./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 [2023-02-18 04:18:56,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 04:18:56,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 04:18:56,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 04:18:56,298 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 04:18:56,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 04:18:56,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 04:18:56,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 04:18:56,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 04:18:56,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 04:18:56,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 04:18:56,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 04:18:56,310 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 04:18:56,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 04:18:56,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 04:18:56,314 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 04:18:56,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 04:18:56,317 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 04:18:56,319 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 04:18:56,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 04:18:56,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 04:18:56,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 04:18:56,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 04:18:56,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 04:18:56,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 04:18:56,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 04:18:56,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 04:18:56,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 04:18:56,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 04:18:56,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 04:18:56,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 04:18:56,336 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 04:18:56,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 04:18:56,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 04:18:56,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 04:18:56,339 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 04:18:56,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 04:18:56,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 04:18:56,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 04:18:56,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 04:18:56,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 04:18:56,342 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 04:18:56,365 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 04:18:56,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 04:18:56,369 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 04:18:56,369 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 04:18:56,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 04:18:56,370 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 04:18:56,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 04:18:56,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 04:18:56,371 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 04:18:56,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 04:18:56,372 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 04:18:56,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 04:18:56,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 04:18:56,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 04:18:56,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 04:18:56,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 04:18:56,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 04:18:56,373 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 04:18:56,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 04:18:56,373 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 04:18:56,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 04:18:56,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 04:18:56,373 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 04:18:56,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 04:18:56,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 04:18:56,374 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 04:18:56,374 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 04:18:56,374 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 04:18:56,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 04:18:56,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 04:18:56,375 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 04:18:56,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 04:18:56,375 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 04:18:56,375 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 04:18:56,376 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 04:18:56,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b4726bd085117d6d28f7ec87f442bbec9d0d87c17bc39b8147695c8c5a6ec7b [2023-02-18 04:18:56,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 04:18:56,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 04:18:56,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 04:18:56,602 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 04:18:56,603 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 04:18:56,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Addition03-1.c [2023-02-18 04:18:57,623 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 04:18:57,771 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 04:18:57,772 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Addition03-1.c [2023-02-18 04:18:57,776 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d41509ccd/dcec55a17aa841319273fcdb6ab10e16/FLAG09384d99c [2023-02-18 04:18:57,789 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d41509ccd/dcec55a17aa841319273fcdb6ab10e16 [2023-02-18 04:18:57,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 04:18:57,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 04:18:57,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 04:18:57,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 04:18:57,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 04:18:57,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:18:57" (1/1) ... [2023-02-18 04:18:57,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e32c49b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:57, skipping insertion in model container [2023-02-18 04:18:57,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:18:57" (1/1) ... [2023-02-18 04:18:57,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 04:18:57,818 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 04:18:57,939 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] [2023-02-18 04:18:57,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 04:18:57,954 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 04:18:57,968 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] [2023-02-18 04:18:57,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 04:18:57,980 INFO L208 MainTranslator]: Completed translation [2023-02-18 04:18:57,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:57 WrapperNode [2023-02-18 04:18:57,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 04:18:57,982 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 04:18:57,982 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 04:18:57,982 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 04:18:57,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:57" (1/1) ... [2023-02-18 04:18:57,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:57" (1/1) ... [2023-02-18 04:18:58,003 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2023-02-18 04:18:58,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 04:18:58,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 04:18:58,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 04:18:58,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 04:18:58,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:57" (1/1) ... [2023-02-18 04:18:58,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:57" (1/1) ... [2023-02-18 04:18:58,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:57" (1/1) ... [2023-02-18 04:18:58,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:57" (1/1) ... [2023-02-18 04:18:58,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:57" (1/1) ... [2023-02-18 04:18:58,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:57" (1/1) ... [2023-02-18 04:18:58,021 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:57" (1/1) ... [2023-02-18 04:18:58,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:57" (1/1) ... [2023-02-18 04:18:58,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 04:18:58,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 04:18:58,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 04:18:58,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 04:18:58,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:57" (1/1) ... [2023-02-18 04:18:58,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 04:18:58,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:18:58,056 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) [2023-02-18 04:18:58,065 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 [2023-02-18 04:18:58,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 04:18:58,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 04:18:58,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 04:18:58,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 04:18:58,104 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2023-02-18 04:18:58,107 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2023-02-18 04:18:58,152 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 04:18:58,153 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 04:18:58,234 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 04:18:58,238 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 04:18:58,238 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-18 04:18:58,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:18:58 BoogieIcfgContainer [2023-02-18 04:18:58,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 04:18:58,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 04:18:58,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 04:18:58,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 04:18:58,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 04:18:57" (1/3) ... [2023-02-18 04:18:58,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7aaff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:18:58, skipping insertion in model container [2023-02-18 04:18:58,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:18:57" (2/3) ... [2023-02-18 04:18:58,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7aaff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:18:58, skipping insertion in model container [2023-02-18 04:18:58,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:18:58" (3/3) ... [2023-02-18 04:18:58,246 INFO L112 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2023-02-18 04:18:58,257 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 04:18:58,258 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 04:18:58,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 04:18:58,294 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;@7310611d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 04:18:58,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 04:18:58,298 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) [2023-02-18 04:18:58,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 04:18:58,303 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:18:58,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:18:58,304 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:18:58,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:18:58,308 INFO L85 PathProgramCache]: Analyzing trace with hash -100249854, now seen corresponding path program 1 times [2023-02-18 04:18:58,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:18:58,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243477731] [2023-02-18 04:18:58,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:18:58,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:18:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:18:58,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:18:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:18:58,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:18:58,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:18:58,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243477731] [2023-02-18 04:18:58,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243477731] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:18:58,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:18:58,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 04:18:58,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762437254] [2023-02-18 04:18:58,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:18:58,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 04:18:58,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:18:58,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 04:18:58,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 04:18:58,556 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) [2023-02-18 04:18:58,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:18:58,640 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2023-02-18 04:18:58,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 04:18:58,646 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 [2023-02-18 04:18:58,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:18:58,652 INFO L225 Difference]: With dead ends: 32 [2023-02-18 04:18:58,652 INFO L226 Difference]: Without dead ends: 19 [2023-02-18 04:18:58,654 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 [2023-02-18 04:18:58,657 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:18:58,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 40 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 04:18:58,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-18 04:18:58,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-18 04:18:58,682 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) [2023-02-18 04:18:58,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2023-02-18 04:18:58,685 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2023-02-18 04:18:58,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:18:58,686 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2023-02-18 04:18:58,686 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) [2023-02-18 04:18:58,686 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2023-02-18 04:18:58,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 04:18:58,687 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:18:58,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:18:58,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 04:18:58,688 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:18:58,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:18:58,689 INFO L85 PathProgramCache]: Analyzing trace with hash -2083914533, now seen corresponding path program 1 times [2023-02-18 04:18:58,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:18:58,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940378492] [2023-02-18 04:18:58,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:18:58,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:18:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:18:58,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:18:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:18:58,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:18:58,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:18:58,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940378492] [2023-02-18 04:18:58,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940378492] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:18:58,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:18:58,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 04:18:58,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083074486] [2023-02-18 04:18:58,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:18:58,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 04:18:58,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:18:58,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 04:18:58,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-18 04:18:58,735 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) [2023-02-18 04:18:58,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:18:58,756 INFO L93 Difference]: Finished difference Result 29 states and 37 transitions. [2023-02-18 04:18:58,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 04:18:58,756 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 [2023-02-18 04:18:58,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:18:58,757 INFO L225 Difference]: With dead ends: 29 [2023-02-18 04:18:58,757 INFO L226 Difference]: Without dead ends: 21 [2023-02-18 04:18:58,758 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 [2023-02-18 04:18:58,759 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 [2023-02-18 04:18:58,759 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] [2023-02-18 04:18:58,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-02-18 04:18:58,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2023-02-18 04:18:58,763 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) [2023-02-18 04:18:58,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-02-18 04:18:58,764 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2023-02-18 04:18:58,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:18:58,764 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-02-18 04:18:58,765 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) [2023-02-18 04:18:58,765 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-02-18 04:18:58,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 04:18:58,766 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:18:58,766 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:18:58,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 04:18:58,766 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:18:58,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:18:58,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1402250658, now seen corresponding path program 1 times [2023-02-18 04:18:58,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:18:58,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807789937] [2023-02-18 04:18:58,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:18:58,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:18:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:18:58,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:18:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:18:58,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:18:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:18:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 04:18:58,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:18:58,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807789937] [2023-02-18 04:18:58,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807789937] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:18:58,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281739721] [2023-02-18 04:18:58,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:18:58,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:18:58,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:18:58,893 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) [2023-02-18 04:18:58,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 04:18:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:18:58,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 04:18:58,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:18:59,023 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 04:18:59,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:18:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:18:59,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281739721] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:18:59,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:18:59,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2023-02-18 04:18:59,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340800447] [2023-02-18 04:18:59,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:18:59,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 04:18:59,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:18:59,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 04:18:59,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-02-18 04:18:59,136 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) [2023-02-18 04:18:59,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:18:59,249 INFO L93 Difference]: Finished difference Result 54 states and 75 transitions. [2023-02-18 04:18:59,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 04:18:59,250 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 [2023-02-18 04:18:59,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:18:59,252 INFO L225 Difference]: With dead ends: 54 [2023-02-18 04:18:59,252 INFO L226 Difference]: Without dead ends: 34 [2023-02-18 04:18:59,253 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 [2023-02-18 04:18:59,256 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 [2023-02-18 04:18:59,257 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] [2023-02-18 04:18:59,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-18 04:18:59,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2023-02-18 04:18:59,266 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) [2023-02-18 04:18:59,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2023-02-18 04:18:59,268 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 17 [2023-02-18 04:18:59,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:18:59,269 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2023-02-18 04:18:59,269 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) [2023-02-18 04:18:59,269 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2023-02-18 04:18:59,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-18 04:18:59,271 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:18:59,271 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:18:59,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 04:18:59,476 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 [2023-02-18 04:18:59,477 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:18:59,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:18:59,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1901242716, now seen corresponding path program 2 times [2023-02-18 04:18:59,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:18:59,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384441859] [2023-02-18 04:18:59,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:18:59,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:18:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:18:59,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:18:59,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:18:59,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:18:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:18:59,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:18:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:18:59,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:18:59,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:18:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-18 04:18:59,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:18:59,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384441859] [2023-02-18 04:18:59,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384441859] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:18:59,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581521684] [2023-02-18 04:18:59,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 04:18:59,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:18:59,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:18:59,726 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) [2023-02-18 04:18:59,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 04:18:59,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 04:18:59,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:18:59,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-18 04:18:59,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:18:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-18 04:18:59,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:18:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 04:18:59,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581521684] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:18:59,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:18:59,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 11] total 16 [2023-02-18 04:18:59,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968629651] [2023-02-18 04:18:59,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:18:59,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-18 04:18:59,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:18:59,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-18 04:18:59,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-02-18 04:18:59,893 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) [2023-02-18 04:18:59,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:18:59,970 INFO L93 Difference]: Finished difference Result 46 states and 57 transitions. [2023-02-18 04:18:59,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 04:18:59,971 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 [2023-02-18 04:18:59,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:18:59,972 INFO L225 Difference]: With dead ends: 46 [2023-02-18 04:18:59,972 INFO L226 Difference]: Without dead ends: 40 [2023-02-18 04:18:59,972 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 [2023-02-18 04:18:59,973 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, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:18:59,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 63 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 04:18:59,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-18 04:18:59,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2023-02-18 04:18:59,978 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) [2023-02-18 04:18:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2023-02-18 04:18:59,978 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 31 [2023-02-18 04:18:59,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:18:59,979 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2023-02-18 04:18:59,979 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) [2023-02-18 04:18:59,979 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2023-02-18 04:18:59,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-02-18 04:18:59,980 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:18:59,980 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:18:59,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-18 04:19:00,185 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 [2023-02-18 04:19:00,187 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:19:00,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:19:00,188 INFO L85 PathProgramCache]: Analyzing trace with hash -2146751834, now seen corresponding path program 3 times [2023-02-18 04:19:00,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:19:00,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556736287] [2023-02-18 04:19:00,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:19:00,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:19:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:00,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:19:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:00,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:00,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:00,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:00,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:00,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:00,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:00,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:00,561 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-02-18 04:19:00,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:19:00,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556736287] [2023-02-18 04:19:00,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556736287] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:19:00,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722450456] [2023-02-18 04:19:00,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 04:19:00,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:19:00,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:19:00,566 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) [2023-02-18 04:19:00,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 04:19:00,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-18 04:19:00,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:19:00,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-18 04:19:00,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:19:00,639 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-02-18 04:19:00,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:19:00,785 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 04:19:00,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722450456] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:19:00,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:19:00,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 15] total 20 [2023-02-18 04:19:00,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231919625] [2023-02-18 04:19:00,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:19:00,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-18 04:19:00,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:19:00,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-18 04:19:00,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-02-18 04:19:00,787 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) [2023-02-18 04:19:00,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:19:00,897 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2023-02-18 04:19:00,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-18 04:19:00,898 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 [2023-02-18 04:19:00,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:19:00,899 INFO L225 Difference]: With dead ends: 52 [2023-02-18 04:19:00,899 INFO L226 Difference]: Without dead ends: 46 [2023-02-18 04:19:00,899 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 [2023-02-18 04:19:00,900 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 [2023-02-18 04:19:00,900 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] [2023-02-18 04:19:00,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-02-18 04:19:00,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2023-02-18 04:19:00,904 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) [2023-02-18 04:19:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2023-02-18 04:19:00,905 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 45 [2023-02-18 04:19:00,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:19:00,905 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2023-02-18 04:19:00,906 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) [2023-02-18 04:19:00,906 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2023-02-18 04:19:00,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-18 04:19:00,907 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:19:00,907 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:19:00,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 04:19:01,112 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 [2023-02-18 04:19:01,113 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:19:01,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:19:01,113 INFO L85 PathProgramCache]: Analyzing trace with hash -489684568, now seen corresponding path program 4 times [2023-02-18 04:19:01,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:19:01,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460322224] [2023-02-18 04:19:01,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:19:01,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:19:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:01,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:19:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:01,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:01,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:01,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:01,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:01,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:01,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:01,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-02-18 04:19:01,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:19:01,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460322224] [2023-02-18 04:19:01,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460322224] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:19:01,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [494244943] [2023-02-18 04:19:01,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 04:19:01,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:19:01,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:19:01,487 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) [2023-02-18 04:19:01,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 04:19:01,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 04:19:01,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:19:01,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-18 04:19:01,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:19:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-02-18 04:19:01,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:19:01,817 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-18 04:19:01,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [494244943] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:19:01,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:19:01,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 19] total 24 [2023-02-18 04:19:01,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106433619] [2023-02-18 04:19:01,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:19:01,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-18 04:19:01,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:19:01,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-18 04:19:01,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2023-02-18 04:19:01,821 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) [2023-02-18 04:19:01,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:19:01,930 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2023-02-18 04:19:01,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-18 04:19:01,931 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 [2023-02-18 04:19:01,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:19:01,937 INFO L225 Difference]: With dead ends: 58 [2023-02-18 04:19:01,937 INFO L226 Difference]: Without dead ends: 52 [2023-02-18 04:19:01,938 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 [2023-02-18 04:19:01,940 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 [2023-02-18 04:19:01,940 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] [2023-02-18 04:19:01,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-18 04:19:01,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2023-02-18 04:19:01,951 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) [2023-02-18 04:19:01,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2023-02-18 04:19:01,952 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 59 [2023-02-18 04:19:01,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:19:01,952 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2023-02-18 04:19:01,952 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) [2023-02-18 04:19:01,952 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2023-02-18 04:19:01,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-02-18 04:19:01,955 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:19:01,955 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:19:01,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 04:19:02,162 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 [2023-02-18 04:19:02,162 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:19:02,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:19:02,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1199719510, now seen corresponding path program 5 times [2023-02-18 04:19:02,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:19:02,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490727316] [2023-02-18 04:19:02,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:19:02,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:19:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:02,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:19:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:02,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:02,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:02,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:02,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:02,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:02,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:02,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:02,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:02,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:02,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:02,598 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-02-18 04:19:02,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:19:02,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490727316] [2023-02-18 04:19:02,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490727316] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:19:02,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307540491] [2023-02-18 04:19:02,599 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 04:19:02,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:19:02,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:19:02,600 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) [2023-02-18 04:19:02,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 04:19:02,714 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-02-18 04:19:02,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:19:02,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-18 04:19:02,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:19:02,741 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-02-18 04:19:02,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:19:03,080 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-18 04:19:03,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307540491] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:19:03,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:19:03,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 23] total 28 [2023-02-18 04:19:03,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155086822] [2023-02-18 04:19:03,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:19:03,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-18 04:19:03,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:19:03,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-18 04:19:03,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2023-02-18 04:19:03,083 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) [2023-02-18 04:19:03,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:19:03,215 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2023-02-18 04:19:03,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-18 04:19:03,216 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 [2023-02-18 04:19:03,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:19:03,217 INFO L225 Difference]: With dead ends: 64 [2023-02-18 04:19:03,217 INFO L226 Difference]: Without dead ends: 58 [2023-02-18 04:19:03,218 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 [2023-02-18 04:19:03,219 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 [2023-02-18 04:19:03,219 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] [2023-02-18 04:19:03,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-02-18 04:19:03,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2023-02-18 04:19:03,223 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) [2023-02-18 04:19:03,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2023-02-18 04:19:03,224 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 73 [2023-02-18 04:19:03,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:19:03,224 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2023-02-18 04:19:03,224 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) [2023-02-18 04:19:03,224 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2023-02-18 04:19:03,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-02-18 04:19:03,225 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:19:03,225 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:19:03,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 04:19:03,430 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 [2023-02-18 04:19:03,431 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:19:03,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:19:03,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1560921940, now seen corresponding path program 6 times [2023-02-18 04:19:03,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:19:03,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192881729] [2023-02-18 04:19:03,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:19:03,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:19:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:03,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:19:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:03,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:03,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:03,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:03,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:03,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:03,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:03,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:03,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:03,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:03,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:04,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:04,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:04,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:04,041 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-02-18 04:19:04,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:19:04,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192881729] [2023-02-18 04:19:04,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192881729] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:19:04,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836147146] [2023-02-18 04:19:04,041 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 04:19:04,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:19:04,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:19:04,043 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) [2023-02-18 04:19:04,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 04:19:04,202 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2023-02-18 04:19:04,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:19:04,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-18 04:19:04,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:19:04,242 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-02-18 04:19:04,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:19:04,714 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-02-18 04:19:04,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836147146] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:19:04,714 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:19:04,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 27] total 32 [2023-02-18 04:19:04,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007080351] [2023-02-18 04:19:04,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:19:04,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-02-18 04:19:04,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:19:04,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-02-18 04:19:04,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=269, Invalid=723, Unknown=0, NotChecked=0, Total=992 [2023-02-18 04:19:04,716 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) [2023-02-18 04:19:04,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:19:04,854 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2023-02-18 04:19:04,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-18 04:19:04,854 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 [2023-02-18 04:19:04,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:19:04,855 INFO L225 Difference]: With dead ends: 70 [2023-02-18 04:19:04,855 INFO L226 Difference]: Without dead ends: 64 [2023-02-18 04:19:04,856 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 [2023-02-18 04:19:04,856 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 [2023-02-18 04:19:04,857 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] [2023-02-18 04:19:04,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-18 04:19:04,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2023-02-18 04:19:04,860 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) [2023-02-18 04:19:04,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2023-02-18 04:19:04,861 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 87 [2023-02-18 04:19:04,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:19:04,861 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2023-02-18 04:19:04,861 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) [2023-02-18 04:19:04,862 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2023-02-18 04:19:04,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-02-18 04:19:04,862 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:19:04,862 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:19:04,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 04:19:05,068 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 [2023-02-18 04:19:05,069 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:19:05,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:19:05,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1048271022, now seen corresponding path program 7 times [2023-02-18 04:19:05,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:19:05,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959362740] [2023-02-18 04:19:05,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:19:05,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:19:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:05,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:19:05,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:05,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:05,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:05,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:05,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:05,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:05,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:05,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:05,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:05,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:05,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:05,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:05,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:05,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:05,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-02-18 04:19:05,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:19:05,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959362740] [2023-02-18 04:19:05,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959362740] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:19:05,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165321663] [2023-02-18 04:19:05,953 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 04:19:05,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:19:05,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:19:05,955 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) [2023-02-18 04:19:05,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 04:19:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:06,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 30 conjunts are in the unsatisfiable core [2023-02-18 04:19:06,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:19:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-02-18 04:19:06,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:19:06,958 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-02-18 04:19:06,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165321663] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:19:06,958 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:19:06,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 31] total 36 [2023-02-18 04:19:06,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048456712] [2023-02-18 04:19:06,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:19:06,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-02-18 04:19:06,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:19:06,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-02-18 04:19:06,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=921, Unknown=0, NotChecked=0, Total=1260 [2023-02-18 04:19:06,961 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) [2023-02-18 04:19:07,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:19:07,148 INFO L93 Difference]: Finished difference Result 76 states and 87 transitions. [2023-02-18 04:19:07,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-18 04:19:07,148 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 [2023-02-18 04:19:07,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:19:07,149 INFO L225 Difference]: With dead ends: 76 [2023-02-18 04:19:07,149 INFO L226 Difference]: Without dead ends: 70 [2023-02-18 04:19:07,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 183 SyntacticMatches, 28 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=883, Invalid=1769, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 04:19:07,151 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 [2023-02-18 04:19:07,151 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] [2023-02-18 04:19:07,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-02-18 04:19:07,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2023-02-18 04:19:07,155 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) [2023-02-18 04:19:07,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2023-02-18 04:19:07,156 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 101 [2023-02-18 04:19:07,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:19:07,156 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2023-02-18 04:19:07,156 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) [2023-02-18 04:19:07,156 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2023-02-18 04:19:07,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-02-18 04:19:07,157 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:19:07,157 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:19:07,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-18 04:19:07,363 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 [2023-02-18 04:19:07,363 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:19:07,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:19:07,364 INFO L85 PathProgramCache]: Analyzing trace with hash 2075065264, now seen corresponding path program 8 times [2023-02-18 04:19:07,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:19:07,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382300857] [2023-02-18 04:19:07,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:19:07,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:19:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:07,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:19:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:07,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:07,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:07,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:07,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:07,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:08,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:08,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:08,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:08,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:08,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:08,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:08,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:08,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:08,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:08,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:08,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-02-18 04:19:08,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:19:08,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382300857] [2023-02-18 04:19:08,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382300857] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:19:08,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232266768] [2023-02-18 04:19:08,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 04:19:08,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:19:08,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:19:08,437 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) [2023-02-18 04:19:08,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 04:19:08,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 04:19:08,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:19:08,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 34 conjunts are in the unsatisfiable core [2023-02-18 04:19:08,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:19:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2023-02-18 04:19:08,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:19:09,649 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-02-18 04:19:09,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232266768] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:19:09,649 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:19:09,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 35] total 40 [2023-02-18 04:19:09,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793026750] [2023-02-18 04:19:09,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:19:09,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-02-18 04:19:09,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:19:09,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-02-18 04:19:09,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=1143, Unknown=0, NotChecked=0, Total=1560 [2023-02-18 04:19:09,652 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) [2023-02-18 04:19:09,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:19:09,839 INFO L93 Difference]: Finished difference Result 82 states and 93 transitions. [2023-02-18 04:19:09,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-18 04:19:09,840 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 [2023-02-18 04:19:09,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:19:09,840 INFO L225 Difference]: With dead ends: 82 [2023-02-18 04:19:09,841 INFO L226 Difference]: Without dead ends: 76 [2023-02-18 04:19:09,842 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 [2023-02-18 04:19:09,842 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 [2023-02-18 04:19:09,843 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] [2023-02-18 04:19:09,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-18 04:19:09,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2023-02-18 04:19:09,846 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) [2023-02-18 04:19:09,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 82 transitions. [2023-02-18 04:19:09,847 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 82 transitions. Word has length 115 [2023-02-18 04:19:09,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:19:09,847 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 82 transitions. [2023-02-18 04:19:09,847 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) [2023-02-18 04:19:09,847 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 82 transitions. [2023-02-18 04:19:09,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-02-18 04:19:09,848 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:19:09,848 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:19:09,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-18 04:19:10,071 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 [2023-02-18 04:19:10,072 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:19:10,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:19:10,072 INFO L85 PathProgramCache]: Analyzing trace with hash -107806286, now seen corresponding path program 9 times [2023-02-18 04:19:10,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:19:10,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131013202] [2023-02-18 04:19:10,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:19:10,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:19:10,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:10,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:19:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:10,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:10,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:10,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:10,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:10,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:10,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:10,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:10,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:10,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:11,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:11,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:11,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:11,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:11,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:11,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:11,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:11,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:11,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:11,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2023-02-18 04:19:11,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:19:11,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131013202] [2023-02-18 04:19:11,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131013202] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:19:11,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425203202] [2023-02-18 04:19:11,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 04:19:11,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:19:11,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:19:11,283 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) [2023-02-18 04:19:11,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 04:19:11,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2023-02-18 04:19:11,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:19:11,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-18 04:19:11,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:19:11,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2023-02-18 04:19:11,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:19:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-02-18 04:19:12,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425203202] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:19:12,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:19:12,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 39] total 44 [2023-02-18 04:19:12,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741029221] [2023-02-18 04:19:12,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:19:12,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-02-18 04:19:12,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:19:12,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-02-18 04:19:12,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=1389, Unknown=0, NotChecked=0, Total=1892 [2023-02-18 04:19:12,987 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) [2023-02-18 04:19:13,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:19:13,231 INFO L93 Difference]: Finished difference Result 88 states and 99 transitions. [2023-02-18 04:19:13,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-18 04:19:13,232 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 [2023-02-18 04:19:13,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:19:13,233 INFO L225 Difference]: With dead ends: 88 [2023-02-18 04:19:13,233 INFO L226 Difference]: Without dead ends: 82 [2023-02-18 04:19:13,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 235 SyntacticMatches, 36 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1663 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1343, Invalid=2689, Unknown=0, NotChecked=0, Total=4032 [2023-02-18 04:19:13,235 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 [2023-02-18 04:19:13,235 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] [2023-02-18 04:19:13,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-02-18 04:19:13,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2023-02-18 04:19:13,238 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) [2023-02-18 04:19:13,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2023-02-18 04:19:13,239 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 129 [2023-02-18 04:19:13,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:19:13,239 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2023-02-18 04:19:13,239 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) [2023-02-18 04:19:13,240 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2023-02-18 04:19:13,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-02-18 04:19:13,240 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:19:13,241 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:19:13,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-18 04:19:13,448 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 [2023-02-18 04:19:13,448 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:19:13,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:19:13,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1602833076, now seen corresponding path program 10 times [2023-02-18 04:19:13,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:19:13,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349037963] [2023-02-18 04:19:13,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:19:13,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:19:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:13,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:19:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:13,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:13,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:13,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:14,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:14,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:14,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:14,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:14,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:14,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:14,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:14,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:14,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:14,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:14,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:14,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:14,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:14,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:14,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:14,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:14,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:14,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:14,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2023-02-18 04:19:14,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:19:14,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349037963] [2023-02-18 04:19:14,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349037963] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:19:14,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494361435] [2023-02-18 04:19:14,974 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 04:19:14,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:19:14,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:19:14,975 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) [2023-02-18 04:19:15,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 04:19:15,677 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 04:19:15,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:19:15,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-18 04:19:15,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:19:15,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2023-02-18 04:19:15,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:19:17,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-18 04:19:17,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494361435] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:19:17,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:19:17,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 43] total 48 [2023-02-18 04:19:17,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554087409] [2023-02-18 04:19:17,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:19:17,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-02-18 04:19:17,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:19:17,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-02-18 04:19:17,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=1659, Unknown=0, NotChecked=0, Total=2256 [2023-02-18 04:19:17,235 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) [2023-02-18 04:19:17,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:19:17,459 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2023-02-18 04:19:17,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-18 04:19:17,460 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 [2023-02-18 04:19:17,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:19:17,461 INFO L225 Difference]: With dead ends: 94 [2023-02-18 04:19:17,461 INFO L226 Difference]: Without dead ends: 88 [2023-02-18 04:19:17,462 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 [2023-02-18 04:19:17,462 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 [2023-02-18 04:19:17,463 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] [2023-02-18 04:19:17,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-18 04:19:17,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2023-02-18 04:19:17,466 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) [2023-02-18 04:19:17,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2023-02-18 04:19:17,466 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 143 [2023-02-18 04:19:17,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:19:17,467 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2023-02-18 04:19:17,467 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) [2023-02-18 04:19:17,467 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2023-02-18 04:19:17,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-02-18 04:19:17,468 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:19:17,468 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:19:17,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-18 04:19:17,676 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 [2023-02-18 04:19:17,676 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:19:17,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:19:17,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1219250506, now seen corresponding path program 11 times [2023-02-18 04:19:17,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:19:17,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193162703] [2023-02-18 04:19:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:19:17,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:19:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:17,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:19:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:18,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:18,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:18,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:18,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:18,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:18,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:18,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:18,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:19,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:19,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:19,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:19,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:19,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:19,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:19,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:19,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:19,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:19,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:19,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:19,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:19,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:19,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:19,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:19,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:19,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-02-18 04:19:19,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:19:19,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193162703] [2023-02-18 04:19:19,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193162703] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:19:19,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444922265] [2023-02-18 04:19:19,508 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 04:19:19,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:19:19,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:19:19,509 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) [2023-02-18 04:19:19,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-18 04:19:20,505 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2023-02-18 04:19:20,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:19:20,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-18 04:19:20,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:19:20,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2023-02-18 04:19:20,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:19:22,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 1323 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-02-18 04:19:22,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444922265] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:19:22,536 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:19:22,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 47] total 52 [2023-02-18 04:19:22,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711475769] [2023-02-18 04:19:22,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:19:22,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-18 04:19:22,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:19:22,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-18 04:19:22,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=1953, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 04:19:22,539 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) [2023-02-18 04:19:22,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:19:22,810 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2023-02-18 04:19:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-02-18 04:19:22,811 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 [2023-02-18 04:19:22,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:19:22,812 INFO L225 Difference]: With dead ends: 100 [2023-02-18 04:19:22,812 INFO L226 Difference]: Without dead ends: 94 [2023-02-18 04:19:22,814 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 [2023-02-18 04:19:22,817 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 [2023-02-18 04:19:22,817 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] [2023-02-18 04:19:22,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-18 04:19:22,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2023-02-18 04:19:22,834 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) [2023-02-18 04:19:22,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2023-02-18 04:19:22,835 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 157 [2023-02-18 04:19:22,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:19:22,836 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2023-02-18 04:19:22,836 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) [2023-02-18 04:19:22,836 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2023-02-18 04:19:22,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-02-18 04:19:22,837 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:19:22,838 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:19:22,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-18 04:19:23,050 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 [2023-02-18 04:19:23,051 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:19:23,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:19:23,052 INFO L85 PathProgramCache]: Analyzing trace with hash -954980936, now seen corresponding path program 12 times [2023-02-18 04:19:23,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:19:23,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184110572] [2023-02-18 04:19:23,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:19:23,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:19:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:23,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:19:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:23,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:23,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:23,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:24,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:24,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:24,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:24,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:24,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:24,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:24,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:24,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:24,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:24,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:24,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:25,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:25,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:25,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:25,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:25,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:25,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:25,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:25,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:25,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:25,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:25,336 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2023-02-18 04:19:25,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:19:25,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184110572] [2023-02-18 04:19:25,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184110572] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:19:25,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363698424] [2023-02-18 04:19:25,338 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 04:19:25,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:19:25,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:19:25,355 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) [2023-02-18 04:19:25,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-18 04:19:26,919 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2023-02-18 04:19:26,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:19:26,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 50 conjunts are in the unsatisfiable core [2023-02-18 04:19:26,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:19:26,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2023-02-18 04:19:26,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:19:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1587 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-02-18 04:19:29,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363698424] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:19:29,374 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:19:29,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 51] total 56 [2023-02-18 04:19:29,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515618965] [2023-02-18 04:19:29,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:19:29,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-02-18 04:19:29,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:19:29,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-02-18 04:19:29,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=809, Invalid=2271, Unknown=0, NotChecked=0, Total=3080 [2023-02-18 04:19:29,377 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) [2023-02-18 04:19:29,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:19:29,701 INFO L93 Difference]: Finished difference Result 106 states and 117 transitions. [2023-02-18 04:19:29,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-02-18 04:19:29,701 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 [2023-02-18 04:19:29,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:19:29,702 INFO L225 Difference]: With dead ends: 106 [2023-02-18 04:19:29,702 INFO L226 Difference]: Without dead ends: 100 [2023-02-18 04:19:29,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 313 SyntacticMatches, 48 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2866 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2213, Invalid=4429, Unknown=0, NotChecked=0, Total=6642 [2023-02-18 04:19:29,704 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 [2023-02-18 04:19:29,704 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] [2023-02-18 04:19:29,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-18 04:19:29,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2023-02-18 04:19:29,707 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) [2023-02-18 04:19:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2023-02-18 04:19:29,707 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 171 [2023-02-18 04:19:29,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:19:29,708 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2023-02-18 04:19:29,708 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) [2023-02-18 04:19:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2023-02-18 04:19:29,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-02-18 04:19:29,709 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:19:29,709 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:19:29,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-02-18 04:19:29,920 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 [2023-02-18 04:19:29,920 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:19:29,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:19:29,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1800173498, now seen corresponding path program 13 times [2023-02-18 04:19:29,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:19:29,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907664189] [2023-02-18 04:19:29,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:19:29,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:19:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:30,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:19:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:30,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:30,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:30,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:30,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:30,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:31,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:31,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:31,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:31,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:31,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:31,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:31,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:31,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:31,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:31,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:32,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:32,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:32,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:32,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:32,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:32,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:32,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:32,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:32,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:32,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:32,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:32,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:32,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2023-02-18 04:19:32,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:19:32,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907664189] [2023-02-18 04:19:32,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907664189] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:19:32,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962351061] [2023-02-18 04:19:32,419 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 04:19:32,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:19:32,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:19:32,421 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) [2023-02-18 04:19:32,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-18 04:19:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:34,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 54 conjunts are in the unsatisfiable core [2023-02-18 04:19:34,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:19:34,529 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2023-02-18 04:19:34,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:19:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2200 backedges. 0 proven. 1875 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-02-18 04:19:37,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962351061] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:19:37,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:19:37,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 55] total 60 [2023-02-18 04:19:37,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410109755] [2023-02-18 04:19:37,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:19:37,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2023-02-18 04:19:37,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:19:37,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2023-02-18 04:19:37,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=927, Invalid=2613, Unknown=0, NotChecked=0, Total=3540 [2023-02-18 04:19:37,581 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) [2023-02-18 04:19:37,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:19:37,923 INFO L93 Difference]: Finished difference Result 112 states and 123 transitions. [2023-02-18 04:19:37,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-02-18 04:19:37,923 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 [2023-02-18 04:19:37,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:19:37,924 INFO L225 Difference]: With dead ends: 112 [2023-02-18 04:19:37,924 INFO L226 Difference]: Without dead ends: 106 [2023-02-18 04:19:37,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 339 SyntacticMatches, 52 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3339 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2551, Invalid=5105, Unknown=0, NotChecked=0, Total=7656 [2023-02-18 04:19:37,926 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 [2023-02-18 04:19:37,926 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] [2023-02-18 04:19:37,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-18 04:19:37,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2023-02-18 04:19:37,934 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) [2023-02-18 04:19:37,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 112 transitions. [2023-02-18 04:19:37,936 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 112 transitions. Word has length 185 [2023-02-18 04:19:37,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:19:37,937 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 112 transitions. [2023-02-18 04:19:37,938 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) [2023-02-18 04:19:37,938 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 112 transitions. [2023-02-18 04:19:37,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-02-18 04:19:37,939 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:19:37,939 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:19:37,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-02-18 04:19:38,159 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 [2023-02-18 04:19:38,160 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:19:38,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:19:38,161 INFO L85 PathProgramCache]: Analyzing trace with hash -253850436, now seen corresponding path program 14 times [2023-02-18 04:19:38,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:19:38,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733148371] [2023-02-18 04:19:38,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:19:38,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:19:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:38,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:19:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:38,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:38,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:39,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:39,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:39,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:39,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:39,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:39,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:40,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:40,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:40,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:40,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:40,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:40,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:40,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:40,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:40,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:40,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:40,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:40,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:41,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:41,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:41,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:41,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:41,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:41,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:41,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:41,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:41,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:41,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:41,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2023-02-18 04:19:41,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:19:41,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733148371] [2023-02-18 04:19:41,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733148371] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:19:41,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36977360] [2023-02-18 04:19:41,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 04:19:41,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:19:41,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:19:41,446 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) [2023-02-18 04:19:41,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-18 04:19:44,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 04:19:44,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:19:44,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 58 conjunts are in the unsatisfiable core [2023-02-18 04:19:44,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:19:44,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2023-02-18 04:19:44,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:19:48,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2565 backedges. 0 proven. 2187 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-02-18 04:19:48,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36977360] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:19:48,086 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:19:48,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 59] total 64 [2023-02-18 04:19:48,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907677504] [2023-02-18 04:19:48,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:19:48,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-02-18 04:19:48,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:19:48,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-02-18 04:19:48,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1053, Invalid=2979, Unknown=0, NotChecked=0, Total=4032 [2023-02-18 04:19:48,090 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) [2023-02-18 04:19:48,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:19:48,491 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2023-02-18 04:19:48,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-02-18 04:19:48,492 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 [2023-02-18 04:19:48,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:19:48,493 INFO L225 Difference]: With dead ends: 118 [2023-02-18 04:19:48,493 INFO L226 Difference]: Without dead ends: 112 [2023-02-18 04:19:48,495 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 [2023-02-18 04:19:48,495 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 [2023-02-18 04:19:48,495 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] [2023-02-18 04:19:48,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-18 04:19:48,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2023-02-18 04:19:48,498 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) [2023-02-18 04:19:48,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2023-02-18 04:19:48,499 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 199 [2023-02-18 04:19:48,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:19:48,499 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2023-02-18 04:19:48,499 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) [2023-02-18 04:19:48,499 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2023-02-18 04:19:48,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2023-02-18 04:19:48,500 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:19:48,501 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:19:48,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-18 04:19:48,722 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 [2023-02-18 04:19:48,722 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:19:48,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:19:48,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1863075006, now seen corresponding path program 15 times [2023-02-18 04:19:48,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:19:48,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876966120] [2023-02-18 04:19:48,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:19:48,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:19:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:49,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:19:49,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:49,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:49,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:49,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:50,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:50,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:50,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:50,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:50,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:50,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:50,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:50,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:51,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:51,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:51,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:51,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:51,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:51,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:51,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:51,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:51,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:51,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:51,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:51,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:52,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:52,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:52,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:52,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:52,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:52,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:52,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:52,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:52,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:52,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:52,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:52,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:19:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:19:52,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2023-02-18 04:19:52,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:19:52,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876966120] [2023-02-18 04:19:52,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876966120] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:19:52,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945255874] [2023-02-18 04:19:52,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 04:19:52,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:19:52,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:19:52,431 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) [2023-02-18 04:19:52,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-18 04:19:55,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2023-02-18 04:19:55,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:19:55,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 62 conjunts are in the unsatisfiable core [2023-02-18 04:19:55,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:19:56,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2023-02-18 04:19:56,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:20:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2958 backedges. 0 proven. 2523 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-02-18 04:20:00,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945255874] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:20:00,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:20:00,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 63] total 68 [2023-02-18 04:20:00,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78498546] [2023-02-18 04:20:00,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:20:00,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2023-02-18 04:20:00,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:20:00,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2023-02-18 04:20:00,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1187, Invalid=3369, Unknown=0, NotChecked=0, Total=4556 [2023-02-18 04:20:00,887 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) [2023-02-18 04:20:01,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:20:01,343 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2023-02-18 04:20:01,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-02-18 04:20:01,344 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 [2023-02-18 04:20:01,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:20:01,346 INFO L225 Difference]: With dead ends: 124 [2023-02-18 04:20:01,347 INFO L226 Difference]: Without dead ends: 118 [2023-02-18 04:20:01,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 391 SyntacticMatches, 60 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4393 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3299, Invalid=6601, Unknown=0, NotChecked=0, Total=9900 [2023-02-18 04:20:01,348 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 [2023-02-18 04:20:01,349 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] [2023-02-18 04:20:01,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2023-02-18 04:20:01,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2023-02-18 04:20:01,355 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) [2023-02-18 04:20:01,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 124 transitions. [2023-02-18 04:20:01,356 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 124 transitions. Word has length 213 [2023-02-18 04:20:01,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:20:01,356 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 124 transitions. [2023-02-18 04:20:01,357 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) [2023-02-18 04:20:01,357 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 124 transitions. [2023-02-18 04:20:01,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-02-18 04:20:01,361 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:20:01,362 INFO L195 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:20:01,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-18 04:20:01,579 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 [2023-02-18 04:20:01,579 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:20:01,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:20:01,579 INFO L85 PathProgramCache]: Analyzing trace with hash 561479616, now seen corresponding path program 16 times [2023-02-18 04:20:01,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:20:01,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509357880] [2023-02-18 04:20:01,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:01,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:20:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:01,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:20:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:02,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:02,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:02,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:03,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:03,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:03,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:03,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:03,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:04,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:04,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:04,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:04,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:04,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:04,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:04,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:04,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:05,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:05,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:05,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:05,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:05,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:05,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:05,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:05,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:05,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:05,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:05,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:05,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:05,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:05,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:05,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:05,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:05,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:05,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:05,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:05,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2023-02-18 04:20:05,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:20:05,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509357880] [2023-02-18 04:20:05,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509357880] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:20:05,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858760444] [2023-02-18 04:20:05,900 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 04:20:05,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:20:05,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:20:05,901 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) [2023-02-18 04:20:05,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-18 04:20:10,660 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 04:20:10,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:20:10,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 66 conjunts are in the unsatisfiable core [2023-02-18 04:20:10,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:20:10,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 1457 refuted. 0 times theorem prover too weak. 1922 trivial. 0 not checked. [2023-02-18 04:20:10,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:20:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3379 backedges. 0 proven. 2883 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-02-18 04:20:16,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858760444] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:20:16,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:20:16,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 67] total 72 [2023-02-18 04:20:16,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61398446] [2023-02-18 04:20:16,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:20:16,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2023-02-18 04:20:16,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:20:16,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2023-02-18 04:20:16,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1329, Invalid=3783, Unknown=0, NotChecked=0, Total=5112 [2023-02-18 04:20:16,514 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) [2023-02-18 04:20:16,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:20:16,993 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2023-02-18 04:20:16,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-02-18 04:20:16,993 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 [2023-02-18 04:20:16,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:20:17,000 INFO L225 Difference]: With dead ends: 130 [2023-02-18 04:20:17,000 INFO L226 Difference]: Without dead ends: 124 [2023-02-18 04:20:17,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 417 SyntacticMatches, 64 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4974 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3709, Invalid=7421, Unknown=0, NotChecked=0, Total=11130 [2023-02-18 04:20:17,010 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, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 04:20:17,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 277 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 04:20:17,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-02-18 04:20:17,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2023-02-18 04:20:17,015 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) [2023-02-18 04:20:17,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 130 transitions. [2023-02-18 04:20:17,017 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 130 transitions. Word has length 227 [2023-02-18 04:20:17,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:20:17,018 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 130 transitions. [2023-02-18 04:20:17,018 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) [2023-02-18 04:20:17,018 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 130 transitions. [2023-02-18 04:20:17,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-02-18 04:20:17,025 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:20:17,025 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:20:17,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-18 04:20:17,249 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 [2023-02-18 04:20:17,249 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:20:17,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:20:17,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1037951550, now seen corresponding path program 17 times [2023-02-18 04:20:17,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:20:17,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642494409] [2023-02-18 04:20:17,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:17,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:20:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:17,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:20:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:18,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:18,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:18,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:19,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:19,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:19,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:19,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:20,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:20,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:20,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:20,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:20,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:21,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:21,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:21,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:21,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:21,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:21,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:21,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:21,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:21,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:21,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:22,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:22,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:22,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:22,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:22,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:22,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:22,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:22,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:22,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:22,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:22,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:22,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:22,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:22,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2023-02-18 04:20:22,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:20:22,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642494409] [2023-02-18 04:20:22,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642494409] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:20:22,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13974380] [2023-02-18 04:20:22,513 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 04:20:22,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:20:22,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:20:22,514 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) [2023-02-18 04:20:22,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-18 04:20:28,786 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 34 check-sat command(s) [2023-02-18 04:20:28,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:20:28,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 70 conjunts are in the unsatisfiable core [2023-02-18 04:20:28,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:20:28,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 1650 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2023-02-18 04:20:28,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:20:35,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3828 backedges. 0 proven. 3267 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-02-18 04:20:35,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13974380] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:20:35,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:20:35,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 71] total 76 [2023-02-18 04:20:35,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833620629] [2023-02-18 04:20:35,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:20:35,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-02-18 04:20:35,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:20:35,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-02-18 04:20:35,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1479, Invalid=4221, Unknown=0, NotChecked=0, Total=5700 [2023-02-18 04:20:35,832 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) [2023-02-18 04:20:36,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:20:36,464 INFO L93 Difference]: Finished difference Result 136 states and 147 transitions. [2023-02-18 04:20:36,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-02-18 04:20:36,464 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 [2023-02-18 04:20:36,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:20:36,465 INFO L225 Difference]: With dead ends: 136 [2023-02-18 04:20:36,465 INFO L226 Difference]: Without dead ends: 130 [2023-02-18 04:20:36,467 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 [2023-02-18 04:20:36,467 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 [2023-02-18 04:20:36,467 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] [2023-02-18 04:20:36,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-02-18 04:20:36,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2023-02-18 04:20:36,470 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) [2023-02-18 04:20:36,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 136 transitions. [2023-02-18 04:20:36,471 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 136 transitions. Word has length 241 [2023-02-18 04:20:36,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:20:36,471 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 136 transitions. [2023-02-18 04:20:36,471 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) [2023-02-18 04:20:36,472 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 136 transitions. [2023-02-18 04:20:36,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-02-18 04:20:36,473 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:20:36,473 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:20:36,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-18 04:20:36,689 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 [2023-02-18 04:20:36,689 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:20:36,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:20:36,689 INFO L85 PathProgramCache]: Analyzing trace with hash -479330620, now seen corresponding path program 18 times [2023-02-18 04:20:36,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:20:36,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846724694] [2023-02-18 04:20:36,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:36,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:20:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:37,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:20:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:37,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:37,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:38,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:38,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:38,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:39,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:39,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:39,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:40,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:40,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:40,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:40,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:40,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:41,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:41,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:41,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:41,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:41,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:42,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:42,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:42,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:42,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:42,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:42,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:42,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:42,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:42,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:42,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:42,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:43,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:43,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:43,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:43,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:43,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:43,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:43,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:43,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:43,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:43,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:43,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:43,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:43,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:43,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2023-02-18 04:20:43,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:20:43,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846724694] [2023-02-18 04:20:43,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846724694] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:20:43,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034719612] [2023-02-18 04:20:43,521 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 04:20:43,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:20:43,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:20:43,522 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) [2023-02-18 04:20:43,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-18 04:20:50,689 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 36 check-sat command(s) [2023-02-18 04:20:50,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:20:50,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 74 conjunts are in the unsatisfiable core [2023-02-18 04:20:50,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:20:50,760 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 1855 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2023-02-18 04:20:50,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:20:59,007 INFO L134 CoverageAnalysis]: Checked inductivity of 4305 backedges. 0 proven. 3675 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2023-02-18 04:20:59,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034719612] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:20:59,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:20:59,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 75] total 80 [2023-02-18 04:20:59,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532901852] [2023-02-18 04:20:59,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:20:59,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-02-18 04:20:59,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:20:59,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-02-18 04:20:59,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1637, Invalid=4683, Unknown=0, NotChecked=0, Total=6320 [2023-02-18 04:20:59,011 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) [2023-02-18 04:20:59,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:20:59,522 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2023-02-18 04:20:59,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-02-18 04:20:59,523 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 [2023-02-18 04:20:59,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:20:59,524 INFO L225 Difference]: With dead ends: 142 [2023-02-18 04:20:59,524 INFO L226 Difference]: Without dead ends: 136 [2023-02-18 04:20:59,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 469 SyntacticMatches, 72 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6244 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=4601, Invalid=9205, Unknown=0, NotChecked=0, Total=13806 [2023-02-18 04:20:59,526 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 [2023-02-18 04:20:59,526 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] [2023-02-18 04:20:59,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-02-18 04:20:59,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 134. [2023-02-18 04:20:59,529 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) [2023-02-18 04:20:59,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 142 transitions. [2023-02-18 04:20:59,529 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 142 transitions. Word has length 255 [2023-02-18 04:20:59,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:20:59,530 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 142 transitions. [2023-02-18 04:20:59,530 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) [2023-02-18 04:20:59,530 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 142 transitions. [2023-02-18 04:20:59,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-02-18 04:20:59,531 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:20:59,531 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:20:59,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-02-18 04:20:59,735 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 [2023-02-18 04:20:59,736 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:20:59,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:20:59,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1243415238, now seen corresponding path program 19 times [2023-02-18 04:20:59,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:20:59,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871807431] [2023-02-18 04:20:59,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:59,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:20:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:00,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:21:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:00,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:01,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:01,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:01,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:02,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:02,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:02,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:03,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:03,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:03,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:03,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:03,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:03,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:04,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:04,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:04,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:04,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:05,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:05,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:05,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:05,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:05,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:05,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:05,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:05,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:05,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:06,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:06,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:06,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:06,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:06,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:06,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:06,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:06,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:06,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:06,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:06,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:06,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:06,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:06,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:06,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:06,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:06,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:06,759 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2072 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2023-02-18 04:21:06,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:21:06,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871807431] [2023-02-18 04:21:06,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871807431] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:21:06,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510811660] [2023-02-18 04:21:06,760 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 04:21:06,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:21:06,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:21:06,761 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) [2023-02-18 04:21:06,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-18 04:21:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:16,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 757 conjuncts, 78 conjunts are in the unsatisfiable core [2023-02-18 04:21:16,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:21:16,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 2072 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2023-02-18 04:21:16,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:21:26,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4810 backedges. 0 proven. 4107 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-02-18 04:21:26,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510811660] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:21:26,784 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:21:26,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 79] total 84 [2023-02-18 04:21:26,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621452975] [2023-02-18 04:21:26,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:21:26,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2023-02-18 04:21:26,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:21:26,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2023-02-18 04:21:26,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1803, Invalid=5169, Unknown=0, NotChecked=0, Total=6972 [2023-02-18 04:21:26,786 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) [2023-02-18 04:21:27,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:21:27,476 INFO L93 Difference]: Finished difference Result 148 states and 159 transitions. [2023-02-18 04:21:27,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-02-18 04:21:27,477 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 [2023-02-18 04:21:27,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:21:27,478 INFO L225 Difference]: With dead ends: 148 [2023-02-18 04:21:27,478 INFO L226 Difference]: Without dead ends: 142 [2023-02-18 04:21:27,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 495 SyntacticMatches, 76 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6933 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=5083, Invalid=10169, Unknown=0, NotChecked=0, Total=15252 [2023-02-18 04:21:27,480 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 [2023-02-18 04:21:27,480 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] [2023-02-18 04:21:27,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-02-18 04:21:27,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2023-02-18 04:21:27,484 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) [2023-02-18 04:21:27,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 148 transitions. [2023-02-18 04:21:27,488 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 148 transitions. Word has length 269 [2023-02-18 04:21:27,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:21:27,488 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 148 transitions. [2023-02-18 04:21:27,488 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) [2023-02-18 04:21:27,489 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 148 transitions. [2023-02-18 04:21:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2023-02-18 04:21:27,490 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:21:27,490 INFO L195 NwaCegarLoop]: trace histogram [40, 40, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:21:27,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-18 04:21:27,709 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 [2023-02-18 04:21:27,709 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:21:27,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:21:27,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1196493256, now seen corresponding path program 20 times [2023-02-18 04:21:27,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:21:27,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489189323] [2023-02-18 04:21:27,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:21:27,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:21:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:28,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:21:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:29,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:29,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:30,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:30,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:31,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:31,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:31,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:32,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:32,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:32,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:33,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:33,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:33,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:33,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:33,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:34,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:34,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:34,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:34,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:34,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:34,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:34,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:35,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:35,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:35,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:35,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:35,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:35,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:35,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:35,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:35,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:35,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:35,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:35,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:35,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:35,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:35,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:35,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:36,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:36,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:36,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:36,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:36,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:36,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:36,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:36,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:21:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:21:36,213 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2023-02-18 04:21:36,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:21:36,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489189323] [2023-02-18 04:21:36,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489189323] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:21:36,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356775895] [2023-02-18 04:21:36,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 04:21:36,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:21:36,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:21:36,225 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) [2023-02-18 04:21:36,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-18 04:21:48,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 04:21:48,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:21:48,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 82 conjunts are in the unsatisfiable core [2023-02-18 04:21:48,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:21:48,816 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 2301 refuted. 0 times theorem prover too weak. 3042 trivial. 0 not checked. [2023-02-18 04:21:48,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:22:00,646 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 0 proven. 4563 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2023-02-18 04:22:00,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356775895] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:22:00,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:22:00,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 83] total 88 [2023-02-18 04:22:00,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311341663] [2023-02-18 04:22:00,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:22:00,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2023-02-18 04:22:00,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:22:00,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2023-02-18 04:22:00,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1977, Invalid=5679, Unknown=0, NotChecked=0, Total=7656 [2023-02-18 04:22:00,649 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) [2023-02-18 04:22:01,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:22:01,264 INFO L93 Difference]: Finished difference Result 154 states and 165 transitions. [2023-02-18 04:22:01,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-02-18 04:22:01,266 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 [2023-02-18 04:22:01,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:22:01,269 INFO L225 Difference]: With dead ends: 154 [2023-02-18 04:22:01,269 INFO L226 Difference]: Without dead ends: 148 [2023-02-18 04:22:01,271 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 [2023-02-18 04:22:01,272 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 557 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2023-02-18 04:22:01,272 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] [2023-02-18 04:22:01,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-02-18 04:22:01,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2023-02-18 04:22:01,278 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) [2023-02-18 04:22:01,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 154 transitions. [2023-02-18 04:22:01,279 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 154 transitions. Word has length 283 [2023-02-18 04:22:01,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:22:01,280 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 154 transitions. [2023-02-18 04:22:01,280 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) [2023-02-18 04:22:01,280 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 154 transitions. [2023-02-18 04:22:01,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-02-18 04:22:01,281 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:22:01,281 INFO L195 NwaCegarLoop]: trace histogram [42, 42, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:22:01,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-02-18 04:22:01,498 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 [2023-02-18 04:22:01,498 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:22:01,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:22:01,498 INFO L85 PathProgramCache]: Analyzing trace with hash 311161802, now seen corresponding path program 21 times [2023-02-18 04:22:01,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:22:01,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167811557] [2023-02-18 04:22:01,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:22:01,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:22:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:02,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:22:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:03,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:03,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:04,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:04,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:05,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:05,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:06,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:06,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:06,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:07,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:07,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:07,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:08,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:08,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:08,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:08,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:08,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:09,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:09,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:09,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:09,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:09,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:10,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:10,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:10,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:10,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:10,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:10,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:10,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:10,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:10,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:10,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:10,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:10,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:10,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:10,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:11,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:11,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:11,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:11,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:11,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:11,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:11,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:11,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:11,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:11,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:11,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:11,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 2542 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-02-18 04:22:11,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:22:11,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167811557] [2023-02-18 04:22:11,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167811557] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:22:11,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895859344] [2023-02-18 04:22:11,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 04:22:11,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:22:11,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:22:11,288 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) [2023-02-18 04:22:11,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-18 04:22:26,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2023-02-18 04:22:26,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:22:26,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 86 conjunts are in the unsatisfiable core [2023-02-18 04:22:26,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:22:26,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 2542 refuted. 0 times theorem prover too weak. 3362 trivial. 0 not checked. [2023-02-18 04:22:26,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:22:40,297 INFO L134 CoverageAnalysis]: Checked inductivity of 5904 backedges. 0 proven. 5043 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2023-02-18 04:22:40,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895859344] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:22:40,297 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:22:40,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 87] total 92 [2023-02-18 04:22:40,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556404425] [2023-02-18 04:22:40,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:22:40,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2023-02-18 04:22:40,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:22:40,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2023-02-18 04:22:40,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2159, Invalid=6213, Unknown=0, NotChecked=0, Total=8372 [2023-02-18 04:22:40,301 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) [2023-02-18 04:22:41,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:22:41,027 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2023-02-18 04:22:41,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-02-18 04:22:41,032 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 [2023-02-18 04:22:41,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:22:41,034 INFO L225 Difference]: With dead ends: 160 [2023-02-18 04:22:41,034 INFO L226 Difference]: Without dead ends: 154 [2023-02-18 04:22:41,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 547 SyntacticMatches, 84 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8419 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=6119, Invalid=12241, Unknown=0, NotChecked=0, Total=18360 [2023-02-18 04:22:41,036 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 [2023-02-18 04:22:41,036 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] [2023-02-18 04:22:41,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-02-18 04:22:41,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2023-02-18 04:22:41,041 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) [2023-02-18 04:22:41,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 160 transitions. [2023-02-18 04:22:41,042 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 160 transitions. Word has length 297 [2023-02-18 04:22:41,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:22:41,042 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 160 transitions. [2023-02-18 04:22:41,042 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) [2023-02-18 04:22:41,043 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 160 transitions. [2023-02-18 04:22:41,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-02-18 04:22:41,044 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:22:41,044 INFO L195 NwaCegarLoop]: trace histogram [44, 44, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:22:41,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-02-18 04:22:41,259 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 [2023-02-18 04:22:41,259 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:22:41,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:22:41,259 INFO L85 PathProgramCache]: Analyzing trace with hash 598712524, now seen corresponding path program 22 times [2023-02-18 04:22:41,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:22:41,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007084859] [2023-02-18 04:22:41,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:22:41,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:22:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:42,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:22:42,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:42,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:43,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:44,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:44,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:44,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:44,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:45,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:45,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:46,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:46,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:46,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:46,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:47,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:47,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:47,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:48,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:48,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:48,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:48,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:48,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:49,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:49,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:49,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:49,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:49,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:50,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:50,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:50,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:50,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:50,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:50,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:50,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:50,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:50,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:51,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:51,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:51,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:51,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:51,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:51,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:51,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:51,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:51,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:51,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:51,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:51,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:51,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:22:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:22:51,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2023-02-18 04:22:51,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:22:51,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007084859] [2023-02-18 04:22:51,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007084859] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:22:51,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745579712] [2023-02-18 04:22:51,570 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 04:22:51,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:22:51,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:22:51,572 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) [2023-02-18 04:22:51,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-02-18 04:23:09,807 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 04:23:09,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:23:09,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 90 conjunts are in the unsatisfiable core [2023-02-18 04:23:09,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:23:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 2795 refuted. 0 times theorem prover too weak. 3698 trivial. 0 not checked. [2023-02-18 04:23:09,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:23:25,845 INFO L134 CoverageAnalysis]: Checked inductivity of 6493 backedges. 0 proven. 5547 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-02-18 04:23:25,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745579712] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:23:25,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:23:25,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 91] total 96 [2023-02-18 04:23:25,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544761752] [2023-02-18 04:23:25,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:23:25,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-02-18 04:23:25,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:23:25,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-02-18 04:23:25,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2349, Invalid=6771, Unknown=0, NotChecked=0, Total=9120 [2023-02-18 04:23:25,851 INFO L87 Difference]: Start difference. First operand 152 states and 160 transitions. Second operand has 96 states, 96 states have (on average 2.4583333333333335) internal successors, (236), 96 states have internal predecessors, (236), 46 states have call successors, (46), 1 states have call predecessors, (46), 46 states have return successors, (131), 46 states have call predecessors, (131), 46 states have call successors, (131) [2023-02-18 04:23:26,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:23:26,701 INFO L93 Difference]: Finished difference Result 166 states and 177 transitions. [2023-02-18 04:23:26,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-02-18 04:23:26,701 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.4583333333333335) internal successors, (236), 96 states have internal predecessors, (236), 46 states have call successors, (46), 1 states have call predecessors, (46), 46 states have return successors, (131), 46 states have call predecessors, (131), 46 states have call successors, (131) Word has length 311 [2023-02-18 04:23:26,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:23:26,702 INFO L225 Difference]: With dead ends: 166 [2023-02-18 04:23:26,702 INFO L226 Difference]: Without dead ends: 160 [2023-02-18 04:23:26,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 573 SyntacticMatches, 88 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9216 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=6673, Invalid=13349, Unknown=0, NotChecked=0, Total=20022 [2023-02-18 04:23:26,705 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1453 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 769 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 769 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 04:23:26,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 358 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [769 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 04:23:26,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-02-18 04:23:26,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2023-02-18 04:23:26,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 107 states have (on average 1.0467289719626167) internal successors, (112), 107 states have internal predecessors, (112), 4 states have call successors, (4), 3 states have call predecessors, (4), 46 states have return successors, (50), 47 states have call predecessors, (50), 4 states have call successors, (50) [2023-02-18 04:23:26,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 166 transitions. [2023-02-18 04:23:26,709 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 166 transitions. Word has length 311 [2023-02-18 04:23:26,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:23:26,709 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 166 transitions. [2023-02-18 04:23:26,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.4583333333333335) internal successors, (236), 96 states have internal predecessors, (236), 46 states have call successors, (46), 1 states have call predecessors, (46), 46 states have return successors, (131), 46 states have call predecessors, (131), 46 states have call successors, (131) [2023-02-18 04:23:26,710 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 166 transitions. [2023-02-18 04:23:26,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2023-02-18 04:23:26,711 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:23:26,711 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:23:26,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-02-18 04:23:26,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:23:26,925 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:23:26,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:23:26,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1929514802, now seen corresponding path program 23 times [2023-02-18 04:23:26,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:23:26,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73063461] [2023-02-18 04:23:26,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:23:26,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:23:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:23:28,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-18 04:23:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:23:28,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:23:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:23:29,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:23:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:23:29,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:23:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:23:30,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:23:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:23:30,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:23:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:23:31,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:23:31,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:23:32,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:23:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:23:32,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:23:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat