 [2022-07-13 13:07:28,299 INFO L226 Difference]: Without dead ends: 21637 [2022-07-13 13:07:28,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:07:28,314 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 227 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 13:07:28,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 112 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 13:07:28,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21637 states. [2022-07-13 13:07:28,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21637 to 21635. [2022-07-13 13:07:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21635 states, 21634 states have (on average 1.0613386336322455) internal successors, (22961), 21634 states have internal predecessors, (22961), 0 states have call successors, (0), 0 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 13:07:28,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21635 states to 21635 states and 22961 transitions. [2022-07-13 13:07:28,603 INFO L78 Accepts]: Start accepts. Automaton has 21635 states and 22961 transitions. Word has length 724 [2022-07-13 13:07:28,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:07:28,603 INFO L495 AbstractCegarLoop]: Abstraction has 21635 states and 22961 transitions. [2022-07-13 13:07:28,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 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 13:07:28,604 INFO L276 IsEmpty]: Start isEmpty. Operand 21635 states and 22961 transitions. [2022-07-13 13:07:28,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2022-07-13 13:07:28,613 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:07:28,614 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:07:28,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 13:07:28,614 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:07:28,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:07:28,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1481633791, now seen corresponding path program 1 times [2022-07-13 13:07:28,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:07:28,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263587484] [2022-07-13 13:07:28,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:28,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:07:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 531 proven. 188 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-07-13 13:07:28,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:07:28,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263587484] [2022-07-13 13:07:28,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263587484] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 13:07:28,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978977713] [2022-07-13 13:07:28,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:28,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:07:28,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:07:28,955 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 13:07:28,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 13:07:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:29,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 13:07:29,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 13:07:29,896 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 526 proven. 0 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2022-07-13 13:07:29,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 13:07:29,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978977713] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:07:29,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 13:07:29,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-07-13 13:07:29,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318740551] [2022-07-13 13:07:29,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:07:29,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 13:07:29,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:07:29,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 13:07:29,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 13:07:29,899 INFO L87 Difference]: Start difference. First operand 21635 states and 22961 transitions. Second operand has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 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 13:07:31,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:07:31,150 INFO L93 Difference]: Finished difference Result 27336 states and 28991 transitions. [2022-07-13 13:07:31,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 13:07:31,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 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 730 [2022-07-13 13:07:31,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:07:31,184 INFO L225 Difference]: With dead ends: 27336 [2022-07-13 13:07:31,185 INFO L226 Difference]: Without dead ends: 27334 [2022-07-13 13:07:31,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 728 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 13:07:31,197 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 517 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 1988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1047 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 13:07:31,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 131 Invalid, 1988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 778 Invalid, 0 Unknown, 1047 Unchecked, 1.1s Time] [2022-07-13 13:07:31,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27334 states. [2022-07-13 13:07:31,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27334 to 24336. [2022-07-13 13:07:31,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24336 states, 24335 states have (on average 1.0639819190466406) internal successors, (25892), 24335 states have internal predecessors, (25892), 0 states have call successors, (0), 0 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 13:07:31,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24336 states to 24336 states and 25892 transitions. [2022-07-13 13:07:31,604 INFO L78 Accepts]: Start accepts. Automaton has 24336 states and 25892 transitions. Word has length 730 [2022-07-13 13:07:31,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:07:31,605 INFO L495 AbstractCegarLoop]: Abstraction has 24336 states and 25892 transitions. [2022-07-13 13:07:31,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 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 13:07:31,605 INFO L276 IsEmpty]: Start isEmpty. Operand 24336 states and 25892 transitions. [2022-07-13 13:07:31,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2022-07-13 13:07:31,620 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:07:31,620 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:07:31,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 13:07:31,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-13 13:07:31,841 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:07:31,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:07:31,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1728396145, now seen corresponding path program 1 times [2022-07-13 13:07:31,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:07:31,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887399535] [2022-07-13 13:07:31,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:31,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:07:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:32,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1180 backedges. 584 proven. 0 refuted. 0 times theorem prover too weak. 596 trivial. 0 not checked. [2022-07-13 13:07:32,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:07:32,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887399535] [2022-07-13 13:07:32,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887399535] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:07:32,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:07:32,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:07:32,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877402060] [2022-07-13 13:07:32,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:07:32,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:07:32,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:07:32,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:07:32,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:07:32,200 INFO L87 Difference]: Start difference. First operand 24336 states and 25892 transitions. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 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 13:07:33,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:07:33,171 INFO L93 Difference]: Finished difference Result 49265 states and 52411 transitions. [2022-07-13 13:07:33,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:07:33,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 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 787 [2022-07-13 13:07:33,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:07:33,202 INFO L225 Difference]: With dead ends: 49265 [2022-07-13 13:07:33,203 INFO L226 Difference]: Without dead ends: 25230 [2022-07-13 13:07:33,218 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 13:07:33,218 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 225 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 13:07:33,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 463 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 13:07:33,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25230 states. [2022-07-13 13:07:33,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25230 to 21929. [2022-07-13 13:07:33,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21929 states, 21928 states have (on average 1.0617931411893469) internal successors, (23283), 21928 states have internal predecessors, (23283), 0 states have call successors, (0), 0 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 13:07:33,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21929 states to 21929 states and 23283 transitions. [2022-07-13 13:07:33,491 INFO L78 Accepts]: Start accepts. Automaton has 21929 states and 23283 transitions. Word has length 787 [2022-07-13 13:07:33,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:07:33,492 INFO L495 AbstractCegarLoop]: Abstraction has 21929 states and 23283 transitions. [2022-07-13 13:07:33,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 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 13:07:33,492 INFO L276 IsEmpty]: Start isEmpty. Operand 21929 states and 23283 transitions. [2022-07-13 13:07:33,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2022-07-13 13:07:33,503 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:07:33,504 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:33,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 13:07:33,504 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:07:33,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:07:33,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1130659826, now seen corresponding path program 1 times [2022-07-13 13:07:33,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:07:33,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388181753] [2022-07-13 13:07:33,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:33,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:07:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:33,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 961 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-13 13:07:33,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:07:33,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388181753] [2022-07-13 13:07:33,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388181753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:07:33,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:07:33,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 13:07:33,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639170838] [2022-07-13 13:07:33,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:07:33,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 13:07:33,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:07:33,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 13:07:33,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 13:07:33,846 INFO L87 Difference]: Start difference. First operand 21929 states and 23283 transitions. Second operand has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 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 13:07:35,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:07:35,214 INFO L93 Difference]: Finished difference Result 45519 states and 48365 transitions. [2022-07-13 13:07:35,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 13:07:35,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 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 862 [2022-07-13 13:07:35,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:07:35,236 INFO L225 Difference]: With dead ends: 45519 [2022-07-13 13:07:35,236 INFO L226 Difference]: Without dead ends: 23891 [2022-07-13 13:07:35,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 13:07:35,248 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 346 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 13:07:35,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 549 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 13:07:35,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23891 states. [2022-07-13 13:07:35,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23891 to 22824. [2022-07-13 13:07:35,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22824 states, 22823 states have (on average 1.0457871445471674) internal successors, (23868), 22823 states have internal predecessors, (23868), 0 states have call successors, (0), 0 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 13:07:35,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22824 states to 22824 states and 23868 transitions. [2022-07-13 13:07:35,462 INFO L78 Accepts]: Start accepts. Automaton has 22824 states and 23868 transitions. Word has length 862 [2022-07-13 13:07:35,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:07:35,462 INFO L495 AbstractCegarLoop]: Abstraction has 22824 states and 23868 transitions. [2022-07-13 13:07:35,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.8) internal successors, (639), 5 states have internal predecessors, (639), 0 states have call successors, (0), 0 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 13:07:35,462 INFO L276 IsEmpty]: Start isEmpty. Operand 22824 states and 23868 transitions. [2022-07-13 13:07:35,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 929 [2022-07-13 13:07:35,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:07:35,476 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:07:35,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 13:07:35,477 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:07:35,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:07:35,477 INFO L85 PathProgramCache]: Analyzing trace with hash 265207444, now seen corresponding path program 1 times [2022-07-13 13:07:35,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:07:35,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807385766] [2022-07-13 13:07:35,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:35,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:07:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:35,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1756 backedges. 612 proven. 608 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2022-07-13 13:07:35,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:07:35,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807385766] [2022-07-13 13:07:35,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807385766] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 13:07:35,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203591792] [2022-07-13 13:07:35,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:35,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:07:35,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:07:35,952 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 13:07:36,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 13:07:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:36,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 13:07:36,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 13:07:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1756 backedges. 729 proven. 0 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2022-07-13 13:07:36,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 13:07:36,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203591792] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:07:36,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 13:07:36,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-13 13:07:36,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338348528] [2022-07-13 13:07:36,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:07:36,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:07:36,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:07:36,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:07:36,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-13 13:07:36,454 INFO L87 Difference]: Start difference. First operand 22824 states and 23868 transitions. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 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 13:07:37,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:07:37,418 INFO L93 Difference]: Finished difference Result 45047 states and 47115 transitions. [2022-07-13 13:07:37,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:07:37,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 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 928 [2022-07-13 13:07:37,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:07:37,439 INFO L225 Difference]: With dead ends: 45047 [2022-07-13 13:07:37,439 INFO L226 Difference]: Without dead ends: 22524 [2022-07-13 13:07:37,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 928 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-13 13:07:37,456 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 207 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 13:07:37,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 503 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 13:07:37,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22524 states. [2022-07-13 13:07:37,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22524 to 22524. [2022-07-13 13:07:37,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22524 states, 22523 states have (on average 1.0318785241752875) internal successors, (23241), 22523 states have internal predecessors, (23241), 0 states have call successors, (0), 0 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 13:07:37,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22524 states to 22524 states and 23241 transitions. [2022-07-13 13:07:37,690 INFO L78 Accepts]: Start accepts. Automaton has 22524 states and 23241 transitions. Word has length 928 [2022-07-13 13:07:37,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:07:37,690 INFO L495 AbstractCegarLoop]: Abstraction has 22524 states and 23241 transitions. [2022-07-13 13:07:37,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 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 13:07:37,690 INFO L276 IsEmpty]: Start isEmpty. Operand 22524 states and 23241 transitions. [2022-07-13 13:07:37,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2022-07-13 13:07:37,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:07:37,704 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:07:37,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 13:07:37,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:07:37,920 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:07:37,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:07:37,920 INFO L85 PathProgramCache]: Analyzing trace with hash -13257665, now seen corresponding path program 1 times [2022-07-13 13:07:37,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:07:37,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976415823] [2022-07-13 13:07:37,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:37,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:07:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:38,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1555 backedges. 953 proven. 0 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2022-07-13 13:07:38,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:07:38,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976415823] [2022-07-13 13:07:38,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976415823] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:07:38,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:07:38,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 13:07:38,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909766378] [2022-07-13 13:07:38,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:07:38,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 13:07:38,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:07:38,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 13:07:38,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:07:38,334 INFO L87 Difference]: Start difference. First operand 22524 states and 23241 transitions. Second operand has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 0 states have call successors, (0), 0 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 13:07:39,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:07:39,913 INFO L93 Difference]: Finished difference Result 49545 states and 51090 transitions. [2022-07-13 13:07:39,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 13:07:39,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 0 states have call successors, (0), 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 947 [2022-07-13 13:07:39,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:07:39,940 INFO L225 Difference]: With dead ends: 49545 [2022-07-13 13:07:39,940 INFO L226 Difference]: Without dead ends: 27322 [2022-07-13 13:07:39,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:07:39,955 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 507 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 13:07:39,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 139 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 13:07:39,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27322 states. [2022-07-13 13:07:40,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27322 to 22225. [2022-07-13 13:07:40,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22225 states, 22224 states have (on average 1.031272498200144) internal successors, (22919), 22224 states have internal predecessors, (22919), 0 states have call successors, (0), 0 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 13:07:40,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22225 states to 22225 states and 22919 transitions. [2022-07-13 13:07:40,239 INFO L78 Accepts]: Start accepts. Automaton has 22225 states and 22919 transitions. Word has length 947 [2022-07-13 13:07:40,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:07:40,239 INFO L495 AbstractCegarLoop]: Abstraction has 22225 states and 22919 transitions. [2022-07-13 13:07:40,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 0 states have call successors, (0), 0 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 13:07:40,240 INFO L276 IsEmpty]: Start isEmpty. Operand 22225 states and 22919 transitions. [2022-07-13 13:07:40,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 949 [2022-07-13 13:07:40,264 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:07:40,264 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 13:07:40,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 13:07:40,264 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:07:40,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:07:40,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1379876432, now seen corresponding path program 1 times [2022-07-13 13:07:40,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:07:40,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275215931] [2022-07-13 13:07:40,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:40,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:07:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:40,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 596 proven. 0 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2022-07-13 13:07:40,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:07:40,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275215931] [2022-07-13 13:07:40,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275215931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:07:40,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:07:40,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:07:40,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127685555] [2022-07-13 13:07:40,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:07:40,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:07:40,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:07:40,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:07:40,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:07:40,596 INFO L87 Difference]: Start difference. First operand 22225 states and 22919 transitions. Second operand has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 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 13:07:41,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:07:41,527 INFO L93 Difference]: Finished difference Result 49245 states and 50792 transitions. [2022-07-13 13:07:41,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:07:41,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 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 948 [2022-07-13 13:07:41,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:07:41,561 INFO L225 Difference]: With dead ends: 49245 [2022-07-13 13:07:41,562 INFO L226 Difference]: Without dead ends: 27321 [2022-07-13 13:07:41,576 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 13:07:41,576 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 171 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 13:07:41,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 505 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 13:07:41,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27321 states. [2022-07-13 13:07:41,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27321 to 25814. [2022-07-13 13:07:41,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25814 states, 25813 states have (on average 1.030023631503506) internal successors, (26588), 25813 states have internal predecessors, (26588), 0 states have call successors, (0), 0 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 13:07:41,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25814 states to 25814 states and 26588 transitions. [2022-07-13 13:07:41,887 INFO L78 Accepts]: Start accepts. Automaton has 25814 states and 26588 transitions. Word has length 948 [2022-07-13 13:07:41,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:07:41,887 INFO L495 AbstractCegarLoop]: Abstraction has 25814 states and 26588 transitions. [2022-07-13 13:07:41,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 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 13:07:41,888 INFO L276 IsEmpty]: Start isEmpty. Operand 25814 states and 26588 transitions. [2022-07-13 13:07:41,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1033 [2022-07-13 13:07:41,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:07:41,904 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 13:07:41,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 13:07:41,904 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:07:41,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:07:41,905 INFO L85 PathProgramCache]: Analyzing trace with hash 520105551, now seen corresponding path program 1 times [2022-07-13 13:07:41,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:07:41,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454355867] [2022-07-13 13:07:41,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:41,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:07:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:42,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1664 backedges. 1237 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2022-07-13 13:07:42,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:07:42,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454355867] [2022-07-13 13:07:42,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454355867] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:07:42,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:07:42,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:07:42,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465132088] [2022-07-13 13:07:42,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:07:42,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:07:42,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:07:42,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:07:42,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:07:42,226 INFO L87 Difference]: Start difference. First operand 25814 states and 26588 transitions. Second operand has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 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 13:07:43,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:07:43,510 INFO L93 Difference]: Finished difference Result 55832 states and 57492 transitions. [2022-07-13 13:07:43,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:07:43,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 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 1032 [2022-07-13 13:07:43,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:07:43,542 INFO L225 Difference]: With dead ends: 55832 [2022-07-13 13:07:43,543 INFO L226 Difference]: Without dead ends: 30319 [2022-07-13 13:07:43,561 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 13:07:43,562 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 132 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-13 13:07:43,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 136 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-13 13:07:43,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30319 states. [2022-07-13 13:07:43,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30319 to 27309. [2022-07-13 13:07:43,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27309 states, 27308 states have (on average 1.0286362970558078) internal successors, (28090), 27308 states have internal predecessors, (28090), 0 states have call successors, (0), 0 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 13:07:43,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27309 states to 27309 states and 28090 transitions. [2022-07-13 13:07:43,844 INFO L78 Accepts]: Start accepts. Automaton has 27309 states and 28090 transitions. Word has length 1032 [2022-07-13 13:07:43,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:07:43,845 INFO L495 AbstractCegarLoop]: Abstraction has 27309 states and 28090 transitions. [2022-07-13 13:07:43,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 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 13:07:43,845 INFO L276 IsEmpty]: Start isEmpty. Operand 27309 states and 28090 transitions. [2022-07-13 13:07:43,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1118 [2022-07-13 13:07:43,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:07:43,863 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:07:43,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 13:07:43,863 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:07:43,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:07:43,864 INFO L85 PathProgramCache]: Analyzing trace with hash 690598981, now seen corresponding path program 1 times [2022-07-13 13:07:43,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:07:43,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401281076] [2022-07-13 13:07:43,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:43,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:07:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2334 backedges. 74 proven. 1081 refuted. 0 times theorem prover too weak. 1179 trivial. 0 not checked. [2022-07-13 13:07:44,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:07:44,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401281076] [2022-07-13 13:07:44,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401281076] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 13:07:44,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806490491] [2022-07-13 13:07:44,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:07:44,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:07:44,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:07:44,319 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 13:07:44,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 13:07:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:07:44,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 1311 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 13:07:44,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 13:09:13,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2334 backedges. 74 proven. 1081 refuted. 0 times theorem prover too weak. 1179 trivial. 0 not checked. [2022-07-13 13:09:13,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 13:09:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2334 backedges. 74 proven. 1081 refuted. 0 times theorem prover too weak. 1179 trivial. 0 not checked. [2022-07-13 13:09:15,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806490491] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 13:09:15,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 13:09:15,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-07-13 13:09:15,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698024656] [2022-07-13 13:09:15,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 13:09:15,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 13:09:15,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:09:15,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 13:09:15,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-13 13:09:15,914 INFO L87 Difference]: Start difference. First operand 27309 states and 28090 transitions. Second operand has 10 states, 10 states have (on average 111.6) internal successors, (1116), 9 states have internal predecessors, (1116), 0 states have call successors, (0), 0 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 13:09:21,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:09:21,665 INFO L93 Difference]: Finished difference Result 73500 states and 75531 transitions. [2022-07-13 13:09:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 13:09:21,666 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 111.6) internal successors, (1116), 9 states have internal predecessors, (1116), 0 states have call successors, (0), 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 1117 [2022-07-13 13:09:21,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:09:21,709 INFO L225 Difference]: With dead ends: 73500 [2022-07-13 13:09:21,709 INFO L226 Difference]: Without dead ends: 46492 [2022-07-13 13:09:21,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2248 GetRequests, 2231 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=116, Invalid=225, Unknown=1, NotChecked=0, Total=342 [2022-07-13 13:09:21,727 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 2786 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 2834 mSolverCounterSat, 627 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2786 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 5746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 627 IncrementalHoareTripleChecker+Valid, 2834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2285 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 13:09:21,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2786 Valid, 245 Invalid, 5746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [627 Valid, 2834 Invalid, 0 Unknown, 2285 Unchecked, 3.2s Time] [2022-07-13 13:09:21,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46492 states. [2022-07-13 13:09:22,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46492 to 26409. [2022-07-13 13:09:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26409 states, 26408 states have (on average 1.0286276885792185) internal successors, (27164), 26408 states have internal predecessors, (27164), 0 states have call successors, (0), 0 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 13:09:22,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26409 states to 26409 states and 27164 transitions. [2022-07-13 13:09:22,081 INFO L78 Accepts]: Start accepts. Automaton has 26409 states and 27164 transitions. Word has length 1117 [2022-07-13 13:09:22,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:09:22,082 INFO L495 AbstractCegarLoop]: Abstraction has 26409 states and 27164 transitions. [2022-07-13 13:09:22,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 111.6) internal successors, (1116), 9 states have internal predecessors, (1116), 0 states have call successors, (0), 0 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 13:09:22,082 INFO L276 IsEmpty]: Start isEmpty. Operand 26409 states and 27164 transitions. [2022-07-13 13:09:22,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1268 [2022-07-13 13:09:22,107 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:09:22,107 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:09:22,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 13:09:22,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:09:22,324 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:09:22,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:09:22,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1767534720, now seen corresponding path program 1 times [2022-07-13 13:09:22,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:09:22,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366466707] [2022-07-13 13:09:22,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:09:22,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:09:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:09:22,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 1477 proven. 188 refuted. 0 times theorem prover too weak. 1240 trivial. 0 not checked. [2022-07-13 13:09:22,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:09:22,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366466707] [2022-07-13 13:09:22,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366466707] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 13:09:22,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781276757] [2022-07-13 13:09:22,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:09:22,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:09:22,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:09:22,773 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 13:09:22,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 13:09:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:09:23,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 13:09:23,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 13:09:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2905 backedges. 1032 proven. 0 refuted. 0 times theorem prover too weak. 1873 trivial. 0 not checked. [2022-07-13 13:09:23,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 13:09:23,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781276757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:09:23,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 13:09:23,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2022-07-13 13:09:23,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887440549] [2022-07-13 13:09:23,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:09:23,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 13:09:23,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:09:23,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 13:09:23,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-13 13:09:23,404 INFO L87 Difference]: Start difference. First operand 26409 states and 27164 transitions. Second operand has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 0 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 13:09:25,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:09:25,559 INFO L93 Difference]: Finished difference Result 61508 states and 63218 transitions. [2022-07-13 13:09:25,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 13:09:25,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 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 1267 [2022-07-13 13:09:25,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:09:25,596 INFO L225 Difference]: With dead ends: 61508 [2022-07-13 13:09:25,596 INFO L226 Difference]: Without dead ends: 35400 [2022-07-13 13:09:25,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1270 GetRequests, 1264 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-13 13:09:25,612 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 1043 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-13 13:09:25,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1043 Valid, 144 Invalid, 2223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-13 13:09:25,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35400 states. [2022-07-13 13:09:25,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35400 to 24010. [2022-07-13 13:09:25,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24010 states, 24009 states have (on average 1.0281561081261195) internal successors, (24685), 24009 states have internal predecessors, (24685), 0 states have call successors, (0), 0 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 13:09:25,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24010 states to 24010 states and 24685 transitions. [2022-07-13 13:09:25,906 INFO L78 Accepts]: Start accepts. Automaton has 24010 states and 24685 transitions. Word has length 1267 [2022-07-13 13:09:25,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:09:25,907 INFO L495 AbstractCegarLoop]: Abstraction has 24010 states and 24685 transitions. [2022-07-13 13:09:25,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.8) internal successors, (489), 5 states have internal predecessors, (489), 0 states have call successors, (0), 0 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 13:09:25,907 INFO L276 IsEmpty]: Start isEmpty. Operand 24010 states and 24685 transitions. [2022-07-13 13:09:25,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1471 [2022-07-13 13:09:25,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:09:25,938 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-13 13:09:25,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-13 13:09:26,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-13 13:09:26,158 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:09:26,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:09:26,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1352832329, now seen corresponding path program 1 times [2022-07-13 13:09:26,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:09:26,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860258305] [2022-07-13 13:09:26,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:09:26,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:09:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:09:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4077 backedges. 2416 proven. 0 refuted. 0 times theorem prover too weak. 1661 trivial. 0 not checked. [2022-07-13 13:09:26,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:09:26,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860258305] [2022-07-13 13:09:26,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860258305] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:09:26,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:09:26,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:09:26,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142403186] [2022-07-13 13:09:26,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:09:26,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:09:26,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:09:26,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:09:26,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:09:26,682 INFO L87 Difference]: Start difference. First operand 24010 states and 24685 transitions. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 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 13:09:27,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:09:27,506 INFO L93 Difference]: Finished difference Result 40497 states and 41561 transitions. [2022-07-13 13:09:27,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:09:27,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 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 1470 [2022-07-13 13:09:27,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:09:27,507 INFO L225 Difference]: With dead ends: 40497 [2022-07-13 13:09:27,507 INFO L226 Difference]: Without dead ends: 0 [2022-07-13 13:09:27,519 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 13:09:27,520 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 154 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 13:09:27,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 118 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 13:09:27,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-13 13:09:27,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-13 13:09:27,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:09:27,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-13 13:09:27,521 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1470 [2022-07-13 13:09:27,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:09:27,521 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-13 13:09:27,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 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 13:09:27,522 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-13 13:09:27,522 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-13 13:09:27,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 13:09:27,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 13:09:27,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-13 13:09:44,753 WARN L233 SmtUtils]: Spent 17.22s on a formula simplification. DAG size of input: 680 DAG size of output: 674 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-07-13 13:10:21,005 WARN L233 SmtUtils]: Spent 36.25s on a formula simplification. DAG size of input: 789 DAG size of output: 777 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)