./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Addition03-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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/recursive/Addition03-1.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 2b4726bd085117d6d28f7ec87f442bbec9d0d87c17bc39b8147695c8c5a6ec7b --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 02:33:25,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 02:33:25,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 02:33:25,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 02:33:25,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 02:33:25,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 02:33:25,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 02:33:25,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 02:33:25,296 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 02:33:25,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 02:33:25,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 02:33:25,304 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 02:33:25,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 02:33:25,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 02:33:25,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 02:33:25,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 02:33:25,309 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 02:33:25,311 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 02:33:25,311 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 02:33:25,315 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 02:33:25,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 02:33:25,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 02:33:25,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 02:33:25,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 02:33:25,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 02:33:25,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 02:33:25,323 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 02:33:25,324 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 02:33:25,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 02:33:25,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 02:33:25,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 02:33:25,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 02:33:25,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 02:33:25,328 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 02:33:25,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 02:33:25,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 02:33:25,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 02:33:25,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 02:33:25,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 02:33:25,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 02:33:25,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 02:33:25,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 02:33:25,359 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 02:33:25,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 02:33:25,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 02:33:25,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 02:33:25,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 02:33:25,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 02:33:25,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 02:33:25,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 02:33:25,363 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 02:33:25,363 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 02:33:25,363 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 02:33:25,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 02:33:25,364 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 02:33:25,364 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 02:33:25,364 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 02:33:25,364 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 02:33:25,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 02:33:25,364 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 02:33:25,365 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 02:33:25,365 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 02:33:25,365 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 02:33:25,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 02:33:25,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 02:33:25,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 02:33:25,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 02:33:25,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 02:33:25,366 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 02:33:25,366 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 02:33:25,366 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 02:33:25,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 02:33:25,367 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 02:33:25,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 02:33:25,367 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 02:33:25,367 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 02:33:25,367 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 02:33:25,368 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b4726bd085117d6d28f7ec87f442bbec9d0d87c17bc39b8147695c8c5a6ec7b [2023-02-17 02:33:25,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 02:33:25,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 02:33:25,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 02:33:25,610 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 02:33:25,610 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 02:33:25,611 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Addition03-1.c [2023-02-17 02:33:26,641 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 02:33:26,770 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 02:33:26,771 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Addition03-1.c [2023-02-17 02:33:26,778 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13b7d6b9e/7c1b1921efbb46c0bfa3e60f9b3758b5/FLAGe7b37dd5a [2023-02-17 02:33:26,792 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13b7d6b9e/7c1b1921efbb46c0bfa3e60f9b3758b5 [2023-02-17 02:33:26,794 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 02:33:26,795 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 02:33:26,795 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 02:33:26,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 02:33:26,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 02:33:26,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 02:33:26" (1/1) ... [2023-02-17 02:33:26,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc02e82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:26, skipping insertion in model container [2023-02-17 02:33:26,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 02:33:26" (1/1) ... [2023-02-17 02:33:26,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 02:33:26,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 02:33:26,943 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Addition03-1.c[840,853] [2023-02-17 02:33:26,947 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 02:33:26,956 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 02:33:26,969 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Addition03-1.c[840,853] [2023-02-17 02:33:26,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 02:33:26,979 INFO L208 MainTranslator]: Completed translation [2023-02-17 02:33:26,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:26 WrapperNode [2023-02-17 02:33:26,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 02:33:26,981 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 02:33:26,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 02:33:26,981 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 02:33:26,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:26" (1/1) ... [2023-02-17 02:33:26,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:26" (1/1) ... [2023-02-17 02:33:27,001 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2023-02-17 02:33:27,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 02:33:27,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 02:33:27,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 02:33:27,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 02:33:27,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:26" (1/1) ... [2023-02-17 02:33:27,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:26" (1/1) ... [2023-02-17 02:33:27,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:26" (1/1) ... [2023-02-17 02:33:27,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:26" (1/1) ... [2023-02-17 02:33:27,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:26" (1/1) ... [2023-02-17 02:33:27,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:26" (1/1) ... [2023-02-17 02:33:27,023 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:26" (1/1) ... [2023-02-17 02:33:27,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:26" (1/1) ... [2023-02-17 02:33:27,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 02:33:27,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 02:33:27,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 02:33:27,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 02:33:27,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:26" (1/1) ... [2023-02-17 02:33:27,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 02:33:27,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:33:27,060 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) [2023-02-17 02:33:27,079 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 [2023-02-17 02:33:27,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 02:33:27,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 02:33:27,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 02:33:27,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 02:33:27,092 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2023-02-17 02:33:27,092 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2023-02-17 02:33:27,137 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 02:33:27,139 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 02:33:27,237 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 02:33:27,248 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 02:33:27,256 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-17 02:33:27,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:33:27 BoogieIcfgContainer [2023-02-17 02:33:27,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 02:33:27,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 02:33:27,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 02:33:27,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 02:33:27,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 02:33:26" (1/3) ... [2023-02-17 02:33:27,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7219498d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 02:33:27, skipping insertion in model container [2023-02-17 02:33:27,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 02:33:26" (2/3) ... [2023-02-17 02:33:27,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7219498d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 02:33:27, skipping insertion in model container [2023-02-17 02:33:27,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:33:27" (3/3) ... [2023-02-17 02:33:27,264 INFO L112 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2023-02-17 02:33:27,278 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 02:33:27,292 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 02:33:27,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 02:33:27,343 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@34007509, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 02:33:27,343 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 02:33:27,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 02:33:27,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-17 02:33:27,351 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:33:27,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:33:27,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:33:27,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:33:27,356 INFO L85 PathProgramCache]: Analyzing trace with hash -100249854, now seen corresponding path program 1 times [2023-02-17 02:33:27,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:33:27,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612391904] [2023-02-17 02:33:27,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:33:27,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:33:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:27,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:33:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:27,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:33:27,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:33:27,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612391904] [2023-02-17 02:33:27,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612391904] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:33:27,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:33:27,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 02:33:27,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759482724] [2023-02-17 02:33:27,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:33:27,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 02:33:27,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:33:27,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 02:33:27,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-17 02:33:27,631 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 02:33:27,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:33:27,726 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2023-02-17 02:33:27,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-17 02:33:27,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-02-17 02:33:27,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:33:27,733 INFO L225 Difference]: With dead ends: 32 [2023-02-17 02:33:27,734 INFO L226 Difference]: Without dead ends: 19 [2023-02-17 02:33:27,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-17 02:33:27,740 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:33:27,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 40 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:33:27,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-17 02:33:27,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-17 02:33:27,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-17 02:33:27,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2023-02-17 02:33:27,772 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2023-02-17 02:33:27,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:33:27,774 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2023-02-17 02:33:27,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 02:33:27,774 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2023-02-17 02:33:27,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-17 02:33:27,776 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:33:27,776 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:33:27,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 02:33:27,776 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:33:27,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:33:27,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2083914533, now seen corresponding path program 1 times [2023-02-17 02:33:27,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:33:27,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777067658] [2023-02-17 02:33:27,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:33:27,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:33:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:27,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:33:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:27,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 02:33:27,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:33:27,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777067658] [2023-02-17 02:33:27,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777067658] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 02:33:27,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 02:33:27,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 02:33:27,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561295329] [2023-02-17 02:33:27,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 02:33:27,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 02:33:27,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:33:27,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 02:33:27,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 02:33:27,866 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 02:33:27,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:33:27,904 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2023-02-17 02:33:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 02:33:27,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-02-17 02:33:27,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:33:27,905 INFO L225 Difference]: With dead ends: 29 [2023-02-17 02:33:27,905 INFO L226 Difference]: Without dead ends: 21 [2023-02-17 02:33:27,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 02:33:27,911 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 02:33:27,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 02:33:27,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-02-17 02:33:27,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2023-02-17 02:33:27,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-17 02:33:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-02-17 02:33:27,925 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2023-02-17 02:33:27,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:33:27,925 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-02-17 02:33:27,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 02:33:27,926 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-02-17 02:33:27,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 02:33:27,927 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:33:27,927 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:33:27,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 02:33:27,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:33:27,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:33:27,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1402250658, now seen corresponding path program 1 times [2023-02-17 02:33:27,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:33:27,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962498025] [2023-02-17 02:33:27,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:33:27,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:33:27,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:28,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:33:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:28,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:28,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 02:33:28,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:33:28,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962498025] [2023-02-17 02:33:28,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962498025] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:33:28,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273963902] [2023-02-17 02:33:28,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:33:28,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:33:28,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:33:28,113 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) [2023-02-17 02:33:28,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 02:33:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:28,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 02:33:28,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:33:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 02:33:28,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:33:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 02:33:28,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273963902] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:33:28,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:33:28,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2023-02-17 02:33:28,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429376917] [2023-02-17 02:33:28,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:33:28,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 02:33:28,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:33:28,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 02:33:28,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-02-17 02:33:28,333 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-17 02:33:28,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:33:28,439 INFO L93 Difference]: Finished difference Result 54 states and 75 transitions. [2023-02-17 02:33:28,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-17 02:33:28,439 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 17 [2023-02-17 02:33:28,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:33:28,440 INFO L225 Difference]: With dead ends: 54 [2023-02-17 02:33:28,441 INFO L226 Difference]: Without dead ends: 34 [2023-02-17 02:33:28,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-02-17 02:33:28,442 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 31 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:33:28,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 60 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:33:28,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-17 02:33:28,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2023-02-17 02:33:28,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-17 02:33:28,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2023-02-17 02:33:28,452 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 17 [2023-02-17 02:33:28,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:33:28,453 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2023-02-17 02:33:28,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-17 02:33:28,453 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2023-02-17 02:33:28,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-17 02:33:28,456 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:33:28,456 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:33:28,464 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-17 02:33:28,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:33:28,663 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:33:28,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:33:28,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1901242716, now seen corresponding path program 2 times [2023-02-17 02:33:28,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:33:28,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570720536] [2023-02-17 02:33:28,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:33:28,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:33:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:28,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:33:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:28,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:28,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:28,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:28,874 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-17 02:33:28,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:33:28,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570720536] [2023-02-17 02:33:28,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570720536] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:33:28,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29870922] [2023-02-17 02:33:28,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 02:33:28,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:33:28,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:33:28,876 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) [2023-02-17 02:33:28,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 02:33:28,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 02:33:28,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:33:28,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 02:33:28,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:33:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-17 02:33:28,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:33:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-17 02:33:29,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29870922] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:33:29,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:33:29,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 16 [2023-02-17 02:33:29,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589422932] [2023-02-17 02:33:29,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:33:29,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-17 02:33:29,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:33:29,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-17 02:33:29,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-02-17 02:33:29,042 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 6 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-02-17 02:33:29,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:33:29,131 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2023-02-17 02:33:29,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 02:33:29,132 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 6 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) Word has length 31 [2023-02-17 02:33:29,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:33:29,133 INFO L225 Difference]: With dead ends: 46 [2023-02-17 02:33:29,133 INFO L226 Difference]: Without dead ends: 40 [2023-02-17 02:33:29,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 53 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2023-02-17 02:33:29,134 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 33 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:33:29,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 63 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:33:29,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-17 02:33:29,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2023-02-17 02:33:29,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 4 states have call successors, (4), 3 states have call predecessors, (4), 6 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-17 02:33:29,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2023-02-17 02:33:29,139 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 31 [2023-02-17 02:33:29,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:33:29,140 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2023-02-17 02:33:29,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 6 states have call successors, (6), 1 states have call predecessors, (6), 6 states have return successors, (11), 6 states have call predecessors, (11), 6 states have call successors, (11) [2023-02-17 02:33:29,140 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2023-02-17 02:33:29,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-17 02:33:29,141 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:33:29,141 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:33:29,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 02:33:29,348 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,SelfDestructingSolverStorable3 [2023-02-17 02:33:29,348 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:33:29,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:33:29,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2146751834, now seen corresponding path program 3 times [2023-02-17 02:33:29,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:33:29,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930243623] [2023-02-17 02:33:29,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:33:29,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:33:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:29,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:33:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:29,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:29,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:29,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:29,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:29,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:29,545 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-02-17 02:33:29,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:33:29,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930243623] [2023-02-17 02:33:29,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930243623] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:33:29,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450693935] [2023-02-17 02:33:29,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 02:33:29,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:33:29,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:33:29,547 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) [2023-02-17 02:33:29,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 02:33:29,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-17 02:33:29,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:33:29,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-17 02:33:29,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:33:29,641 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-02-17 02:33:29,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:33:29,824 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-17 02:33:29,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450693935] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:33:29,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:33:29,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 20 [2023-02-17 02:33:29,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936518101] [2023-02-17 02:33:29,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:33:29,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-17 02:33:29,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:33:29,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-17 02:33:29,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-02-17 02:33:29,828 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2023-02-17 02:33:29,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:33:29,938 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2023-02-17 02:33:29,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-17 02:33:29,939 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) Word has length 45 [2023-02-17 02:33:29,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:33:29,941 INFO L225 Difference]: With dead ends: 52 [2023-02-17 02:33:29,942 INFO L226 Difference]: Without dead ends: 46 [2023-02-17 02:33:29,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 79 SyntacticMatches, 12 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=251, Invalid=505, Unknown=0, NotChecked=0, Total=756 [2023-02-17 02:33:29,943 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 65 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:33:29,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 77 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:33:29,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-02-17 02:33:29,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2023-02-17 02:33:29,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 8 states have return successors, (12), 9 states have call predecessors, (12), 4 states have call successors, (12) [2023-02-17 02:33:29,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2023-02-17 02:33:29,957 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 45 [2023-02-17 02:33:29,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:33:29,957 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2023-02-17 02:33:29,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.3) internal successors, (46), 20 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (17), 8 states have call predecessors, (17), 8 states have call successors, (17) [2023-02-17 02:33:29,958 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2023-02-17 02:33:29,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-17 02:33:29,965 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:33:29,965 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:33:29,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-17 02:33:30,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:33:30,166 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:33:30,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:33:30,167 INFO L85 PathProgramCache]: Analyzing trace with hash -489684568, now seen corresponding path program 4 times [2023-02-17 02:33:30,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:33:30,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750936711] [2023-02-17 02:33:30,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:33:30,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:33:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:30,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:33:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:30,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:30,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:30,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:30,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:30,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:30,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:30,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:30,594 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-02-17 02:33:30,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:33:30,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750936711] [2023-02-17 02:33:30,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750936711] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:33:30,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530503370] [2023-02-17 02:33:30,595 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 02:33:30,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:33:30,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:33:30,597 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) [2023-02-17 02:33:30,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 02:33:30,654 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 02:33:30,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:33:30,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-17 02:33:30,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:33:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-02-17 02:33:30,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:33:30,896 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-17 02:33:30,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530503370] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:33:30,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:33:30,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 24 [2023-02-17 02:33:30,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623613996] [2023-02-17 02:33:30,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:33:30,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-17 02:33:30,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:33:30,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-17 02:33:30,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2023-02-17 02:33:30,899 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 10 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) [2023-02-17 02:33:31,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:33:31,034 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2023-02-17 02:33:31,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-17 02:33:31,034 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 10 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) Word has length 59 [2023-02-17 02:33:31,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:33:31,035 INFO L225 Difference]: With dead ends: 58 [2023-02-17 02:33:31,035 INFO L226 Difference]: Without dead ends: 52 [2023-02-17 02:33:31,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 105 SyntacticMatches, 16 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=373, Invalid=749, Unknown=0, NotChecked=0, Total=1122 [2023-02-17 02:33:31,037 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 106 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:33:31,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 97 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:33:31,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-17 02:33:31,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2023-02-17 02:33:31,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 4 states have call successors, (4), 3 states have call predecessors, (4), 10 states have return successors, (14), 11 states have call predecessors, (14), 4 states have call successors, (14) [2023-02-17 02:33:31,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2023-02-17 02:33:31,047 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 59 [2023-02-17 02:33:31,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:33:31,049 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2023-02-17 02:33:31,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 24 states have internal predecessors, (56), 10 states have call successors, (10), 1 states have call predecessors, (10), 10 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) [2023-02-17 02:33:31,050 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2023-02-17 02:33:31,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-02-17 02:33:31,052 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:33:31,052 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:33:31,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 02:33:31,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:33:31,257 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:33:31,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:33:31,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1199719510, now seen corresponding path program 5 times [2023-02-17 02:33:31,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:33:31,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264663736] [2023-02-17 02:33:31,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:33:31,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:33:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:31,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:33:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:31,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:31,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:31,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:31,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:31,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:31,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:31,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:31,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:31,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:31,735 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-02-17 02:33:31,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:33:31,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264663736] [2023-02-17 02:33:31,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264663736] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:33:31,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519693184] [2023-02-17 02:33:31,735 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 02:33:31,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:33:31,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:33:31,737 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) [2023-02-17 02:33:31,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 02:33:31,827 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-02-17 02:33:31,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:33:31,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-17 02:33:31,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:33:31,856 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-02-17 02:33:31,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:33:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-17 02:33:32,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519693184] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:33:32,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:33:32,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 23] total 28 [2023-02-17 02:33:32,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994785955] [2023-02-17 02:33:32,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:33:32,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-17 02:33:32,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:33:32,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-17 02:33:32,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2023-02-17 02:33:32,199 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 12 states have call successors, (12), 1 states have call predecessors, (12), 12 states have return successors, (29), 12 states have call predecessors, (29), 12 states have call successors, (29) [2023-02-17 02:33:32,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:33:32,354 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2023-02-17 02:33:32,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-17 02:33:32,354 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 12 states have call successors, (12), 1 states have call predecessors, (12), 12 states have return successors, (29), 12 states have call predecessors, (29), 12 states have call successors, (29) Word has length 73 [2023-02-17 02:33:32,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:33:32,356 INFO L225 Difference]: With dead ends: 64 [2023-02-17 02:33:32,357 INFO L226 Difference]: Without dead ends: 58 [2023-02-17 02:33:32,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 131 SyntacticMatches, 20 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=519, Invalid=1041, Unknown=0, NotChecked=0, Total=1560 [2023-02-17 02:33:32,358 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 120 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:33:32,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 102 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:33:32,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-02-17 02:33:32,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2023-02-17 02:33:32,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 4 states have call successors, (4), 3 states have call predecessors, (4), 12 states have return successors, (16), 13 states have call predecessors, (16), 4 states have call successors, (16) [2023-02-17 02:33:32,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2023-02-17 02:33:32,376 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 73 [2023-02-17 02:33:32,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:33:32,377 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2023-02-17 02:33:32,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.357142857142857) internal successors, (66), 28 states have internal predecessors, (66), 12 states have call successors, (12), 1 states have call predecessors, (12), 12 states have return successors, (29), 12 states have call predecessors, (29), 12 states have call successors, (29) [2023-02-17 02:33:32,377 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2023-02-17 02:33:32,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-02-17 02:33:32,378 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:33:32,378 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:33:32,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 02:33:32,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:33:32,583 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:33:32,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:33:32,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1560921940, now seen corresponding path program 6 times [2023-02-17 02:33:32,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:33:32,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131805082] [2023-02-17 02:33:32,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:33:32,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:33:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:32,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:33:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:32,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:32,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:32,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:32,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:32,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:33,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:33,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:33,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:33,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:33,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:33,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:33,207 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-02-17 02:33:33,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:33:33,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131805082] [2023-02-17 02:33:33,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131805082] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:33:33,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542605277] [2023-02-17 02:33:33,208 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 02:33:33,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:33:33,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:33:33,213 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) [2023-02-17 02:33:33,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 02:33:33,355 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2023-02-17 02:33:33,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:33:33,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-17 02:33:33,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:33:33,390 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-02-17 02:33:33,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:33:33,871 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-02-17 02:33:33,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542605277] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:33:33,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:33:33,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 27] total 32 [2023-02-17 02:33:33,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226860066] [2023-02-17 02:33:33,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:33:33,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-17 02:33:33,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:33:33,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-17 02:33:33,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=723, Unknown=0, NotChecked=0, Total=992 [2023-02-17 02:33:33,874 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 32 states, 32 states have (on average 2.375) internal successors, (76), 32 states have internal predecessors, (76), 14 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) [2023-02-17 02:33:34,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:33:34,020 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2023-02-17 02:33:34,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-17 02:33:34,020 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 32 states have internal predecessors, (76), 14 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) Word has length 87 [2023-02-17 02:33:34,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:33:34,021 INFO L225 Difference]: With dead ends: 70 [2023-02-17 02:33:34,021 INFO L226 Difference]: Without dead ends: 64 [2023-02-17 02:33:34,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 157 SyntacticMatches, 24 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=689, Invalid=1381, Unknown=0, NotChecked=0, Total=2070 [2023-02-17 02:33:34,023 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 191 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:33:34,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 119 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:33:34,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-17 02:33:34,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2023-02-17 02:33:34,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 14 states have return successors, (18), 15 states have call predecessors, (18), 4 states have call successors, (18) [2023-02-17 02:33:34,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2023-02-17 02:33:34,027 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 87 [2023-02-17 02:33:34,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:33:34,027 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2023-02-17 02:33:34,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.375) internal successors, (76), 32 states have internal predecessors, (76), 14 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) [2023-02-17 02:33:34,027 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2023-02-17 02:33:34,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-02-17 02:33:34,028 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:33:34,028 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:33:34,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 02:33:34,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:33:34,234 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:33:34,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:33:34,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1048271022, now seen corresponding path program 7 times [2023-02-17 02:33:34,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:33:34,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159445411] [2023-02-17 02:33:34,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:33:34,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:33:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:34,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:33:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:34,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:34,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:34,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:34,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:34,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:34,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:34,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:34,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:34,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:35,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:35,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:35,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:35,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:35,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:35,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:35,119 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-02-17 02:33:35,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:33:35,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159445411] [2023-02-17 02:33:35,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159445411] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:33:35,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814307158] [2023-02-17 02:33:35,120 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 02:33:35,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:33:35,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:33:35,121 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) [2023-02-17 02:33:35,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 02:33:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:35,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 30 conjunts are in the unsatisfiable core [2023-02-17 02:33:35,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:33:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-02-17 02:33:35,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:33:35,982 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-02-17 02:33:35,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814307158] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:33:35,982 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:33:35,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 31] total 36 [2023-02-17 02:33:35,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491783199] [2023-02-17 02:33:35,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:33:35,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-02-17 02:33:35,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:33:35,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-02-17 02:33:35,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=921, Unknown=0, NotChecked=0, Total=1260 [2023-02-17 02:33:35,987 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 36 states, 36 states have (on average 2.388888888888889) internal successors, (86), 36 states have internal predecessors, (86), 16 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (41), 16 states have call predecessors, (41), 16 states have call successors, (41) [2023-02-17 02:33:36,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:33:36,133 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2023-02-17 02:33:36,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-17 02:33:36,133 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.388888888888889) internal successors, (86), 36 states have internal predecessors, (86), 16 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (41), 16 states have call predecessors, (41), 16 states have call successors, (41) Word has length 101 [2023-02-17 02:33:36,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:33:36,134 INFO L225 Difference]: With dead ends: 76 [2023-02-17 02:33:36,135 INFO L226 Difference]: Without dead ends: 70 [2023-02-17 02:33:36,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 183 SyntacticMatches, 28 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=883, Invalid=1769, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 02:33:36,137 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 136 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:33:36,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 134 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:33:36,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-02-17 02:33:36,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2023-02-17 02:33:36,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 4 states have call successors, (4), 3 states have call predecessors, (4), 16 states have return successors, (20), 17 states have call predecessors, (20), 4 states have call successors, (20) [2023-02-17 02:33:36,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2023-02-17 02:33:36,145 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 101 [2023-02-17 02:33:36,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:33:36,145 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2023-02-17 02:33:36,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.388888888888889) internal successors, (86), 36 states have internal predecessors, (86), 16 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (41), 16 states have call predecessors, (41), 16 states have call successors, (41) [2023-02-17 02:33:36,145 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2023-02-17 02:33:36,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-02-17 02:33:36,146 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:33:36,146 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:33:36,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-17 02:33:36,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:33:36,355 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:33:36,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:33:36,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2075065264, now seen corresponding path program 8 times [2023-02-17 02:33:36,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:33:36,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319443841] [2023-02-17 02:33:36,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:33:36,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:33:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:36,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:33:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:36,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:36,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:36,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:36,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:36,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:37,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:37,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:37,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:37,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:37,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:37,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:37,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:37,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:37,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:37,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:37,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:37,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-02-17 02:33:37,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:33:37,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319443841] [2023-02-17 02:33:37,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319443841] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:33:37,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510707555] [2023-02-17 02:33:37,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 02:33:37,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:33:37,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:33:37,387 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) [2023-02-17 02:33:37,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-17 02:33:37,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 02:33:37,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:33:37,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-17 02:33:37,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:33:37,762 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-02-17 02:33:37,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:33:38,723 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-02-17 02:33:38,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510707555] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:33:38,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:33:38,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 35] total 40 [2023-02-17 02:33:38,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490383377] [2023-02-17 02:33:38,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:33:38,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-02-17 02:33:38,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:33:38,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-02-17 02:33:38,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=1143, Unknown=0, NotChecked=0, Total=1560 [2023-02-17 02:33:38,726 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 40 states, 40 states have (on average 2.4) internal successors, (96), 40 states have internal predecessors, (96), 18 states have call successors, (18), 1 states have call predecessors, (18), 18 states have return successors, (47), 18 states have call predecessors, (47), 18 states have call successors, (47) [2023-02-17 02:33:38,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:33:38,948 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2023-02-17 02:33:38,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-17 02:33:38,948 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.4) internal successors, (96), 40 states have internal predecessors, (96), 18 states have call successors, (18), 1 states have call predecessors, (18), 18 states have return successors, (47), 18 states have call predecessors, (47), 18 states have call successors, (47) Word has length 115 [2023-02-17 02:33:38,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:33:38,949 INFO L225 Difference]: With dead ends: 82 [2023-02-17 02:33:38,949 INFO L226 Difference]: Without dead ends: 76 [2023-02-17 02:33:38,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 209 SyntacticMatches, 32 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1101, Invalid=2205, Unknown=0, NotChecked=0, Total=3306 [2023-02-17 02:33:38,951 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 194 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:33:38,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 147 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:33:38,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-17 02:33:38,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2023-02-17 02:33:38,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 51 states have internal predecessors, (56), 4 states have call successors, (4), 3 states have call predecessors, (4), 18 states have return successors, (22), 19 states have call predecessors, (22), 4 states have call successors, (22) [2023-02-17 02:33:38,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2023-02-17 02:33:38,955 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 115 [2023-02-17 02:33:38,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:33:38,955 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2023-02-17 02:33:38,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.4) internal successors, (96), 40 states have internal predecessors, (96), 18 states have call successors, (18), 1 states have call predecessors, (18), 18 states have return successors, (47), 18 states have call predecessors, (47), 18 states have call successors, (47) [2023-02-17 02:33:38,955 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2023-02-17 02:33:38,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-02-17 02:33:38,956 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:33:38,956 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:33:38,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-17 02:33:39,162 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,SelfDestructingSolverStorable9 [2023-02-17 02:33:39,163 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:33:39,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:33:39,163 INFO L85 PathProgramCache]: Analyzing trace with hash -107806286, now seen corresponding path program 9 times [2023-02-17 02:33:39,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:33:39,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803749522] [2023-02-17 02:33:39,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:33:39,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:33:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:39,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:33:39,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:39,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:39,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:39,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:39,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:39,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:39,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:40,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:40,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:40,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:40,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:40,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:40,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:40,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:40,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:40,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:40,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:40,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:40,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:40,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:40,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:40,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2023-02-17 02:33:40,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:33:40,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803749522] [2023-02-17 02:33:40,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803749522] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:33:40,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048301316] [2023-02-17 02:33:40,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 02:33:40,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:33:40,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:33:40,496 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:33:40,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-17 02:33:40,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2023-02-17 02:33:40,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:33:40,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-17 02:33:40,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:33:41,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2023-02-17 02:33:41,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:33:42,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-02-17 02:33:42,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048301316] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:33:42,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:33:42,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 39] total 44 [2023-02-17 02:33:42,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454762047] [2023-02-17 02:33:42,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:33:42,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-02-17 02:33:42,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:33:42,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-02-17 02:33:42,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=1389, Unknown=0, NotChecked=0, Total=1892 [2023-02-17 02:33:42,132 INFO L87 Difference]: Start difference. First operand 74 states and 82 transitions. Second operand has 44 states, 44 states have (on average 2.409090909090909) internal successors, (106), 44 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (53), 20 states have call predecessors, (53), 20 states have call successors, (53) [2023-02-17 02:33:42,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:33:42,368 INFO L93 Difference]: Finished difference Result 88 states and 99 transitions. [2023-02-17 02:33:42,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-17 02:33:42,369 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.409090909090909) internal successors, (106), 44 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (53), 20 states have call predecessors, (53), 20 states have call successors, (53) Word has length 129 [2023-02-17 02:33:42,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:33:42,369 INFO L225 Difference]: With dead ends: 88 [2023-02-17 02:33:42,369 INFO L226 Difference]: Without dead ends: 82 [2023-02-17 02:33:42,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 235 SyntacticMatches, 36 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1663 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1343, Invalid=2689, Unknown=0, NotChecked=0, Total=4032 [2023-02-17 02:33:42,371 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 250 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:33:42,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 172 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:33:42,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-02-17 02:33:42,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2023-02-17 02:33:42,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 20 states have return successors, (24), 21 states have call predecessors, (24), 4 states have call successors, (24) [2023-02-17 02:33:42,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2023-02-17 02:33:42,375 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 129 [2023-02-17 02:33:42,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:33:42,375 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2023-02-17 02:33:42,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.409090909090909) internal successors, (106), 44 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (53), 20 states have call predecessors, (53), 20 states have call successors, (53) [2023-02-17 02:33:42,376 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2023-02-17 02:33:42,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-02-17 02:33:42,377 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:33:42,377 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:33:42,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-17 02:33:42,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:33:42,584 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:33:42,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:33:42,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1602833076, now seen corresponding path program 10 times [2023-02-17 02:33:42,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:33:42,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337045430] [2023-02-17 02:33:42,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:33:42,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:33:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:42,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:33:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:42,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:43,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:43,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:43,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:43,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:43,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:43,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:43,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:43,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:43,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:43,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:43,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:43,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:43,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:44,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:44,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:44,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:44,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:44,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:44,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:44,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:44,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:44,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:44,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:44,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2023-02-17 02:33:44,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:33:44,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337045430] [2023-02-17 02:33:44,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337045430] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:33:44,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909325386] [2023-02-17 02:33:44,246 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 02:33:44,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:33:44,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:33:44,248 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:33:44,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-17 02:33:44,895 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 02:33:44,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:33:44,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-17 02:33:44,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:33:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2023-02-17 02:33:44,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:33:46,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-17 02:33:46,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909325386] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:33:46,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:33:46,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 43] total 48 [2023-02-17 02:33:46,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783604076] [2023-02-17 02:33:46,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:33:46,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-02-17 02:33:46,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:33:46,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-02-17 02:33:46,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=1659, Unknown=0, NotChecked=0, Total=2256 [2023-02-17 02:33:46,413 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 48 states, 48 states have (on average 2.4166666666666665) internal successors, (116), 48 states have internal predecessors, (116), 22 states have call successors, (22), 1 states have call predecessors, (22), 22 states have return successors, (59), 22 states have call predecessors, (59), 22 states have call successors, (59) [2023-02-17 02:33:46,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:33:46,657 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2023-02-17 02:33:46,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-17 02:33:46,657 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.4166666666666665) internal successors, (116), 48 states have internal predecessors, (116), 22 states have call successors, (22), 1 states have call predecessors, (22), 22 states have return successors, (59), 22 states have call predecessors, (59), 22 states have call successors, (59) Word has length 143 [2023-02-17 02:33:46,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:33:46,658 INFO L225 Difference]: With dead ends: 94 [2023-02-17 02:33:46,658 INFO L226 Difference]: Without dead ends: 88 [2023-02-17 02:33:46,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 261 SyntacticMatches, 40 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2028 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1609, Invalid=3221, Unknown=0, NotChecked=0, Total=4830 [2023-02-17 02:33:46,660 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 150 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:33:46,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 167 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:33:46,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-17 02:33:46,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2023-02-17 02:33:46,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 59 states have (on average 1.0847457627118644) internal successors, (64), 59 states have internal predecessors, (64), 4 states have call successors, (4), 3 states have call predecessors, (4), 22 states have return successors, (26), 23 states have call predecessors, (26), 4 states have call successors, (26) [2023-02-17 02:33:46,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2023-02-17 02:33:46,665 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 143 [2023-02-17 02:33:46,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:33:46,665 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2023-02-17 02:33:46,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.4166666666666665) internal successors, (116), 48 states have internal predecessors, (116), 22 states have call successors, (22), 1 states have call predecessors, (22), 22 states have return successors, (59), 22 states have call predecessors, (59), 22 states have call successors, (59) [2023-02-17 02:33:46,666 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2023-02-17 02:33:46,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-02-17 02:33:46,667 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:33:46,667 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:33:46,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-17 02:33:46,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-17 02:33:46,876 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:33:46,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:33:46,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1219250506, now seen corresponding path program 11 times [2023-02-17 02:33:46,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:33:46,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859420783] [2023-02-17 02:33:46,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:33:46,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:33:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:47,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:33:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:47,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:47,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:47,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:47,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:47,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:47,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:48,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:48,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:48,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:48,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:48,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:48,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:48,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:48,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:48,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:48,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:48,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:48,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:48,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:48,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:48,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-02-17 02:33:48,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:33:48,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859420783] [2023-02-17 02:33:48,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859420783] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:33:48,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829509521] [2023-02-17 02:33:48,698 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 02:33:48,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:33:48,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:33:48,700 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:33:48,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-17 02:33:49,684 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2023-02-17 02:33:49,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:33:49,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-17 02:33:49,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:33:49,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-02-17 02:33:49,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:33:51,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-02-17 02:33:51,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829509521] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:33:51,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:33:51,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 47] total 52 [2023-02-17 02:33:51,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535023260] [2023-02-17 02:33:51,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:33:51,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 02:33:51,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:33:51,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 02:33:51,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=1953, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 02:33:51,686 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand has 52 states, 52 states have (on average 2.423076923076923) internal successors, (126), 52 states have internal predecessors, (126), 24 states have call successors, (24), 1 states have call predecessors, (24), 24 states have return successors, (65), 24 states have call predecessors, (65), 24 states have call successors, (65) [2023-02-17 02:33:51,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:33:51,957 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2023-02-17 02:33:51,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-02-17 02:33:51,958 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.423076923076923) internal successors, (126), 52 states have internal predecessors, (126), 24 states have call successors, (24), 1 states have call predecessors, (24), 24 states have return successors, (65), 24 states have call predecessors, (65), 24 states have call successors, (65) Word has length 157 [2023-02-17 02:33:51,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:33:51,958 INFO L225 Difference]: With dead ends: 100 [2023-02-17 02:33:51,959 INFO L226 Difference]: Without dead ends: 94 [2023-02-17 02:33:51,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 287 SyntacticMatches, 44 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2429 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1899, Invalid=3801, Unknown=0, NotChecked=0, Total=5700 [2023-02-17 02:33:51,961 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 70 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:33:51,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 189 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:33:51,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-17 02:33:51,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2023-02-17 02:33:51,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 63 states have (on average 1.0793650793650793) internal successors, (68), 63 states have internal predecessors, (68), 4 states have call successors, (4), 3 states have call predecessors, (4), 24 states have return successors, (28), 25 states have call predecessors, (28), 4 states have call successors, (28) [2023-02-17 02:33:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2023-02-17 02:33:51,966 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 157 [2023-02-17 02:33:51,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:33:51,966 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2023-02-17 02:33:51,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.423076923076923) internal successors, (126), 52 states have internal predecessors, (126), 24 states have call successors, (24), 1 states have call predecessors, (24), 24 states have return successors, (65), 24 states have call predecessors, (65), 24 states have call successors, (65) [2023-02-17 02:33:51,967 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2023-02-17 02:33:51,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-02-17 02:33:51,968 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:33:51,968 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:33:51,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-17 02:33:52,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-17 02:33:52,173 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:33:52,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:33:52,173 INFO L85 PathProgramCache]: Analyzing trace with hash -954980936, now seen corresponding path program 12 times [2023-02-17 02:33:52,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:33:52,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599530757] [2023-02-17 02:33:52,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:33:52,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:33:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:52,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:33:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:52,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:52,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:52,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:52,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:53,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:53,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:53,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:53,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:53,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:53,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:53,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:53,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:54,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:54,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:54,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:54,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:54,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:54,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:54,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:54,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:54,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:54,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:54,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:54,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:54,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:54,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:54,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:54,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:54,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:54,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2023-02-17 02:33:54,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:33:54,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599530757] [2023-02-17 02:33:54,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599530757] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:33:54,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215504949] [2023-02-17 02:33:54,503 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 02:33:54,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:33:54,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:33:54,504 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:33:54,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-17 02:33:55,850 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2023-02-17 02:33:55,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:33:55,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 50 conjunts are in the unsatisfiable core [2023-02-17 02:33:55,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:33:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2023-02-17 02:33:55,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:33:58,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-02-17 02:33:58,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215504949] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:33:58,454 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:33:58,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 51] total 56 [2023-02-17 02:33:58,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129786088] [2023-02-17 02:33:58,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:33:58,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-02-17 02:33:58,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:33:58,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-02-17 02:33:58,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=809, Invalid=2271, Unknown=0, NotChecked=0, Total=3080 [2023-02-17 02:33:58,458 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand has 56 states, 56 states have (on average 2.4285714285714284) internal successors, (136), 56 states have internal predecessors, (136), 26 states have call successors, (26), 1 states have call predecessors, (26), 26 states have return successors, (71), 26 states have call predecessors, (71), 26 states have call successors, (71) [2023-02-17 02:33:58,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:33:58,761 INFO L93 Difference]: Finished difference Result 106 states and 117 transitions. [2023-02-17 02:33:58,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-02-17 02:33:58,762 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.4285714285714284) internal successors, (136), 56 states have internal predecessors, (136), 26 states have call successors, (26), 1 states have call predecessors, (26), 26 states have return successors, (71), 26 states have call predecessors, (71), 26 states have call successors, (71) Word has length 171 [2023-02-17 02:33:58,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:33:58,762 INFO L225 Difference]: With dead ends: 106 [2023-02-17 02:33:58,763 INFO L226 Difference]: Without dead ends: 100 [2023-02-17 02:33:58,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 313 SyntacticMatches, 48 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2866 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2213, Invalid=4429, Unknown=0, NotChecked=0, Total=6642 [2023-02-17 02:33:58,767 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 309 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:33:58,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 200 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:33:58,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-17 02:33:58,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2023-02-17 02:33:58,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 67 states have (on average 1.0746268656716418) internal successors, (72), 67 states have internal predecessors, (72), 4 states have call successors, (4), 3 states have call predecessors, (4), 26 states have return successors, (30), 27 states have call predecessors, (30), 4 states have call successors, (30) [2023-02-17 02:33:58,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2023-02-17 02:33:58,773 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 171 [2023-02-17 02:33:58,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:33:58,774 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2023-02-17 02:33:58,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.4285714285714284) internal successors, (136), 56 states have internal predecessors, (136), 26 states have call successors, (26), 1 states have call predecessors, (26), 26 states have return successors, (71), 26 states have call predecessors, (71), 26 states have call successors, (71) [2023-02-17 02:33:58,774 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2023-02-17 02:33:58,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-02-17 02:33:58,775 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:33:58,775 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:33:58,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-17 02:33:58,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-17 02:33:58,985 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:33:58,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:33:58,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1800173498, now seen corresponding path program 13 times [2023-02-17 02:33:58,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:33:58,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010242569] [2023-02-17 02:33:58,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:33:58,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:33:59,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:59,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:33:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:59,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:59,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:33:59,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:33:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:00,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:00,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:00,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:00,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:00,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:00,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:00,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:00,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:00,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:01,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:01,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:01,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:01,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:01,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:01,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:01,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:01,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:01,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:01,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:01,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:01,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:01,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:01,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2023-02-17 02:34:01,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:34:01,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010242569] [2023-02-17 02:34:01,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010242569] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:34:01,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022798758] [2023-02-17 02:34:01,593 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 02:34:01,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:34:01,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:34:01,594 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:34:01,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-17 02:34:03,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:03,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 54 conjunts are in the unsatisfiable core [2023-02-17 02:34:03,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:34:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2023-02-17 02:34:03,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:34:06,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-02-17 02:34:06,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022798758] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:34:06,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:34:06,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 55] total 60 [2023-02-17 02:34:06,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092047314] [2023-02-17 02:34:06,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:34:06,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-02-17 02:34:06,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:34:06,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-02-17 02:34:06,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=927, Invalid=2613, Unknown=0, NotChecked=0, Total=3540 [2023-02-17 02:34:06,492 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand has 60 states, 60 states have (on average 2.433333333333333) internal successors, (146), 60 states have internal predecessors, (146), 28 states have call successors, (28), 1 states have call predecessors, (28), 28 states have return successors, (77), 28 states have call predecessors, (77), 28 states have call successors, (77) [2023-02-17 02:34:06,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:34:06,843 INFO L93 Difference]: Finished difference Result 112 states and 123 transitions. [2023-02-17 02:34:06,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-02-17 02:34:06,843 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.433333333333333) internal successors, (146), 60 states have internal predecessors, (146), 28 states have call successors, (28), 1 states have call predecessors, (28), 28 states have return successors, (77), 28 states have call predecessors, (77), 28 states have call successors, (77) Word has length 185 [2023-02-17 02:34:06,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:34:06,844 INFO L225 Difference]: With dead ends: 112 [2023-02-17 02:34:06,844 INFO L226 Difference]: Without dead ends: 106 [2023-02-17 02:34:06,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 339 SyntacticMatches, 52 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3339 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2551, Invalid=5105, Unknown=0, NotChecked=0, Total=7656 [2023-02-17 02:34:06,847 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 447 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 02:34:06,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 220 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 02:34:06,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-17 02:34:06,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2023-02-17 02:34:06,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 71 states have internal predecessors, (76), 4 states have call successors, (4), 3 states have call predecessors, (4), 28 states have return successors, (32), 29 states have call predecessors, (32), 4 states have call successors, (32) [2023-02-17 02:34:06,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2023-02-17 02:34:06,850 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 185 [2023-02-17 02:34:06,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:34:06,851 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2023-02-17 02:34:06,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 2.433333333333333) internal successors, (146), 60 states have internal predecessors, (146), 28 states have call successors, (28), 1 states have call predecessors, (28), 28 states have return successors, (77), 28 states have call predecessors, (77), 28 states have call successors, (77) [2023-02-17 02:34:06,851 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2023-02-17 02:34:06,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-02-17 02:34:06,852 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:34:06,852 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:34:06,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-02-17 02:34:07,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-17 02:34:07,069 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:34:07,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:34:07,069 INFO L85 PathProgramCache]: Analyzing trace with hash -253850436, now seen corresponding path program 14 times [2023-02-17 02:34:07,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:34:07,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199587555] [2023-02-17 02:34:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:34:07,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:34:07,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:07,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:34:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:07,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:07,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:08,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:08,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:08,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:08,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:08,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:08,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:08,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:09,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:09,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:09,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:09,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:09,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:09,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:09,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:09,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:09,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:09,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:09,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:09,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:09,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:09,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:09,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:09,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:10,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:10,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:10,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:10,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:10,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:10,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:10,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:10,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2023-02-17 02:34:10,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:34:10,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199587555] [2023-02-17 02:34:10,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199587555] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:34:10,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195728611] [2023-02-17 02:34:10,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 02:34:10,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:34:10,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:34:10,194 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:34:10,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-17 02:34:12,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 02:34:12,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:34:12,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 58 conjunts are in the unsatisfiable core [2023-02-17 02:34:12,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:34:12,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2023-02-17 02:34:12,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:34:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-02-17 02:34:16,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195728611] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:34:16,468 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:34:16,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 59] total 64 [2023-02-17 02:34:16,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513508105] [2023-02-17 02:34:16,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:34:16,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-02-17 02:34:16,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:34:16,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-02-17 02:34:16,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1053, Invalid=2979, Unknown=0, NotChecked=0, Total=4032 [2023-02-17 02:34:16,471 INFO L87 Difference]: Start difference. First operand 104 states and 112 transitions. Second operand has 64 states, 64 states have (on average 2.4375) internal successors, (156), 64 states have internal predecessors, (156), 30 states have call successors, (30), 1 states have call predecessors, (30), 30 states have return successors, (83), 30 states have call predecessors, (83), 30 states have call successors, (83) [2023-02-17 02:34:16,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:34:16,833 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2023-02-17 02:34:16,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-02-17 02:34:16,834 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.4375) internal successors, (156), 64 states have internal predecessors, (156), 30 states have call successors, (30), 1 states have call predecessors, (30), 30 states have return successors, (83), 30 states have call predecessors, (83), 30 states have call successors, (83) Word has length 199 [2023-02-17 02:34:16,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:34:16,835 INFO L225 Difference]: With dead ends: 118 [2023-02-17 02:34:16,835 INFO L226 Difference]: Without dead ends: 112 [2023-02-17 02:34:16,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 365 SyntacticMatches, 56 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3848 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2913, Invalid=5829, Unknown=0, NotChecked=0, Total=8742 [2023-02-17 02:34:16,837 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 368 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:34:16,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 232 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:34:16,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-17 02:34:16,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2023-02-17 02:34:16,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 75 states have (on average 1.0666666666666667) internal successors, (80), 75 states have internal predecessors, (80), 4 states have call successors, (4), 3 states have call predecessors, (4), 30 states have return successors, (34), 31 states have call predecessors, (34), 4 states have call successors, (34) [2023-02-17 02:34:16,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2023-02-17 02:34:16,841 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 199 [2023-02-17 02:34:16,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:34:16,842 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2023-02-17 02:34:16,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.4375) internal successors, (156), 64 states have internal predecessors, (156), 30 states have call successors, (30), 1 states have call predecessors, (30), 30 states have return successors, (83), 30 states have call predecessors, (83), 30 states have call successors, (83) [2023-02-17 02:34:16,842 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2023-02-17 02:34:16,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-02-17 02:34:16,843 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:34:16,844 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:34:16,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-02-17 02:34:17,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:34:17,069 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:34:17,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:34:17,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1863075006, now seen corresponding path program 15 times [2023-02-17 02:34:17,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:34:17,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299651822] [2023-02-17 02:34:17,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:34:17,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:34:17,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:17,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:34:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:17,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:17,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:18,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:18,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:18,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:18,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:19,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:19,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:19,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:19,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:19,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:19,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:19,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:19,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:20,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:20,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:20,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:20,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:20,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:20,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:20,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:20,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:20,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:20,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:20,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:20,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:20,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:20,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:20,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:20,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:20,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2023-02-17 02:34:20,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:34:20,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299651822] [2023-02-17 02:34:20,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299651822] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:34:20,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513642817] [2023-02-17 02:34:20,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 02:34:20,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:34:20,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:34:20,879 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:34:20,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-17 02:34:24,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2023-02-17 02:34:24,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:34:24,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 62 conjunts are in the unsatisfiable core [2023-02-17 02:34:24,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:34:24,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2023-02-17 02:34:24,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:34:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-02-17 02:34:28,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513642817] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:34:28,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:34:28,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 63] total 68 [2023-02-17 02:34:28,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395910228] [2023-02-17 02:34:28,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:34:28,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-02-17 02:34:28,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:34:28,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-02-17 02:34:28,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1187, Invalid=3369, Unknown=0, NotChecked=0, Total=4556 [2023-02-17 02:34:28,852 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand has 68 states, 68 states have (on average 2.4411764705882355) internal successors, (166), 68 states have internal predecessors, (166), 32 states have call successors, (32), 1 states have call predecessors, (32), 32 states have return successors, (89), 32 states have call predecessors, (89), 32 states have call successors, (89) [2023-02-17 02:34:29,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:34:29,311 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2023-02-17 02:34:29,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-02-17 02:34:29,311 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.4411764705882355) internal successors, (166), 68 states have internal predecessors, (166), 32 states have call successors, (32), 1 states have call predecessors, (32), 32 states have return successors, (89), 32 states have call predecessors, (89), 32 states have call successors, (89) Word has length 213 [2023-02-17 02:34:29,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:34:29,313 INFO L225 Difference]: With dead ends: 124 [2023-02-17 02:34:29,314 INFO L226 Difference]: Without dead ends: 118 [2023-02-17 02:34:29,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 391 SyntacticMatches, 60 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4393 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3299, Invalid=6601, Unknown=0, NotChecked=0, Total=9900 [2023-02-17 02:34:29,315 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 401 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 02:34:29,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 240 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 02:34:29,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-02-17 02:34:29,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2023-02-17 02:34:29,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 79 states have internal predecessors, (84), 4 states have call successors, (4), 3 states have call predecessors, (4), 32 states have return successors, (36), 33 states have call predecessors, (36), 4 states have call successors, (36) [2023-02-17 02:34:29,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 124 transitions. [2023-02-17 02:34:29,319 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 124 transitions. Word has length 213 [2023-02-17 02:34:29,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:34:29,319 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 124 transitions. [2023-02-17 02:34:29,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.4411764705882355) internal successors, (166), 68 states have internal predecessors, (166), 32 states have call successors, (32), 1 states have call predecessors, (32), 32 states have return successors, (89), 32 states have call predecessors, (89), 32 states have call successors, (89) [2023-02-17 02:34:29,320 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 124 transitions. [2023-02-17 02:34:29,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-02-17 02:34:29,321 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:34:29,321 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:34:29,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-17 02:34:29,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-17 02:34:29,548 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:34:29,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:34:29,549 INFO L85 PathProgramCache]: Analyzing trace with hash 561479616, now seen corresponding path program 16 times [2023-02-17 02:34:29,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:34:29,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730146322] [2023-02-17 02:34:29,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:34:29,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:34:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:29,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:34:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:30,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:30,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:30,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:30,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:30,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:31,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:31,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:31,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:31,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:32,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:32,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:32,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:32,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:32,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:32,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:32,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:32,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:32,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:33,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:33,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:33,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:33,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:33,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:33,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:33,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:33,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:33,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:33,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:33,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:33,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:33,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:33,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:33,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:33,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2023-02-17 02:34:33,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:34:33,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730146322] [2023-02-17 02:34:33,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730146322] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:34:33,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059170396] [2023-02-17 02:34:33,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 02:34:33,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:34:33,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:34:33,859 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:34:33,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-17 02:34:38,054 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 02:34:38,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:34:38,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 66 conjunts are in the unsatisfiable core [2023-02-17 02:34:38,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:34:38,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2023-02-17 02:34:38,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:34:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-02-17 02:34:43,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059170396] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:34:43,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:34:43,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 67] total 72 [2023-02-17 02:34:43,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838112130] [2023-02-17 02:34:43,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:34:43,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-02-17 02:34:43,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:34:43,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-02-17 02:34:43,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1329, Invalid=3783, Unknown=0, NotChecked=0, Total=5112 [2023-02-17 02:34:43,881 INFO L87 Difference]: Start difference. First operand 116 states and 124 transitions. Second operand has 72 states, 72 states have (on average 2.4444444444444446) internal successors, (176), 72 states have internal predecessors, (176), 34 states have call successors, (34), 1 states have call predecessors, (34), 34 states have return successors, (95), 34 states have call predecessors, (95), 34 states have call successors, (95) [2023-02-17 02:34:44,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:34:44,424 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2023-02-17 02:34:44,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-02-17 02:34:44,425 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.4444444444444446) internal successors, (176), 72 states have internal predecessors, (176), 34 states have call successors, (34), 1 states have call predecessors, (34), 34 states have return successors, (95), 34 states have call predecessors, (95), 34 states have call successors, (95) Word has length 227 [2023-02-17 02:34:44,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:34:44,426 INFO L225 Difference]: With dead ends: 130 [2023-02-17 02:34:44,426 INFO L226 Difference]: Without dead ends: 124 [2023-02-17 02:34:44,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 417 SyntacticMatches, 64 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4974 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=3709, Invalid=7421, Unknown=0, NotChecked=0, Total=11130 [2023-02-17 02:34:44,428 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 896 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 02:34:44,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 277 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 02:34:44,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-02-17 02:34:44,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2023-02-17 02:34:44,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 83 states have (on average 1.0602409638554218) internal successors, (88), 83 states have internal predecessors, (88), 4 states have call successors, (4), 3 states have call predecessors, (4), 34 states have return successors, (38), 35 states have call predecessors, (38), 4 states have call successors, (38) [2023-02-17 02:34:44,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 130 transitions. [2023-02-17 02:34:44,434 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 130 transitions. Word has length 227 [2023-02-17 02:34:44,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:34:44,434 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 130 transitions. [2023-02-17 02:34:44,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 2.4444444444444446) internal successors, (176), 72 states have internal predecessors, (176), 34 states have call successors, (34), 1 states have call predecessors, (34), 34 states have return successors, (95), 34 states have call predecessors, (95), 34 states have call successors, (95) [2023-02-17 02:34:44,435 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 130 transitions. [2023-02-17 02:34:44,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-02-17 02:34:44,437 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:34:44,437 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:34:44,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-17 02:34:44,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-17 02:34:44,658 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:34:44,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:34:44,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1037951550, now seen corresponding path program 17 times [2023-02-17 02:34:44,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:34:44,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702399746] [2023-02-17 02:34:44,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:34:44,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:34:44,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:45,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:34:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:45,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:45,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:46,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:46,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:46,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:46,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:47,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:47,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:47,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:47,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:47,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:48,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:48,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:48,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:48,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:48,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:48,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:48,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:48,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:49,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:49,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:49,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:49,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:49,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:49,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:49,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:49,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:49,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:49,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:49,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:49,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:49,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:49,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:49,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:49,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:34:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:34:49,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2023-02-17 02:34:49,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:34:49,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702399746] [2023-02-17 02:34:49,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702399746] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:34:49,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529463665] [2023-02-17 02:34:49,849 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 02:34:49,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:34:49,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:34:49,850 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:34:49,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-17 02:34:55,241 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2023-02-17 02:34:55,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:34:55,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 70 conjunts are in the unsatisfiable core [2023-02-17 02:34:55,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:34:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2023-02-17 02:34:55,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:35:02,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-02-17 02:35:02,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529463665] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:35:02,440 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:35:02,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 71] total 76 [2023-02-17 02:35:02,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498187784] [2023-02-17 02:35:02,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:35:02,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-02-17 02:35:02,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:35:02,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-02-17 02:35:02,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1479, Invalid=4221, Unknown=0, NotChecked=0, Total=5700 [2023-02-17 02:35:02,443 INFO L87 Difference]: Start difference. First operand 122 states and 130 transitions. Second operand has 76 states, 76 states have (on average 2.4473684210526314) internal successors, (186), 76 states have internal predecessors, (186), 36 states have call successors, (36), 1 states have call predecessors, (36), 36 states have return successors, (101), 36 states have call predecessors, (101), 36 states have call successors, (101) [2023-02-17 02:35:03,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:35:03,058 INFO L93 Difference]: Finished difference Result 136 states and 147 transitions. [2023-02-17 02:35:03,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-02-17 02:35:03,059 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.4473684210526314) internal successors, (186), 76 states have internal predecessors, (186), 36 states have call successors, (36), 1 states have call predecessors, (36), 36 states have return successors, (101), 36 states have call predecessors, (101), 36 states have call successors, (101) Word has length 241 [2023-02-17 02:35:03,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:35:03,060 INFO L225 Difference]: With dead ends: 136 [2023-02-17 02:35:03,060 INFO L226 Difference]: Without dead ends: 130 [2023-02-17 02:35:03,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 443 SyntacticMatches, 68 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5591 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=4143, Invalid=8289, Unknown=0, NotChecked=0, Total=12432 [2023-02-17 02:35:03,062 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1167 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 02:35:03,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 284 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 02:35:03,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-02-17 02:35:03,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2023-02-17 02:35:03,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 87 states have (on average 1.0574712643678161) internal successors, (92), 87 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 36 states have return successors, (40), 37 states have call predecessors, (40), 4 states have call successors, (40) [2023-02-17 02:35:03,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 136 transitions. [2023-02-17 02:35:03,066 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 136 transitions. Word has length 241 [2023-02-17 02:35:03,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:35:03,066 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 136 transitions. [2023-02-17 02:35:03,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.4473684210526314) internal successors, (186), 76 states have internal predecessors, (186), 36 states have call successors, (36), 1 states have call predecessors, (36), 36 states have return successors, (101), 36 states have call predecessors, (101), 36 states have call successors, (101) [2023-02-17 02:35:03,067 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 136 transitions. [2023-02-17 02:35:03,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-02-17 02:35:03,068 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:35:03,068 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:35:03,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-17 02:35:03,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:35:03,281 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:35:03,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:35:03,282 INFO L85 PathProgramCache]: Analyzing trace with hash -479330620, now seen corresponding path program 18 times [2023-02-17 02:35:03,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:35:03,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302914366] [2023-02-17 02:35:03,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:35:03,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:35:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:03,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:35:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:04,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:04,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:05,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:05,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:05,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:05,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:06,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:06,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:06,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:06,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:06,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:06,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:07,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:07,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:07,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:07,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:07,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:08,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:08,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:08,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:08,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:08,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:08,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:08,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:08,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:08,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:09,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:09,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:09,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:09,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:09,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:09,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:09,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:09,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:09,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:09,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:09,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:09,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:09,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:09,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:09,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:09,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2023-02-17 02:35:09,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:35:09,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302914366] [2023-02-17 02:35:09,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302914366] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:35:09,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192804040] [2023-02-17 02:35:09,604 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 02:35:09,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:35:09,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:35:09,605 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:35:09,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-17 02:35:16,562 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 36 check-sat command(s) [2023-02-17 02:35:16,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:35:16,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 74 conjunts are in the unsatisfiable core [2023-02-17 02:35:16,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:35:16,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2023-02-17 02:35:16,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:35:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-02-17 02:35:25,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192804040] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:35:25,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:35:25,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 75] total 80 [2023-02-17 02:35:25,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301341822] [2023-02-17 02:35:25,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:35:25,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-02-17 02:35:25,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:35:25,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-02-17 02:35:25,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1637, Invalid=4683, Unknown=0, NotChecked=0, Total=6320 [2023-02-17 02:35:25,170 INFO L87 Difference]: Start difference. First operand 128 states and 136 transitions. Second operand has 80 states, 80 states have (on average 2.45) internal successors, (196), 80 states have internal predecessors, (196), 38 states have call successors, (38), 1 states have call predecessors, (38), 38 states have return successors, (107), 38 states have call predecessors, (107), 38 states have call successors, (107) [2023-02-17 02:35:25,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:35:25,616 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2023-02-17 02:35:25,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-02-17 02:35:25,616 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.45) internal successors, (196), 80 states have internal predecessors, (196), 38 states have call successors, (38), 1 states have call predecessors, (38), 38 states have return successors, (107), 38 states have call predecessors, (107), 38 states have call successors, (107) Word has length 255 [2023-02-17 02:35:25,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:35:25,617 INFO L225 Difference]: With dead ends: 142 [2023-02-17 02:35:25,617 INFO L226 Difference]: Without dead ends: 136 [2023-02-17 02:35:25,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 469 SyntacticMatches, 72 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6244 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4601, Invalid=9205, Unknown=0, NotChecked=0, Total=13806 [2023-02-17 02:35:25,620 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 187 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 02:35:25,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 292 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 02:35:25,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-02-17 02:35:25,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2023-02-17 02:35:25,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 91 states have (on average 1.054945054945055) internal successors, (96), 91 states have internal predecessors, (96), 4 states have call successors, (4), 3 states have call predecessors, (4), 38 states have return successors, (42), 39 states have call predecessors, (42), 4 states have call successors, (42) [2023-02-17 02:35:25,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 142 transitions. [2023-02-17 02:35:25,623 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 142 transitions. Word has length 255 [2023-02-17 02:35:25,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:35:25,624 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 142 transitions. [2023-02-17 02:35:25,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.45) internal successors, (196), 80 states have internal predecessors, (196), 38 states have call successors, (38), 1 states have call predecessors, (38), 38 states have return successors, (107), 38 states have call predecessors, (107), 38 states have call successors, (107) [2023-02-17 02:35:25,624 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 142 transitions. [2023-02-17 02:35:25,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-02-17 02:35:25,625 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:35:25,625 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:35:25,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-02-17 02:35:25,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:35:25,841 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:35:25,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:35:25,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1243415238, now seen corresponding path program 19 times [2023-02-17 02:35:25,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:35:25,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109958477] [2023-02-17 02:35:25,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:35:25,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:35:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:26,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:35:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:26,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:27,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:28,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:28,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:28,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:29,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:29,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:29,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:29,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:30,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:30,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:30,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:30,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:30,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:31,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:31,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:31,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:31,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:31,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:31,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:32,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:32,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:32,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:32,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:32,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:32,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:32,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:32,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:32,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:32,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:32,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:32,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:32,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:32,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:32,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:32,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:32,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2072 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2023-02-17 02:35:32,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:35:32,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109958477] [2023-02-17 02:35:32,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109958477] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:35:32,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309000235] [2023-02-17 02:35:32,946 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 02:35:32,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:35:32,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:35:32,947 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:35:32,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-17 02:35:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:41,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 78 conjunts are in the unsatisfiable core [2023-02-17 02:35:41,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:35:41,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2072 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2023-02-17 02:35:41,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:35:51,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-02-17 02:35:51,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309000235] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:35:51,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:35:51,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 79] total 84 [2023-02-17 02:35:51,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198731377] [2023-02-17 02:35:51,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:35:51,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2023-02-17 02:35:51,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:35:51,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2023-02-17 02:35:51,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1803, Invalid=5169, Unknown=0, NotChecked=0, Total=6972 [2023-02-17 02:35:51,920 INFO L87 Difference]: Start difference. First operand 134 states and 142 transitions. Second operand has 84 states, 84 states have (on average 2.4523809523809526) internal successors, (206), 84 states have internal predecessors, (206), 40 states have call successors, (40), 1 states have call predecessors, (40), 40 states have return successors, (113), 40 states have call predecessors, (113), 40 states have call successors, (113) [2023-02-17 02:35:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:35:52,559 INFO L93 Difference]: Finished difference Result 148 states and 159 transitions. [2023-02-17 02:35:52,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-02-17 02:35:52,560 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.4523809523809526) internal successors, (206), 84 states have internal predecessors, (206), 40 states have call successors, (40), 1 states have call predecessors, (40), 40 states have return successors, (113), 40 states have call predecessors, (113), 40 states have call successors, (113) Word has length 269 [2023-02-17 02:35:52,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:35:52,560 INFO L225 Difference]: With dead ends: 148 [2023-02-17 02:35:52,561 INFO L226 Difference]: Without dead ends: 142 [2023-02-17 02:35:52,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 495 SyntacticMatches, 76 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6933 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=5083, Invalid=10169, Unknown=0, NotChecked=0, Total=15252 [2023-02-17 02:35:52,562 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1118 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 02:35:52,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 314 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 02:35:52,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-02-17 02:35:52,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2023-02-17 02:35:52,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 95 states have (on average 1.0526315789473684) internal successors, (100), 95 states have internal predecessors, (100), 4 states have call successors, (4), 3 states have call predecessors, (4), 40 states have return successors, (44), 41 states have call predecessors, (44), 4 states have call successors, (44) [2023-02-17 02:35:52,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 148 transitions. [2023-02-17 02:35:52,567 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 148 transitions. Word has length 269 [2023-02-17 02:35:52,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:35:52,568 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 148 transitions. [2023-02-17 02:35:52,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 2.4523809523809526) internal successors, (206), 84 states have internal predecessors, (206), 40 states have call successors, (40), 1 states have call predecessors, (40), 40 states have return successors, (113), 40 states have call predecessors, (113), 40 states have call successors, (113) [2023-02-17 02:35:52,568 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 148 transitions. [2023-02-17 02:35:52,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-02-17 02:35:52,569 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:35:52,569 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:35:52,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-17 02:35:52,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:35:52,780 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:35:52,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:35:52,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1196493256, now seen corresponding path program 20 times [2023-02-17 02:35:52,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:35:52,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510033807] [2023-02-17 02:35:52,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:35:52,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:35:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:53,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:35:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:53,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:53,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:54,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:54,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:55,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:55,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:55,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:56,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:56,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:56,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:57,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:57,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:57,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:58,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:58,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:58,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:58,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:58,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:58,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:59,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:59,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:59,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:59,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:59,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:59,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:59,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:59,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:59,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:35:59,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:35:59,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:00,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:00,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:00,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:00,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:00,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:00,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:00,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:00,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:00,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:00,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:00,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:00,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:00,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:00,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:01,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:01,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:01,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2023-02-17 02:36:01,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:36:01,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510033807] [2023-02-17 02:36:01,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510033807] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:36:01,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891216845] [2023-02-17 02:36:01,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 02:36:01,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:36:01,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:36:01,121 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:36:01,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-17 02:36:11,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 02:36:11,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:36:11,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 82 conjunts are in the unsatisfiable core [2023-02-17 02:36:11,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:36:11,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2023-02-17 02:36:11,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:36:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2023-02-17 02:36:23,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891216845] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:36:23,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:36:23,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 83] total 88 [2023-02-17 02:36:23,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338100413] [2023-02-17 02:36:23,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:36:23,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2023-02-17 02:36:23,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:36:23,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2023-02-17 02:36:23,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1977, Invalid=5679, Unknown=0, NotChecked=0, Total=7656 [2023-02-17 02:36:23,282 INFO L87 Difference]: Start difference. First operand 140 states and 148 transitions. Second operand has 88 states, 88 states have (on average 2.4545454545454546) internal successors, (216), 88 states have internal predecessors, (216), 42 states have call successors, (42), 1 states have call predecessors, (42), 42 states have return successors, (119), 42 states have call predecessors, (119), 42 states have call successors, (119) [2023-02-17 02:36:23,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:36:23,866 INFO L93 Difference]: Finished difference Result 154 states and 165 transitions. [2023-02-17 02:36:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-02-17 02:36:23,869 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.4545454545454546) internal successors, (216), 88 states have internal predecessors, (216), 42 states have call successors, (42), 1 states have call predecessors, (42), 42 states have return successors, (119), 42 states have call predecessors, (119), 42 states have call successors, (119) Word has length 283 [2023-02-17 02:36:23,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:36:23,869 INFO L225 Difference]: With dead ends: 154 [2023-02-17 02:36:23,870 INFO L226 Difference]: Without dead ends: 148 [2023-02-17 02:36:23,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 521 SyntacticMatches, 80 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7658 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=5589, Invalid=11181, Unknown=0, NotChecked=0, Total=16770 [2023-02-17 02:36:23,872 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 557 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 599 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 02:36:23,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [599 Valid, 317 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 02:36:23,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-02-17 02:36:23,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2023-02-17 02:36:23,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 99 states have internal predecessors, (104), 4 states have call successors, (4), 3 states have call predecessors, (4), 42 states have return successors, (46), 43 states have call predecessors, (46), 4 states have call successors, (46) [2023-02-17 02:36:23,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2023-02-17 02:36:23,880 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 283 [2023-02-17 02:36:23,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:36:23,880 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2023-02-17 02:36:23,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.4545454545454546) internal successors, (216), 88 states have internal predecessors, (216), 42 states have call successors, (42), 1 states have call predecessors, (42), 42 states have return successors, (119), 42 states have call predecessors, (119), 42 states have call successors, (119) [2023-02-17 02:36:23,881 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2023-02-17 02:36:23,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-02-17 02:36:23,882 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:36:23,882 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:36:23,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-02-17 02:36:24,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-02-17 02:36:24,101 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:36:24,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:36:24,101 INFO L85 PathProgramCache]: Analyzing trace with hash 311161802, now seen corresponding path program 21 times [2023-02-17 02:36:24,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:36:24,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456661286] [2023-02-17 02:36:24,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:36:24,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:36:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:24,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:36:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:25,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:25,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:26,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:26,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:27,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:27,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:27,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:28,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:28,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:28,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:29,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:29,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:29,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:30,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:30,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:30,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:30,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:30,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:31,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:31,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:31,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:31,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:31,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:32,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:32,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:32,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:32,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:32,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:32,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:32,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:32,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:32,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:32,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:33,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:33,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:33,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:33,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:33,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:33,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:33,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:33,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:33,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:33,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:33,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:36:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:36:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 2542 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-02-17 02:36:33,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:36:33,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456661286] [2023-02-17 02:36:33,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456661286] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:36:33,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733613637] [2023-02-17 02:36:33,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 02:36:33,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:36:33,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:36:33,456 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:36:33,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-17 02:36:46,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2023-02-17 02:36:46,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 02:36:46,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 86 conjunts are in the unsatisfiable core [2023-02-17 02:36:46,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 02:36:46,334 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 2542 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-02-17 02:36:46,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 02:37:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-02-17 02:37:00,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733613637] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 02:37:00,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 02:37:00,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 87] total 92 [2023-02-17 02:37:00,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364032446] [2023-02-17 02:37:00,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 02:37:00,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2023-02-17 02:37:00,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 02:37:00,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2023-02-17 02:37:00,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2159, Invalid=6213, Unknown=0, NotChecked=0, Total=8372 [2023-02-17 02:37:00,173 INFO L87 Difference]: Start difference. First operand 146 states and 154 transitions. Second operand has 92 states, 92 states have (on average 2.4565217391304346) internal successors, (226), 92 states have internal predecessors, (226), 44 states have call successors, (44), 1 states have call predecessors, (44), 44 states have return successors, (125), 44 states have call predecessors, (125), 44 states have call successors, (125) [2023-02-17 02:37:00,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 02:37:00,911 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2023-02-17 02:37:00,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-02-17 02:37:00,912 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.4565217391304346) internal successors, (226), 92 states have internal predecessors, (226), 44 states have call successors, (44), 1 states have call predecessors, (44), 44 states have return successors, (125), 44 states have call predecessors, (125), 44 states have call successors, (125) Word has length 297 [2023-02-17 02:37:00,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 02:37:00,913 INFO L225 Difference]: With dead ends: 160 [2023-02-17 02:37:00,913 INFO L226 Difference]: Without dead ends: 154 [2023-02-17 02:37:00,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 547 SyntacticMatches, 84 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8419 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=6119, Invalid=12241, Unknown=0, NotChecked=0, Total=18360 [2023-02-17 02:37:00,916 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 937 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 502 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 502 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 02:37:00,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 346 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [502 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 02:37:00,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-02-17 02:37:00,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2023-02-17 02:37:00,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 103 states have internal predecessors, (108), 4 states have call successors, (4), 3 states have call predecessors, (4), 44 states have return successors, (48), 45 states have call predecessors, (48), 4 states have call successors, (48) [2023-02-17 02:37:00,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 160 transitions. [2023-02-17 02:37:00,920 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 160 transitions. Word has length 297 [2023-02-17 02:37:00,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 02:37:00,921 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 160 transitions. [2023-02-17 02:37:00,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 92 states have (on average 2.4565217391304346) internal successors, (226), 92 states have internal predecessors, (226), 44 states have call successors, (44), 1 states have call predecessors, (44), 44 states have return successors, (125), 44 states have call predecessors, (125), 44 states have call successors, (125) [2023-02-17 02:37:00,921 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 160 transitions. [2023-02-17 02:37:00,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-02-17 02:37:00,922 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 02:37:00,922 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 02:37:01,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-02-17 02:37:01,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-02-17 02:37:01,145 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 02:37:01,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 02:37:01,145 INFO L85 PathProgramCache]: Analyzing trace with hash 598712524, now seen corresponding path program 22 times [2023-02-17 02:37:01,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 02:37:01,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19448698] [2023-02-17 02:37:01,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 02:37:01,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 02:37:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:02,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 02:37:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:02,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:03,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:03,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:04,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:04,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:05,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:05,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:06,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:06,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:07,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:07,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:07,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:07,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:08,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:08,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:08,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:08,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:09,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:09,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:09,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:09,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:09,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:10,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:10,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:10,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:10,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:10,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:10,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:10,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:11,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:11,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:11,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:11,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:11,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:11,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:11,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:11,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:11,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:11,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:11,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:11,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:11,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:11,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:11,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:11,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:11,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-17 02:37:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 02:37:11,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2023-02-17 02:37:11,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 02:37:11,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19448698] [2023-02-17 02:37:11,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19448698] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 02:37:11,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095444856] [2023-02-17 02:37:11,831 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 02:37:11,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 02:37:11,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 02:37:11,833 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 02:37:11,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process